/******************************************************************************* * Copyright (c) 2000, 2013 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.widgets; import org.eclipse.swt.*; import org.eclipse.swt.events.*; import org.eclipse.swt.graphics.*; import org.eclipse.swt.internal.win32.*; /** * Instances of this class are selectable user interface * objects that allow the user to enter and modify text. * Text controls can be either single or multi-line. * When a text control is created with a border, the * operating system includes a platform specific inset * around the contents of the control. When created * without a border, an effort is made to remove the * inset such that the preferred size of the control * is the same size as the contents. *

*

*
Styles:
*
CENTER, ICON_CANCEL, ICON_SEARCH, LEFT, MULTI, PASSWORD, SEARCH, SINGLE, RIGHT, READ_ONLY, WRAP
*
Events:
*
DefaultSelection, Modify, Verify, OrientationChange
*
*

* Note: Only one of the styles MULTI and SINGLE may be specified, * and only one of the styles LEFT, CENTER, and RIGHT may be specified. *

*

* Note: The styles ICON_CANCEL and ICON_SEARCH are hints used in combination with SEARCH. * When the platform supports the hint, the text control shows these icons. When an icon * is selected, a default selection event is sent with the detail field set to one of * ICON_CANCEL or ICON_SEARCH. Normally, application code does not need to check the * detail. In the case of ICON_CANCEL, the text is cleared before the default selection * event is sent causing the application to search for an empty string. *

*

* IMPORTANT: This class is not intended to be subclassed. *

* * @see Text snippets * @see SWT Example: ControlExample * @see Sample code and further information * @noextend This class is not intended to be subclassed by clients. */ public class Text extends Scrollable { int tabs, oldStart, oldEnd; boolean doubleClick, ignoreModify, ignoreVerify, ignoreCharacter, allowPasswordChar; String message; int[] segments; int clearSegmentsCount = 0; static final char LTR_MARK = '\u200e'; static final char RTL_MARK = '\u200f'; /** * The maximum number of characters that can be entered * into a text widget. *

* Note that this value is platform dependent, based upon * the native widget implementation. *

*/ public static final int LIMIT; /** * The delimiter used by multi-line text widgets. When text * is queried and from the widget, it will be delimited using * this delimiter. */ public static final String DELIMITER; /* * This code is intentionally commented. */ // static final char PASSWORD; /* * These values can be different on different platforms. * Therefore they are not initialized in the declaration * to stop the compiler from inlining. */ static { LIMIT = OS.IsWinNT ? 0x7FFFFFFF : 0x7FFF; DELIMITER = "\r\n"; } static final long /*int*/ EditProc; static final TCHAR EditClass = new TCHAR (0, "EDIT", true); static { WNDCLASS lpWndClass = new WNDCLASS (); OS.GetClassInfo (0, EditClass, lpWndClass); EditProc = lpWndClass.lpfnWndProc; /* * This code is intentionally commented. */ // long /*int*/ hwndText = OS.CreateWindowEx (0, // EditClass, // null, // OS.WS_OVERLAPPED | OS.ES_PASSWORD, // 0, 0, 0, 0, // 0, // 0, // OS.GetModuleHandle (null), // null); // char echo = (char) OS.SendMessage (hwndText, OS.EM_GETPASSWORDCHAR, 0, 0); // OS.DestroyWindow (hwndText); // PASSWORD = echo != 0 ? echo : '*'; } /** * Constructs a new instance of this class given its parent * and a style value describing its behavior and appearance. *

* The style value is either one of the style constants defined in * class SWT which is applicable to instances of this * class, or must be built by bitwise OR'ing together * (that is, using the int "|" operator) two or more * of those SWT style constants. The class description * lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. *

* * @param parent a composite control which will be the parent of the new instance (cannot be null) * @param style the style of control to construct * * @exception IllegalArgumentException * @exception SWTException * * @see SWT#SINGLE * @see SWT#MULTI * @see SWT#READ_ONLY * @see SWT#WRAP * @see SWT#LEFT * @see SWT#RIGHT * @see SWT#CENTER * @see SWT#PASSWORD * @see SWT#SEARCH * @see SWT#ICON_SEARCH * @see SWT#ICON_CANCEL * @see Widget#checkSubclass * @see Widget#getStyle */ public Text (Composite parent, int style) { super (parent, checkStyle (style)); } long /*int*/ callWindowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) { if (handle == 0) return 0; boolean redraw = false; switch (msg) { case OS.WM_ERASEBKGND: { if (findImageControl () != null) return 0; break; } case OS.WM_HSCROLL: case OS.WM_VSCROLL: { redraw = findImageControl () != null && getDrawing () && OS.IsWindowVisible (handle); if (redraw) OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0); break; } case OS.WM_PAINT: { boolean doubleBuffer = findImageControl () != null; boolean drawMessage = false; if ((style & SWT.SINGLE) != 0 && message.length () > 0) { if ((!OS.IsWinCE && OS.WIN32_VERSION < OS.VERSION (6, 0)) || (style & SWT.READ_ONLY) != 0) { drawMessage = hwnd != OS.GetFocus () && OS.GetWindowTextLength (handle) == 0; } } if (doubleBuffer || drawMessage) { long /*int*/ paintDC = 0; PAINTSTRUCT ps = new PAINTSTRUCT (); paintDC = OS.BeginPaint (handle, ps); int width = ps.right - ps.left; int height = ps.bottom - ps.top; if (width != 0 && height != 0) { long /*int*/ hDC = paintDC, hBitmap = 0, hOldBitmap = 0; POINT lpPoint1 = null, lpPoint2 = null; if (doubleBuffer) { hDC = OS.CreateCompatibleDC (paintDC); lpPoint1 = new POINT (); lpPoint2 = new POINT (); OS.SetWindowOrgEx (hDC, ps.left, ps.top, lpPoint1); OS.SetBrushOrgEx (hDC, ps.left, ps.top, lpPoint2); hBitmap = OS.CreateCompatibleBitmap (paintDC, width, height); hOldBitmap = OS.SelectObject (hDC, hBitmap); RECT rect = new RECT (); OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom); drawBackground (hDC, rect); } OS.CallWindowProc (EditProc, hwnd, OS.WM_PAINT, hDC, lParam); /* * Bug in XP. Windows does not draw the cue message on XP when * East Asian language pack is installed. The fix is to draw * the cue messages ourselves. * Note: This bug is fixed on Vista. */ if (drawMessage) { RECT rect = new RECT(); OS.GetClientRect(handle, rect); long /*int*/ margins = OS.SendMessage (handle, OS.EM_GETMARGINS, 0, 0); rect.left += OS.LOWORD (margins); rect.right -= OS.HIWORD (margins); if ((style & SWT.BORDER) != 0) { rect.left++; rect.top++; rect.right--; rect.bottom--; } TCHAR buffer = new TCHAR (getCodePage (), message, false); int uFormat = OS.DT_EDITCONTROL; boolean rtl = (style & SWT.RIGHT_TO_LEFT) != 0; if (rtl) uFormat |= OS.DT_RTLREADING; int alignment = style & (SWT.LEFT | SWT.CENTER | SWT.RIGHT); switch (alignment) { case SWT.LEFT: uFormat |= (rtl ? OS.DT_RIGHT : OS.DT_LEFT); break; case SWT.CENTER: uFormat |= OS.DT_CENTER; case SWT.RIGHT: uFormat |= (rtl ? OS.DT_LEFT : OS.DT_RIGHT); break; } long /*int*/ hFont = OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0); long /*int*/ hOldFont = OS.SelectObject (hDC, hFont); OS.SetTextColor (hDC, OS.GetSysColor (OS.COLOR_GRAYTEXT)); OS.SetBkMode (hDC, OS.TRANSPARENT); OS.DrawText (hDC, buffer, buffer.length (), rect, uFormat); OS.SelectObject (hDC, hOldFont); } if (doubleBuffer) { OS.SetWindowOrgEx (hDC, lpPoint1.x, lpPoint1.y, null); OS.SetBrushOrgEx (hDC, lpPoint2.x, lpPoint2.y, null); OS.BitBlt (paintDC, ps.left, ps.top, width, height, hDC, 0, 0, OS.SRCCOPY); OS.SelectObject (hDC, hOldBitmap); OS.DeleteObject (hBitmap); OS.DeleteObject (hDC); } } OS.EndPaint (handle, ps); return 0; } break; } } long /*int*/ code = OS.CallWindowProc (EditProc, hwnd, msg, wParam, lParam); switch (msg) { case OS.WM_HSCROLL: case OS.WM_VSCROLL: { if (redraw) { OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0); OS.InvalidateRect (handle, null, true); } break; } } return code; } void createHandle () { super.createHandle (); OS.SendMessage (handle, OS.EM_LIMITTEXT, 0, 0); if ((style & SWT.READ_ONLY) != 0) { if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { state |= THEME_BACKGROUND; } } } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is modified, by sending * it one of the messages defined in the ModifyListener * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @see ModifyListener * @see #removeModifyListener */ public void addModifyListener (ModifyListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (SWT.Modify, typedListener); } /** * Adds a segment listener. *

* A SegmentEvent is sent whenever text content is being modified or * a segment listener is added or removed. You can * customize the appearance of text by indicating certain characters to be inserted * at certain text offsets. This may be used for bidi purposes, e.g. when * adjacent segments of right-to-left text should not be reordered relative to * each other. * E.g., multiple Java string literals in a right-to-left language * should generally remain in logical order to each other, that is, the * way they are stored. *

*

* Warning: This API is currently only implemented on Windows and GTK. * SegmentEvents won't be sent on Cocoa. *

* * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @see SegmentEvent * @see SegmentListener * @see #removeSegmentListener * * @since 3.8 */ public void addSegmentListener (SegmentListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); addListener (SWT.Segments, new TypedListener (listener)); clearSegments (true); applySegments (); } /** * Adds the listener to the collection of listeners who will * be notified when the control is selected by the user, by sending * it one of the messages defined in the SelectionListener * interface. *

* widgetSelected is not called for texts. * widgetDefaultSelected is typically called when ENTER is pressed in a single-line text, * or when ENTER is pressed in a search text. If the receiver has the SWT.SEARCH | SWT.ICON_CANCEL style * and the user cancels the search, the event object detail field contains the value SWT.ICON_CANCEL. * Likewise, if the receiver has the SWT.ICON_SEARCH style and the icon search is selected, the * event object detail field contains the value SWT.ICON_SEARCH. *

* * @param listener the listener which should be notified when the control is selected by the user * * @exception IllegalArgumentException * @exception SWTException * * @see SelectionListener * @see #removeSelectionListener * @see SelectionEvent */ public void addSelectionListener (SelectionListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (SWT.Selection,typedListener); addListener (SWT.DefaultSelection,typedListener); } /** * Adds the listener to the collection of listeners who will * be notified when the receiver's text is verified, by sending * it one of the messages defined in the VerifyListener * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @see VerifyListener * @see #removeVerifyListener */ public void addVerifyListener (VerifyListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (SWT.Verify, typedListener); } /** * Appends a string. *

* The new text is appended to the text at * the end of the widget. *

* * @param string the string to be appended * * @exception IllegalArgumentException * @exception SWTException */ public void append (String string) { checkWidget (); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); string = Display.withCrLf (string); int length = OS.GetWindowTextLength (handle); if (hooks (SWT.Verify) || filters (SWT.Verify)) { string = verifyText (string, length, length, null); if (string == null) return; } OS.SendMessage (handle, OS.EM_SETSEL, length, length); clearSegments (true); TCHAR buffer = new TCHAR (getCodePage (), string, true); /* * Feature in Windows. When an edit control with ES_MULTILINE * style that does not have the WS_VSCROLL style is full (i.e. * there is no space at the end to draw any more characters), * EM_REPLACESEL sends a WM_CHAR with a backspace character * to remove any further text that is added. This is an * implementation detail of the edit control that is unexpected * and can cause endless recursion when EM_REPLACESEL is sent * from a WM_CHAR handler. The fix is to ignore calling the * handler from WM_CHAR. */ ignoreCharacter = true; OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer); ignoreCharacter = false; OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); applySegments (); } void applySegments () { if (--clearSegmentsCount != 0) return; if (!hooks (SWT.Segments) && !filters (SWT.Segments)) return; int length = OS.GetWindowTextLength (handle); int cp = getCodePage (); TCHAR buffer = new TCHAR (cp, length + 1); if (length > 0) OS.GetWindowText (handle, buffer, length + 1); String string = buffer.toString (0, length); /* Get segments text */ Event event = new Event (); event.text = string; event.segments = segments; sendEvent (SWT.Segments, event); segments = event.segments; if (segments == null) return; int nSegments = segments.length; if (nSegments == 0) return; length = string == null ? 0 : string.length (); for (int i = 1; i < nSegments; i++) { if (event.segments [i] < event.segments [i - 1] || event.segments [i] > length) { error (SWT.ERROR_INVALID_ARGUMENT); } } char [] segmentsChars = event.segmentsChars; char [] segmentsCharsCrLf = segmentsChars == null ? null : Display.withCrLf(segmentsChars); if (segmentsChars != segmentsCharsCrLf) { int [] segmentsCrLf = new int [nSegments + Math.min (nSegments, segmentsCharsCrLf.length - segmentsChars.length)]; for (int i = 0, c = 0; i < segmentsChars.length && i < nSegments; i++) { if (segmentsChars [i] == '\n' && segmentsCharsCrLf [i + c] == '\r') { segmentsCrLf [i + c++] = segments [i]; } segmentsCrLf [i + c] = segments [i]; } segments = segmentsCrLf; nSegments = segments.length; segmentsChars = segmentsCharsCrLf; } int/*64*/ limit = (int/*64*/)OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7fffffff; OS.SendMessage (handle, OS.EM_SETLIMITTEXT, limit + Math.min (nSegments, LIMIT - limit), 0); length += nSegments; char [] newChars = new char [length + 1]; int charCount = 0, segmentCount = 0; char defaultSeparator = getOrientation () == SWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; while (charCount < length) { if (segmentCount < nSegments && charCount - segmentCount == segments [segmentCount]) { char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars [segmentCount] : defaultSeparator; newChars [charCount++] = separator; segmentCount++; } else if (string != null) { newChars [charCount] = string.charAt (charCount++ - segmentCount); } } while (segmentCount < nSegments) { segments [segmentCount] = charCount - segmentCount; char separator = segmentsChars != null && segmentsChars.length > segmentCount ? segmentsChars [segmentCount] : defaultSeparator; newChars [charCount++] = separator; segmentCount++; } /* Get the current selection */ int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (!OS.IsUnicode && OS.IsDBLocale) { start [0] = mbcsToWcsPos (start [0]); end [0] = mbcsToWcsPos (end [0]); } boolean oldIgnoreCharacter = ignoreCharacter, oldIgnoreModify = ignoreModify, oldIgnoreVerify = ignoreVerify; ignoreCharacter = ignoreModify = ignoreVerify = true; /* * SetWindowText empties the undo buffer and disables undo menu item. * Sending OS.EM_REPLACESEL message instead. */ newChars [length] = 0; buffer = new TCHAR (cp, newChars, false); OS.SendMessage (handle, OS.EM_SETSEL, 0, -1); long /*int*/ undo = OS.SendMessage (handle, OS.EM_CANUNDO, 0, 0); OS.SendMessage (handle, OS.EM_REPLACESEL, undo, buffer); /* Restore selection */ start [0] = translateOffset (start [0]); end [0] = translateOffset (end [0]); if (!OS.IsUnicode && OS.IsDBLocale) { start [0] = wcsToMbcsPos (start [0]); end [0] = wcsToMbcsPos (end [0]); } OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); ignoreCharacter = oldIgnoreCharacter; ignoreModify = oldIgnoreModify; ignoreVerify = oldIgnoreVerify; } static int checkStyle (int style) { if ((style & SWT.SEARCH) != 0) { style |= SWT.SINGLE | SWT.BORDER; style &= ~SWT.PASSWORD; /* * NOTE: ICON_CANCEL has the same value as H_SCROLL and * ICON_SEARCH has the same value as V_SCROLL so they are * cleared because SWT.SINGLE is set. */ } if ((style & SWT.SINGLE) != 0 && (style & SWT.MULTI) != 0) { style &= ~SWT.MULTI; } style = checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); if ((style & SWT.SINGLE) != 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP); if ((style & SWT.WRAP) != 0) { style |= SWT.MULTI; style &= ~SWT.H_SCROLL; } if ((style & SWT.MULTI) != 0) style &= ~SWT.PASSWORD; if ((style & (SWT.SINGLE | SWT.MULTI)) != 0) return style; if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) return style | SWT.MULTI; return style | SWT.SINGLE; } void clearSegments (boolean applyText) { if (clearSegmentsCount++ != 0) return; if (segments == null) return; int nSegments = segments.length; if (nSegments == 0) return; int/*64*/ limit = (int/*64*/)OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7fffffff; if (limit < LIMIT) { OS.SendMessage (handle, OS.EM_SETLIMITTEXT, Math.max (1, limit - nSegments), 0); } if (!applyText) { segments = null; return; } boolean oldIgnoreCharacter = ignoreCharacter, oldIgnoreModify = ignoreModify, oldIgnoreVerify = ignoreVerify; ignoreCharacter = ignoreModify = ignoreVerify = true; int length = OS.GetWindowTextLength (handle); int cp = getCodePage (); TCHAR buffer = new TCHAR (cp, length + 1); if (length > 0) OS.GetWindowText (handle, buffer, length + 1); buffer = deprocessText (buffer, 0, -1, true); /* Get the current selection */ int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (!OS.IsUnicode && OS.IsDBLocale) { start [0] = mbcsToWcsPos (start[0]); end [0]= mbcsToWcsPos (end [0]); } start [0] = untranslateOffset (start [0]); end [0] = untranslateOffset (end[0]); segments = null; /* * SetWindowText empties the undo buffer and disables undo in the context * menu. Sending OS.EM_REPLACESEL message instead. */ OS.SendMessage (handle, OS.EM_SETSEL, 0, -1); long /*int*/ undo = OS.SendMessage (handle, OS.EM_CANUNDO, 0, 0); OS.SendMessage (handle, OS.EM_REPLACESEL, undo, buffer); /* Restore selection */ if (!OS.IsUnicode && OS.IsDBLocale) { start [0] = wcsToMbcsPos (start [0]); end [0] = wcsToMbcsPos (end [0]); } OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); ignoreCharacter = oldIgnoreCharacter; ignoreModify = oldIgnoreModify; ignoreVerify = oldIgnoreVerify; } /** * Clears the selection. * * @exception SWTException */ public void clearSelection () { checkWidget (); if (OS.IsWinCE) { /* * Bug in WinCE. Calling EM_SETSEL with -1 and 0 is equivalent * to calling EM_SETSEL with 0 and -1. It causes the entire * text to be selected instead of clearing the selection. The * fix is to set the start of the selection to the end of the * current selection. */ int [] end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, (int []) null, end); OS.SendMessage (handle, OS.EM_SETSEL, end [0], end [0]); } else { OS.SendMessage (handle, OS.EM_SETSEL, -1, 0); } } public Point computeSize (int wHint, int hHint, boolean changed) { checkWidget (); int height = 0, width = 0; if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) { long /*int*/ newFont, oldFont = 0; long /*int*/ hDC = OS.GetDC (handle); newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); OS.GetTextMetrics (hDC, tm); int count = (style & SWT.SINGLE) != 0 ? 1 : (int)/*64*/OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0); height = count * tm.tmHeight; RECT rect = new RECT (); int flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_NOPREFIX; boolean wrap = (style & SWT.MULTI) != 0 && (style & SWT.WRAP) != 0; if (wrap && wHint != SWT.DEFAULT) { flags |= OS.DT_WORDBREAK; rect.right = wHint; } int length = OS.GetWindowTextLength (handle); if (length != 0) { TCHAR buffer = new TCHAR (getCodePage (), length + 1); OS.GetWindowText (handle, buffer, length + 1); OS.DrawText (hDC, buffer, length, rect, flags); width = rect.right - rect.left; } if (wrap && hHint == SWT.DEFAULT) { int newHeight = rect.bottom - rect.top; if (newHeight != 0) height = newHeight; } if ((style & SWT.SINGLE) != 0 && message.length () > 0) { OS.SetRect (rect, 0, 0, 0, 0); TCHAR buffer = new TCHAR (getCodePage (), message, false); OS.DrawText (hDC, buffer, buffer.length (), rect, flags); width = Math.max (width, rect.right - rect.left); } if (newFont != 0) OS.SelectObject (hDC, oldFont); OS.ReleaseDC (handle, hDC); } if (width == 0) width = DEFAULT_WIDTH; if (height == 0) height = DEFAULT_HEIGHT; if (wHint != SWT.DEFAULT) width = wHint; if (hHint != SWT.DEFAULT) height = hHint; Rectangle trim = computeTrim (0, 0, width, height); return new Point (trim.width, trim.height); } public Rectangle computeTrim (int x, int y, int width, int height) { checkWidget (); Rectangle rect = super.computeTrim (x, y, width, height); /* * The preferred height of a single-line text widget * has been hand-crafted to be the same height as * the single-line text widget in an editable combo * box. */ long /*int*/ margins = OS.SendMessage(handle, OS.EM_GETMARGINS, 0, 0); rect.x -= OS.LOWORD (margins); rect.width += OS.LOWORD (margins) + OS.HIWORD (margins); if ((style & SWT.H_SCROLL) != 0) rect.width++; if ((style & SWT.BORDER) != 0) { rect.x -= 1; rect.y -= 1; rect.width += 2; rect.height += 2; } return rect; } /** * Copies the selected text. *

* The current selection is copied to the clipboard. *

* * @exception SWTException */ public void copy () { checkWidget (); OS.SendMessage (handle, OS.WM_COPY, 0, 0); } void createWidget () { super.createWidget (); message = ""; doubleClick = true; setTabStops (tabs = 8); fixAlignment (); } /** * Cuts the selected text. *

* The current selection is first copied to the * clipboard and then deleted from the widget. *

* * @exception SWTException */ public void cut () { checkWidget (); if ((style & SWT.READ_ONLY) != 0) return; OS.SendMessage (handle, OS.WM_CUT, 0, 0); } int defaultBackground () { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); return OS.GetSysColor ((bits & OS.ES_READONLY) != 0 ? OS.COLOR_3DFACE : OS.COLOR_WINDOW); } TCHAR deprocessText (TCHAR text, int start, int end, boolean terminate) { if (text == null) return null; int length = text.length (); char [] chars; if (start < 0) start = 0; if (OS.IsUnicode) { chars = text.chars; if (text.chars [length - 1] == 0) length--; } else { chars = new char [length]; length = OS.MultiByteToWideChar (getCodePage (), OS.MB_PRECOMPOSED, text.bytes, length, chars, length); } if (end == -1) end = length; if (segments != null && end > segments [0]) { int nSegments = segments.length; if (nSegments > 0 && start <= segments [nSegments - 1]) { int nLeadSegments = 0; while (start - nLeadSegments > segments [nLeadSegments]) nLeadSegments++; int segmentCount = nLeadSegments; for (int i = start; i < end; i++) { if (segmentCount < nSegments && i - segmentCount == segments [segmentCount]) { ++segmentCount; } else { chars [i - segmentCount + nLeadSegments] = chars [i]; } } length = end - start - segmentCount + nLeadSegments; } } if (start != 0 || end != length) { char [] newChars = new char [length]; System.arraycopy(chars, start, newChars, 0, length); return new TCHAR (getCodePage (), newChars, terminate); } return text; } boolean dragDetect (long /*int*/ hwnd, int x, int y, boolean filter, boolean [] detect, boolean [] consume) { if (filter) { int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (start [0] != end [0]) { long /*int*/ lParam = OS.MAKELPARAM (x, y); int position = OS.LOWORD (OS.SendMessage (handle, OS.EM_CHARFROMPOS, 0, lParam)); if (start [0] <= position && position < end [0]) { if (super.dragDetect (hwnd, x, y, filter, detect, consume)) { if (consume != null) consume [0] = true; return true; } } } return false; } return super.dragDetect (hwnd, x, y, filter, detect, consume); } void fixAlignment () { /* * Feature in Windows. When the edit control is not * mirrored, it uses WS_EX_RIGHT, WS_EX_RTLREADING and * WS_EX_LEFTSCROLLBAR to give the control a right to * left appearance. This causes the control to be lead * aligned no matter what alignment was specified by * the programmer. For example, setting ES_RIGHT and * WS_EX_LAYOUTRTL should cause the contents of the * control to be left (trail) aligned in a mirrored world. * When the orientation is changed by the user or * specified by the programmer, WS_EX_RIGHT conflicts * with the mirrored alignment. The fix is to clear * or set WS_EX_RIGHT to achieve the correct alignment * according to the orientation and mirroring. */ if ((style & SWT.MIRRORED) != 0) return; int bits1 = OS.GetWindowLong (handle, OS.GWL_EXSTYLE); int bits2 = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((style & SWT.LEFT_TO_RIGHT) != 0) { /* * Bug in Windows 98. When the edit control is created * with the style ES_RIGHT it automatically sets the * WS_EX_LEFTSCROLLBAR bit. The fix is to clear the * bit when the orientation of the control is left * to right. */ bits1 &= ~OS.WS_EX_LEFTSCROLLBAR; if ((style & SWT.RIGHT) != 0) { bits1 |= OS.WS_EX_RIGHT; bits2 |= OS.ES_RIGHT; } if ((style & SWT.LEFT) != 0) { bits1 &= ~OS.WS_EX_RIGHT; bits2 &= ~OS.ES_RIGHT; } } else { if ((style & SWT.RIGHT) != 0) { bits1 &= ~OS.WS_EX_RIGHT; bits2 &= ~OS.ES_RIGHT; } if ((style & SWT.LEFT) != 0) { bits1 |= OS.WS_EX_RIGHT; bits2 |= OS.ES_RIGHT; } } if ((style & SWT.CENTER) != 0) { bits2 |= OS.ES_CENTER; } OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits1); OS.SetWindowLong (handle, OS.GWL_STYLE, bits2); } public int getBorderWidth () { checkWidget (); /* * Feature in Windows 2000 and XP. Despite the fact that WS_BORDER * is set when the edit control is created, the style bit is cleared. * The fix is to avoid the check for WS_BORDER and use the SWT widget * style bits instead. */ // if ((style & SWT.BORDER) != 0 && (style & SWT.FLAT) != 0) { // return OS.GetSystemMetrics (OS.SM_CXBORDER); // } return super.getBorderWidth (); } /** * Returns the line number of the caret. *

* The line number of the caret is returned. *

* * @return the line number * * @exception SWTException */ public int getCaretLineNumber () { checkWidget (); return (int)/*64*/OS.SendMessage (handle, OS.EM_LINEFROMCHAR, -1, 0); } /** * Returns a point describing the location of the caret relative * to the receiver. * * @return a point, the location of the caret * * @exception SWTException */ public Point getCaretLocation () { checkWidget (); /* * Bug in Windows. For some reason, Windows is unable * to return the pixel coordinates of the last character * in the widget. The fix is to temporarily insert a * space, query the coordinates and delete the space. * The selection is always an i-beam in this case because * this is the only time the start of the selection can * be equal to the last character position in the widget. * If EM_POSFROMCHAR fails for any other reason, return * pixel coordinates (0,0). */ int position = translateOffset (getCaretPosition ()); long /*int*/ caretPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, position, 0); if (caretPos == -1) { caretPos = 0; if (position >= OS.GetWindowTextLength (handle)) { int cp = getCodePage (); int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); OS.SendMessage (handle, OS.EM_SETSEL, position, position); /* * Feature in Windows. When an edit control with ES_MULTILINE * style that does not have the WS_VSCROLL style is full (i.e. * there is no space at the end to draw any more characters), * EM_REPLACESEL sends a WM_CHAR with a backspace character * to remove any further text that is added. This is an * implementation detail of the edit control that is unexpected * and can cause endless recursion when EM_REPLACESEL is sent * from a WM_CHAR handler. The fix is to ignore calling the * handler from WM_CHAR. */ ignoreCharacter = ignoreModify = true; OS.SendMessage (handle, OS.EM_REPLACESEL, 0, new TCHAR (cp, " ", true)); caretPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, position, 0); OS.SendMessage (handle, OS.EM_SETSEL, position, position + 1); OS.SendMessage (handle, OS.EM_REPLACESEL, 0, new TCHAR (cp, "", true)); ignoreCharacter = ignoreModify = false; OS.SendMessage (handle, OS.EM_SETSEL, start [0], start [0]); OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); } } return new Point (OS.GET_X_LPARAM (caretPos), OS.GET_Y_LPARAM (caretPos)); } /** * Returns the character position of the caret. *

* Indexing is zero based. *

* * @return the position of the caret * * @exception SWTException */ public int getCaretPosition () { checkWidget (); int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); /* * In Windows, there is no API to get the position of the caret * when the selection is not an i-beam. The best that can be done * is to query the pixel position of the current caret and compare * it to the pixel position of the start and end of the selection. * * NOTE: This does not work when the i-beam belongs to another * control. In this case, guess that the i-beam is at the start * of the selection. */ int caret = start [0]; if (start [0] != end [0]) { int startLine = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEFROMCHAR, start [0], 0); int endLine = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEFROMCHAR, end [0], 0); if (startLine == endLine) { if (!OS.IsWinCE) { int idThread = OS.GetWindowThreadProcessId (handle, null); GUITHREADINFO lpgui = new GUITHREADINFO (); lpgui.cbSize = GUITHREADINFO.sizeof; if (OS.GetGUIThreadInfo (idThread, lpgui)) { if (lpgui.hwndCaret == handle || lpgui.hwndCaret == 0) { POINT ptCurrentPos = new POINT (); if (OS.GetCaretPos (ptCurrentPos)) { long /*int*/ endPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, end [0], 0); if (endPos == -1) { long /*int*/ startPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, start [0], 0); int startX = OS.GET_X_LPARAM (startPos); if (ptCurrentPos.x > startX) caret = end [0]; } else { int endX = OS.GET_X_LPARAM (endPos); if (ptCurrentPos.x >= endX) caret = end [0]; } } } } } } else { int caretPos = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEINDEX, -1, 0); int caretLine = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEFROMCHAR, caretPos, 0); if (caretLine == endLine) caret = end [0]; } } if (!OS.IsUnicode && OS.IsDBLocale) caret = mbcsToWcsPos (caret); return untranslateOffset (caret); } /** * Returns the number of characters. * * @return number of characters in the widget * * @exception SWTException */ public int getCharCount () { checkWidget (); int length = OS.GetWindowTextLength (handle); if (!OS.IsUnicode && OS.IsDBLocale) length = mbcsToWcsPos (length); return untranslateOffset (length); } /** * Returns the double click enabled flag. *

* The double click flag enables or disables the * default action of the text widget when the user * double clicks. *

* * @return whether or not double click is enabled * * @exception SWTException */ public boolean getDoubleClickEnabled () { checkWidget (); return doubleClick; } /** * Returns the echo character. *

* The echo character is the character that is * displayed when the user enters text or the * text is changed by the programmer. *

* * @return the echo character * * @exception SWTException * * @see #setEchoChar */ public char getEchoChar () { checkWidget (); char echo = (char) OS.SendMessage (handle, OS.EM_GETPASSWORDCHAR, 0, 0); if (echo != 0 && (echo = Display.mbcsToWcs (echo, getCodePage ())) == 0) echo = '*'; return echo; } /** * Returns the editable state. * * @return whether or not the receiver is editable * * @exception SWTException */ public boolean getEditable () { checkWidget (); int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); return (bits & OS.ES_READONLY) == 0; } /** * Returns the number of lines. * * @return the number of lines in the widget * * @exception SWTException */ public int getLineCount () { checkWidget (); return (int)/*64*/OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0); } /** * Returns the line delimiter. * * @return a string that is the line delimiter * * @exception SWTException * * @see #DELIMITER */ public String getLineDelimiter () { checkWidget (); return DELIMITER; } /** * Returns the height of a line. * * @return the height of a row of text * * @exception SWTException */ public int getLineHeight () { checkWidget (); long /*int*/ newFont, oldFont = 0; long /*int*/ hDC = OS.GetDC (handle); newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); OS.GetTextMetrics (hDC, tm); if (newFont != 0) OS.SelectObject (hDC, oldFont); OS.ReleaseDC (handle, hDC); return tm.tmHeight; } /** * Returns the orientation of the receiver, which will be one of the * constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT. * * @return the orientation style * * @exception SWTException * * @since 2.1.2 */ public int getOrientation () { return super.getOrientation (); } /** * Returns the widget message. The message text is displayed * as a hint for the user, indicating the purpose of the field. *

* Typically this is used in conjunction with SWT.SEARCH. *

* * @return the widget message * * @exception SWTException * * @since 3.3 */ public String getMessage () { checkWidget (); return message; } /** * Returns the character position at the given point in the receiver * or -1 if no such position exists. The point is in the coordinate * system of the receiver. *

* Indexing is zero based. *

* * @return the position of the caret * * @exception SWTException * * @since 3.3 */ //TODO - Javadoc /*public*/ int getPosition (Point point) { checkWidget(); if (point == null) error (SWT.ERROR_NULL_ARGUMENT); long /*int*/ lParam = OS.MAKELPARAM (point.x, point.y); int position = OS.LOWORD (OS.SendMessage (handle, OS.EM_CHARFROMPOS, 0, lParam)); if (!OS.IsUnicode && OS.IsDBLocale) position = mbcsToWcsPos (position); return untranslateOffset (position); } /** * Returns a Point whose x coordinate is the * character position representing the start of the selected * text, and whose y coordinate is the character position * representing the end of the selection. An "empty" selection * is indicated by the x and y coordinates having the same value. *

* Indexing is zero based. The range of a selection is from * 0..N where N is the number of characters in the widget. *

* * @return a point representing the selection start and end * * @exception SWTException */ public Point getSelection () { checkWidget (); int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (!OS.IsUnicode && OS.IsDBLocale) { start [0] = mbcsToWcsPos (start [0]); end [0] = mbcsToWcsPos (end [0]); } return new Point (untranslateOffset (start [0]), untranslateOffset (end [0])); } /** * Returns the number of selected characters. * * @return the number of selected characters. * * @exception SWTException */ public int getSelectionCount () { checkWidget (); Point selection = getSelection (); return selection.y - selection.x; } /** * Gets the selected text, or an empty string if there is no current selection. * * @return the selected text * * @exception SWTException */ public String getSelectionText () { checkWidget (); int length = OS.GetWindowTextLength (handle); if (length == 0) return ""; int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (start [0] == end [0]) return ""; TCHAR buffer = new TCHAR (getCodePage (), length + 1); OS.GetWindowText (handle, buffer, length + 1); if (segments != null) { buffer = deprocessText (buffer, start [0], end [0], false); return buffer.toString (); } return buffer.toString (start [0], end [0] - start [0]); } /** * Returns the number of tabs. *

* Tab stop spacing is specified in terms of the * space (' ') character. The width of a single * tab stop is the pixel width of the spaces. *

* * @return the number of tab characters * * @exception SWTException */ public int getTabs () { checkWidget (); return tabs; } int getTabWidth (int tabs) { long /*int*/ oldFont = 0; RECT rect = new RECT (); long /*int*/ hDC = OS.GetDC (handle); long /*int*/ newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX; TCHAR SPACE = new TCHAR (getCodePage (), " ", false); OS.DrawText (hDC, SPACE, SPACE.length (), rect, flags); if (newFont != 0) OS.SelectObject (hDC, oldFont); OS.ReleaseDC (handle, hDC); return (rect.right - rect.left) * tabs; } /** * Returns the widget text. *

* The text for a text widget is the characters in the widget, or * an empty string if this has never been set. *

* * @return the widget text * * @exception SWTException */ public String getText () { checkWidget (); int length = OS.GetWindowTextLength (handle); if (length == 0) return ""; TCHAR buffer = new TCHAR (getCodePage (), length + 1); OS.GetWindowText (handle, buffer, length + 1); if (segments != null) { buffer = deprocessText (buffer, 0, -1, false); return buffer.toString (); } return buffer.toString (0, length); } /** * Returns the widget's text as a character array. *

* The text for a text widget is the characters in the widget, or * a zero-length array if this has never been set. *

*

* Note: Use the API to protect the text, for example, when widget is used as * a password field. However, the text can't be protected if Segment listener * is added to the widget. *

* * @return a character array that contains the widget's text * * @exception SWTException * * @see #setTextChars(char[]) * * @since 3.7 */ public char[] getTextChars () { checkWidget (); int length = OS.GetWindowTextLength (handle); if (length == 0) return new char[0]; TCHAR buffer = new TCHAR (getCodePage (), length + 1); OS.GetWindowText (handle, buffer, length + 1); if (segments != null) buffer = deprocessText (buffer, 0, -1, false); char [] chars = new char [length]; System.arraycopy (buffer.chars, 0, chars, 0, length); for (int i = 0; i < buffer.chars.length; i++) buffer.chars [i] = '\0'; return chars; } /** * Returns a range of text. Returns an empty string if the * start of the range is greater than the end. *

* Indexing is zero based. The range of * a selection is from 0..N-1 where N is * the number of characters in the widget. *

* * @param start the start of the range * @param end the end of the range * @return the range of text * * @exception SWTException */ public String getText (int start, int end) { checkWidget (); if (!(start <= end && 0 <= end)) return ""; int length = OS.GetWindowTextLength (handle); if (!OS.IsUnicode && OS.IsDBLocale) length = mbcsToWcsPos (length); end = Math.min (end, untranslateOffset (length) - 1); if (start > end) return ""; start = Math.max (0, start); /* * NOTE: The current implementation uses substring () * which can reference a potentially large character * array. */ return getText ().substring (start, end + 1); } /** * Returns the maximum number of characters that the receiver is capable of holding. *

* If this has not been changed by setTextLimit(), * it will be the constant Text.LIMIT. *

* * @return the text limit * * @exception SWTException * * @see #LIMIT */ public int getTextLimit () { checkWidget (); int/*64*/ limit = (int)/*64*/OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF; if (segments != null && limit < LIMIT) limit = Math.max (1, limit - segments.length); return limit; } /** * Returns the zero-relative index of the line which is currently * at the top of the receiver. *

* This index can change when lines are scrolled or new lines are added or removed. *

* * @return the index of the top line * * @exception SWTException */ public int getTopIndex () { checkWidget (); if ((style & SWT.SINGLE) != 0) return 0; return (int)/*64*/OS.SendMessage (handle, OS.EM_GETFIRSTVISIBLELINE, 0, 0); } /** * Returns the top pixel. *

* The top pixel is the pixel position of the line * that is currently at the top of the widget. On * some platforms, a text widget can be scrolled by * pixels instead of lines so that a partial line * is displayed at the top of the widget. *

* The top pixel changes when the widget is scrolled. * The top pixel does not include the widget trimming. *

* * @return the pixel position of the top line * * @exception SWTException */ public int getTopPixel () { checkWidget (); /* * Note, EM_GETSCROLLPOS is implemented in Rich Edit 3.0 * and greater. The plain text widget and previous versions * of Rich Edit return zero. */ int [] buffer = new int [2]; long /*int*/ code = OS.SendMessage (handle, OS.EM_GETSCROLLPOS, 0, buffer); if (code == 1) return buffer [1]; return getTopIndex () * getLineHeight (); } /** * Inserts a string. *

* The old selection is replaced with the new text. *

* * @param string the string * * @exception IllegalArgumentException * @exception SWTException */ public void insert (String string) { checkWidget (); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); string = Display.withCrLf (string); if (hooks (SWT.Verify) || filters (SWT.Verify)) { int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); string = verifyText (string, start [0], end [0], null); if (string == null) return; } clearSegments (true); TCHAR buffer = new TCHAR (getCodePage (), string, true); /* * Feature in Windows. When an edit control with ES_MULTILINE * style that does not have the WS_VSCROLL style is full (i.e. * there is no space at the end to draw any more characters), * EM_REPLACESEL sends a WM_CHAR with a backspace character * to remove any further text that is added. This is an * implementation detail of the edit control that is unexpected * and can cause endless recursion when EM_REPLACESEL is sent * from a WM_CHAR handler. The fix is to ignore calling the * handler from WM_CHAR. */ ignoreCharacter = true; OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer); ignoreCharacter = false; applySegments (); } int mbcsToWcsPos (int mbcsPos) { if (mbcsPos <= 0) return 0; if (OS.IsUnicode) return mbcsPos; int cp = getCodePage (); int wcsTotal = 0, mbcsTotal = 0; byte [] buffer = new byte [128]; String delimiter = getLineDelimiter(); int delimiterSize = delimiter.length (); int count = (int)/*64*/OS.SendMessageA (handle, OS.EM_GETLINECOUNT, 0, 0); for (int line=0; line buffer.length) { buffer = new byte [mbcsSize + delimiterSize]; } //ENDIAN buffer [0] = (byte) (mbcsSize & 0xFF); buffer [1] = (byte) (mbcsSize >> 8); mbcsSize = (int)/*64*/OS.SendMessageA (handle, OS.EM_GETLINE, line, buffer); wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer, mbcsSize, null, 0); } if (line - 1 != count) { for (int i=0; i= mbcsPos) { int bufferSize = mbcsPos - mbcsTotal; wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer, bufferSize, null, 0); return wcsTotal + wcsSize; } wcsTotal += wcsSize; mbcsTotal += mbcsSize; } return wcsTotal; } /** * Pastes text from clipboard. *

* The selected text is deleted from the widget * and new text inserted from the clipboard. *

* * @exception SWTException */ public void paste () { checkWidget (); if ((style & SWT.READ_ONLY) != 0) return; OS.SendMessage (handle, OS.WM_PASTE, 0, 0); } void releaseWidget () { super.releaseWidget (); message = null; } /** * Removes the listener from the collection of listeners who will * be notified when the receiver's text is modified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @see ModifyListener * @see #addModifyListener */ public void removeModifyListener (ModifyListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook (SWT.Modify, listener); } /** * Removes the listener from the collection of listeners who will * be notified when the receiver's text is modified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @see SegmentEvent * @see SegmentListener * @see #addSegmentListener * * @since 3.8 */ public void removeSegmentListener (SegmentListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); eventTable.unhook (SWT.Segments, listener); clearSegments (true); applySegments (); } /** * Removes the listener from the collection of listeners who will * be notified when the control is selected by the user. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @see SelectionListener * @see #addSelectionListener */ public void removeSelectionListener (SelectionListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook (SWT.Selection, listener); eventTable.unhook (SWT.DefaultSelection,listener); } /** * Removes the listener from the collection of listeners who will * be notified when the control is verified. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @see VerifyListener * @see #addVerifyListener */ public void removeVerifyListener (VerifyListener listener) { checkWidget (); if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); if (eventTable == null) return; eventTable.unhook (SWT.Verify, listener); } /** * Selects all the text in the receiver. * * @exception SWTException */ public void selectAll () { checkWidget (); OS.SendMessage (handle, OS.EM_SETSEL, 0, -1); } boolean sendKeyEvent (int type, int msg, long /*int*/ wParam, long /*int*/ lParam, Event event) { if (!super.sendKeyEvent (type, msg, wParam, lParam, event)) { return false; } if ((style & SWT.READ_ONLY) != 0) return true; if (ignoreVerify) return true; if (type != SWT.KeyDown) return true; if (msg != OS.WM_CHAR && msg != OS.WM_KEYDOWN && msg != OS.WM_IME_CHAR) { return true; } if (event.character == 0) return true; if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return true; char key = event.character; int stateMask = event.stateMask; /* * Disable all magic keys that could modify the text * and don't send events when Alt, Shift or Ctrl is * pressed. */ switch (msg) { case OS.WM_CHAR: if (key != 0x08 && key != 0x7F && key != '\r' && key != '\t' && key != '\n') break; // FALL THROUGH case OS.WM_KEYDOWN: if ((stateMask & (SWT.ALT | SWT.SHIFT | SWT.CONTROL)) != 0) return false; break; } /* * Feature in Windows. If the left button is down in * the text widget, it refuses the character. The fix * is to detect this case and avoid sending a verify * event. */ if (OS.GetKeyState (OS.VK_LBUTTON) < 0) { if (handle == OS.GetCapture()) return true; } /* Verify the character */ String oldText = ""; int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); switch (key) { case 0x08: /* Bs */ if (start [0] == end [0]) { if (start [0] == 0) return true; int lineStart = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEINDEX, -1, 0); if (start [0] == lineStart) { start [0] = start [0] - DELIMITER.length (); } else { start [0] = start [0] - 1; if (!OS.IsUnicode && OS.IsDBLocale) { int [] newStart = new int [1], newEnd = new int [1]; OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); OS.SendMessage (handle, OS.EM_GETSEL, newStart, newEnd); if (start [0] != newStart [0]) start [0] = start [0] - 1; } } start [0] = Math.max (start [0], 0); } break; case 0x7F: /* Del */ if (start [0] == end [0]) { int length = OS.GetWindowTextLength (handle); if (start [0] == length) return true; int line = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEFROMCHAR, end [0], 0); int lineStart = (int)/*64*/OS.SendMessage (handle, OS.EM_LINEINDEX, line + 1, 0); if (end [0] == lineStart - DELIMITER.length ()) { end [0] = end [0] + DELIMITER.length (); } else { end [0] = end [0] + 1; if (!OS.IsUnicode && OS.IsDBLocale) { int [] newStart = new int [1], newEnd = new int [1]; OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); OS.SendMessage (handle, OS.EM_GETSEL, newStart, newEnd); if (end [0] != newEnd [0]) end [0] = end [0] + 1; } } end [0] = Math.min (end [0], length); } break; case '\r': /* Return */ if ((style & SWT.SINGLE) != 0) return true; oldText = DELIMITER; break; default: /* Tab and other characters */ if (key != '\t' && key < 0x20) return true; oldText = new String (new char [] {key}); break; } String newText = verifyText (oldText, start [0], end [0], event); if (newText == null) return false; if (newText == oldText) return true; newText = Display.withCrLf (newText); TCHAR buffer = new TCHAR (getCodePage (), newText, true); OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); /* * Feature in Windows. When an edit control with ES_MULTILINE * style that does not have the WS_VSCROLL style is full (i.e. * there is no space at the end to draw any more characters), * EM_REPLACESEL sends a WM_CHAR with a backspace character * to remove any further text that is added. This is an * implementation detail of the edit control that is unexpected * and can cause endless recursion when EM_REPLACESEL is sent * from a WM_CHAR handler. The fix is to ignore calling the * handler from WM_CHAR. */ ignoreCharacter = true; OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer); ignoreCharacter = false; return false; } void setBounds (int x, int y, int width, int height, int flags) { /* * Feature in Windows. When the caret is moved, * the text widget scrolls to show the new location. * This means that the text widget may be scrolled * to the right in order to show the caret when the * widget is not large enough to show both the caret * location and all the text. Unfortunately, when * the text widget is resized such that all the text * and the caret could be visible, Windows does not * scroll the widget back. The fix is to resize the * text widget, set the selection to the start of the * text and then restore the selection. This will * cause the text widget compute the correct scroll * position. */ if ((flags & OS.SWP_NOSIZE) == 0 && width != 0) { RECT rect = new RECT (); OS.GetWindowRect (handle, rect); long /*int*/ margins = OS.SendMessage (handle, OS.EM_GETMARGINS, 0, 0); int marginWidth = OS.LOWORD (margins) + OS.HIWORD (margins); if (rect.right - rect.left <= marginWidth) { int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (start [0] != 0 || end [0] != 0) { SetWindowPos (handle, 0, x, y, width, height, flags); OS.SendMessage (handle, OS.EM_SETSEL, 0, 0); OS.SendMessage (handle, OS.EM_SETSEL, start [0], end [0]); return; } } } super.setBounds (x, y, width, height, flags); /* * Bug in Windows. If the client area height is smaller than * the font height, then the multi-line text widget does not * update the formatting rectangle when resized. The fix is to * detect this case and explicitly set the formatting rectangle. */ if ((flags & OS.SWP_NOSIZE) == 0) { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) != 0) { long /*int*/ newFont, oldFont = 0; long /*int*/ hDC = OS.GetDC (handle); newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont); TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); OS.GetTextMetrics (hDC, tm); if (newFont != 0) OS.SelectObject (hDC, oldFont); OS.ReleaseDC (handle, hDC); RECT rect = new RECT(); OS.GetClientRect (handle, rect); if ((rect.bottom - rect.top) < tm.tmHeight) { long /*int*/ margins = OS.SendMessage (handle, OS.EM_GETMARGINS, 0, 0); rect.left += OS.LOWORD (margins); rect.right -= OS.HIWORD (margins); rect.top = 0; rect.bottom = tm.tmHeight; OS.SendMessage (handle, OS.EM_SETRECT, 0, rect); } } } } void setDefaultFont () { super.setDefaultFont (); setMargins (); } /** * Sets the double click enabled flag. *

* The double click flag enables or disables the * default action of the text widget when the user * double clicks. *

* Note: This operation is a hint and is not supported on * platforms that do not have this concept. *

* * @param doubleClick the new double click flag * * @exception SWTException */ public void setDoubleClickEnabled (boolean doubleClick) { checkWidget (); this.doubleClick = doubleClick; } /** * Sets the echo character. *

* The echo character is the character that is * displayed when the user enters text or the * text is changed by the programmer. Setting * the echo character to '\0' clears the echo * character and redraws the original text. * If for any reason the echo character is invalid, * or if the platform does not allow modification * of the echo character, the default echo character * for the platform is used. *

* * @param echo the new echo character * * @exception SWTException */ public void setEchoChar (char echo) { checkWidget (); if ((style & SWT.MULTI) != 0) return; if (echo != 0) { if ((echo = (char) Display.wcsToMbcs (echo, getCodePage ())) == 0) echo = '*'; } allowPasswordChar = true; OS.SendMessage (handle, OS.EM_SETPASSWORDCHAR, echo, 0); allowPasswordChar = false; /* * Bug in Windows. When the password character is changed, * Windows does not redraw to show the new password character. * The fix is to force a redraw when the character is set. */ OS.InvalidateRect (handle, null, true); } /** * Sets the editable state. * * @param editable the new editable state * * @exception SWTException */ public void setEditable (boolean editable) { checkWidget (); style &= ~SWT.READ_ONLY; if (!editable) style |= SWT.READ_ONLY; OS.SendMessage (handle, OS.EM_SETREADONLY, editable ? 0 : 1, 0); } public void setFont (Font font) { checkWidget (); super.setFont (font); setTabStops (tabs); setMargins (); } void setMargins () { /* * Bug in Windows. When EM_SETCUEBANNER is used to set the * banner text, the control does not take into account the * margins, causing the first character to be clipped. The * fix is to set the margins to zero. */ if ((style & SWT.SEARCH) != 0) { if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (6, 0)) { OS.SendMessage (handle, OS.EM_SETMARGINS, OS.EC_LEFTMARGIN | OS.EC_RIGHTMARGIN, 0); } } } /** * Sets the widget message. The message text is displayed * as a hint for the user, indicating the purpose of the field. *

* Typically this is used in conjunction with SWT.SEARCH. *

* * @param message the new message * * @exception IllegalArgumentException * @exception SWTException * * @since 3.3 */ public void setMessage (String message) { checkWidget (); if (message == null) error (SWT.ERROR_NULL_ARGUMENT); this.message = message; if (!OS.IsWinCE) { if (OS.WIN32_VERSION >= OS.VERSION (6, 0)) { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) == 0) { int length = message.length (); char [] chars = new char [length + 1]; message.getChars(0, length, chars, 0); OS.SendMessage (handle, OS.EM_SETCUEBANNER, 0, chars); } } else { OS.InvalidateRect (handle, null, true); } } } /** * Sets the orientation of the receiver, which must be one * of the constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT. *

* Note: This operation is a hint and is not supported on * platforms that do not have this concept. *

* * @param orientation new orientation style * * @exception SWTException * * @since 2.1.2 */ public void setOrientation (int orientation) { super.setOrientation (orientation); } /** * Sets the selection. *

* Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. *

* Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * regular array indexing rules. *

* * @param start new caret position * * @exception SWTException */ public void setSelection (int start) { checkWidget (); start = translateOffset (start); if (!OS.IsUnicode && OS.IsDBLocale) start = wcsToMbcsPos (start); OS.SendMessage (handle, OS.EM_SETSEL, start, start); OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); } /** * Sets the selection to the range specified * by the given start and end indices. *

* Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. *

* Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * usual array indexing rules. *

* * @param start the start of the range * @param end the end of the range * * @exception SWTException */ public void setSelection (int start, int end) { checkWidget (); start = translateOffset (start); end = translateOffset (end); if (!OS.IsUnicode && OS.IsDBLocale) { start = wcsToMbcsPos (start); end = wcsToMbcsPos (end); } OS.SendMessage (handle, OS.EM_SETSEL, start, end); OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); } public void setRedraw (boolean redraw) { checkWidget (); super.setRedraw (redraw); /* * Feature in Windows. When WM_SETREDRAW is used to turn * redraw off, the edit control is not scrolled to show the * i-beam. The fix is to detect that the i-beam has moved * while redraw is turned off and force it to be visible * when redraw is restored. */ if (!getDrawing ()) return; int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (!redraw) { oldStart = start [0]; oldEnd = end [0]; } else { if (oldStart == start [0] && oldEnd == end [0]) return; OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); } } /** * Sets the selection to the range specified * by the given point, where the x coordinate * represents the start index and the y coordinate * represents the end index. *

* Indexing is zero based. The range of * a selection is from 0..N where N is * the number of characters in the widget. *

* Text selections are specified in terms of * caret positions. In a text widget that * contains N characters, there are N+1 caret * positions, ranging from 0..N. This differs * from other functions that address character * position such as getText () that use the * usual array indexing rules. *

* * @param selection the point * * @exception IllegalArgumentException * @exception SWTException */ public void setSelection (Point selection) { checkWidget (); if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); setSelection (selection.x, selection.y); } /** * Sets the number of tabs. *

* Tab stop spacing is specified in terms of the * space (' ') character. The width of a single * tab stop is the pixel width of the spaces. *

* * @param tabs the number of tabs * * * @exception SWTException */ public void setTabs (int tabs) { checkWidget (); if (tabs < 0) return; setTabStops (this.tabs = tabs); } void setTabStops (int tabs) { /* * Feature in Windows. Windows expects the tab spacing in * dialog units so we must convert from space widths. Due * to round off error, the tab spacing may not be the exact * number of space widths, depending on the font. */ int width = (getTabWidth (tabs) * 4) / OS.LOWORD (OS.GetDialogBaseUnits ()); OS.SendMessage (handle, OS.EM_SETTABSTOPS, 1, new int [] {width}); } /** * Sets the contents of the receiver to the given string. If the receiver has style * SINGLE and the argument contains multiple lines of text, the result of this * operation is undefined and may vary from platform to platform. * * @param string the new text * * @exception IllegalArgumentException * @exception SWTException */ public void setText (String string) { checkWidget (); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); string = Display.withCrLf (string); if (hooks (SWT.Verify) || filters (SWT.Verify)) { int length = OS.GetWindowTextLength (handle); string = verifyText (string, 0, length, null); if (string == null) return; } clearSegments (false); int limit = (int)/*64*/OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF; if (string.length () > limit) string = string.substring (0, limit); TCHAR buffer = new TCHAR (getCodePage (), string, true); OS.SetWindowText (handle, buffer); applySegments (); /* * Bug in Windows. When the widget is multi line * text widget, it does not send a WM_COMMAND with * control code EN_CHANGE from SetWindowText () to * notify the application that the text has changed. * The fix is to send the event. */ int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) != 0) { sendEvent (SWT.Modify); // widget could be disposed at this point } } /** * Sets the contents of the receiver to the characters in the array. If the receiver * has style SWT.SINGLE and the argument contains multiple lines of text * then the result of this operation is undefined and may vary between platforms. *

* Note: Use the API to protect the text, for example, when the widget is used as * a password field. However, the text can't be protected if Verify or * Segment listener is added to the widget. *

* * @param text a character array that contains the new text * * @exception IllegalArgumentException * @exception SWTException * * @see #getTextChars() * * @since 3.7 */ public void setTextChars (char[] text) { checkWidget (); if (text == null) error (SWT.ERROR_NULL_ARGUMENT); text = Display.withCrLf (text); if (hooks (SWT.Verify) || filters (SWT.Verify)) { int length = OS.GetWindowTextLength (handle); String string = verifyText (new String (text), 0, length, null); if (string == null) return; text = new char [string.length()]; string.getChars (0, text.length, text, 0); } clearSegments (false); int limit = (int)/*64*/OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF; if (text.length > limit) { char [] temp = new char [limit]; for (int i = 0; i < limit; i++) temp [i] = text [i]; text = temp; } TCHAR buffer = new TCHAR (getCodePage (), text, true); OS.SetWindowText (handle, buffer); applySegments (); /* * Bug in Windows. When the widget is multi line * text widget, it does not send a WM_COMMAND with * control code EN_CHANGE from SetWindowText () to * notify the application that the text has changed. * The fix is to send the event. */ int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) != 0) { sendEvent (SWT.Modify); // widget could be disposed at this point } } /** * Sets the maximum number of characters that the receiver * is capable of holding to be the argument. *

* Instead of trying to set the text limit to zero, consider * creating a read-only text widget. *

* To reset this value to the default, use setTextLimit(Text.LIMIT). * Specifying a limit value larger than Text.LIMIT sets the * receiver's limit to Text.LIMIT. *

* * @param limit new text limit * * @exception IllegalArgumentException * @exception SWTException * * @see #LIMIT */ public void setTextLimit (int limit) { checkWidget (); if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); if (segments != null && limit > 0) { OS.SendMessage (handle, OS.EM_SETLIMITTEXT, limit + Math.min (segments.length, LIMIT - limit), 0); } else { OS.SendMessage (handle, OS.EM_SETLIMITTEXT, limit, 0); } } /** * Sets the zero-relative index of the line which is currently * at the top of the receiver. This index can change when lines * are scrolled or new lines are added and removed. * * @param index the index of the top item * * @exception SWTException */ public void setTopIndex (int index) { checkWidget (); if ((style & SWT.SINGLE) != 0) return; int count = (int)/*64*/OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0); index = Math.min (Math.max (index, 0), count - 1); int topIndex = (int)/*64*/OS.SendMessage (handle, OS.EM_GETFIRSTVISIBLELINE, 0, 0); OS.SendMessage (handle, OS.EM_LINESCROLL, 0, index - topIndex); } /** * Shows the selection. *

* If the selection is already showing * in the receiver, this method simply returns. Otherwise, * lines are scrolled until the selection is visible. *

* * @exception SWTException */ public void showSelection () { checkWidget (); OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); } int translateOffset (int offset) { if (segments == null) return offset; for (int i = 0, nSegments = segments.length; i < nSegments && offset - i >= segments [i]; i++) { offset++; } return offset; } int untranslateOffset (int offset) { if (segments == null) return offset; for (int i = 0, nSegments = segments.length; i < nSegments && offset > segments [i]; i++) { offset--; } return offset; } void updateMenuLocation (Event event) { Point point = display.map (this, null, getCaretLocation ()); event.x = point.x; event.y = point.y + getLineHeight (); } void updateOrientation (){ int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE); if ((style & SWT.RIGHT_TO_LEFT) != 0) { bits |= OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR; } else { bits &= ~(OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR); } OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits); fixAlignment (); } String verifyText (String string, int start, int end, Event keyEvent) { if (ignoreVerify) return string; Event event = new Event (); event.text = string; event.start = start; event.end = end; if (keyEvent != null) { event.character = keyEvent.character; event.keyCode = keyEvent.keyCode; event.stateMask = keyEvent.stateMask; } if (!OS.IsUnicode && OS.IsDBLocale) { event.start = mbcsToWcsPos (start); event.end = mbcsToWcsPos (end); } event.start = untranslateOffset (event.start); event.end = untranslateOffset (event.end); /* * It is possible (but unlikely), that application * code could have disposed the widget in the verify * event. If this happens, answer null to cancel * the operation. */ sendEvent (SWT.Verify, event); if (!event.doit || isDisposed ()) return null; return event.text; } int wcsToMbcsPos (int wcsPos) { if (wcsPos <= 0) return 0; if (OS.IsUnicode) return wcsPos; int cp = getCodePage (); int wcsTotal = 0, mbcsTotal = 0; byte [] buffer = new byte [128]; String delimiter = getLineDelimiter (); int delimiterSize = delimiter.length (); int count = (int)/*64*/OS.SendMessageA (handle, OS.EM_GETLINECOUNT, 0, 0); for (int line=0; line buffer.length) { buffer = new byte [mbcsSize + delimiterSize]; } //ENDIAN buffer [0] = (byte) (mbcsSize & 0xFF); buffer [1] = (byte) (mbcsSize >> 8); mbcsSize = (int)/*64*/OS.SendMessageA (handle, OS.EM_GETLINE, line, buffer); wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer, mbcsSize, null, 0); } if (line - 1 != count) { for (int i=0; i= wcsPos) { wcsSize = 0; int index = 0; while (index < mbcsSize) { if ((wcsTotal + wcsSize) == wcsPos) { return mbcsTotal + index; } if (OS.IsDBCSLeadByte (buffer [index++])) index++; wcsSize++; } return mbcsTotal + mbcsSize; } wcsTotal += wcsSize; mbcsTotal += mbcsSize; } return mbcsTotal; } int widgetStyle () { int bits = super.widgetStyle () | OS.ES_AUTOHSCROLL; if ((style & SWT.PASSWORD) != 0) bits |= OS.ES_PASSWORD; if ((style & SWT.CENTER) != 0) bits |= OS.ES_CENTER; if ((style & SWT.RIGHT) != 0) bits |= OS.ES_RIGHT; if ((style & SWT.READ_ONLY) != 0) bits |= OS.ES_READONLY; if ((style & SWT.SINGLE) != 0) { /* * Feature in Windows. When a text control is read-only, * uses COLOR_3DFACE for the background . If the text * controls single-line and is within a tab folder or * some other themed control, using WM_ERASEBKGND and * WM_CTRCOLOR to draw the theme background results in * pixel corruption. The fix is to use an ES_MULTILINE * text control instead. */ if ((style & SWT.READ_ONLY) != 0) { if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { bits |= OS.ES_MULTILINE; } } } return bits; } bits |= OS.ES_MULTILINE | OS.ES_NOHIDESEL | OS.ES_AUTOVSCROLL; if ((style & SWT.WRAP) != 0) bits &= ~(OS.WS_HSCROLL | OS.ES_AUTOHSCROLL); return bits; } TCHAR windowClass () { return EditClass; } long /*int*/ windowProc () { return EditProc; } long /*int*/ windowProc (long /*int*/ hwnd, int msg, long /*int*/ wParam, long /*int*/ lParam) { boolean processSegments = false, redraw = false; long /*int*/ code; if (hooks (SWT.Segments) || filters (SWT.Segments)) { switch (msg) { case OS.EM_UNDO: case OS.WM_UNDO: case OS.EM_CANUNDO: return 0; case OS.WM_KEYDOWN: processSegments = wParam == OS.VK_DELETE; break; case OS.WM_COPY: processSegments = segments != null; break; case OS.WM_CHAR: processSegments = !ignoreCharacter && OS.GetKeyState (OS.VK_CONTROL) >= 0 && OS.GetKeyState (OS.VK_MENU) >= 0; break; case OS.WM_PASTE: case OS.WM_CUT: case OS.WM_CLEAR: processSegments = true; break; } } if (processSegments) { if (getDrawing () && OS.IsWindowVisible (handle)) { redraw = true; OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0); } clearSegments (true); } if (msg == OS.EM_UNDO) { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) == 0) { LRESULT result = wmClipboard (OS.EM_UNDO, wParam, lParam); if (result != null) return result.value; return callWindowProc (hwnd, OS.EM_UNDO, wParam, lParam); } } if (msg == OS.EM_SETPASSWORDCHAR) { if (!allowPasswordChar) { return 1; } } if (msg == Display.SWT_RESTORECARET) { callWindowProc (hwnd, OS.WM_KILLFOCUS, 0, 0); callWindowProc (hwnd, OS.WM_SETFOCUS, 0, 0); return 1; } code = super.windowProc (hwnd, msg, wParam, lParam); if (processSegments) { applySegments (); if (redraw) { OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0); OS.InvalidateRect (handle, null, true); } OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0); } return code; } LRESULT WM_CHAR (long /*int*/ wParam, long /*int*/ lParam) { if (ignoreCharacter) return null; LRESULT result = super.WM_CHAR (wParam, lParam); if (result != null) return result; /* * Bug in Windows. When the user types CTRL and BS * in an edit control, a DEL character is generated. * Rather than deleting the text, the DEL character * is inserted into the control. The fix is to detect * this case and not call the window proc. */ switch ((int)/*64*/wParam) { case SWT.DEL: if (OS.GetKeyState (OS.VK_CONTROL) < 0) { return LRESULT.ZERO; } } /* * Feature in Windows. For some reason, when the * widget is a single line text widget, when the * user presses tab, return or escape, Windows beeps. * The fix is to look for these keys and not call * the window proc. */ if ((style & SWT.SINGLE) != 0) { switch ((int)/*64*/wParam) { case SWT.CR: sendSelectionEvent (SWT.DefaultSelection); // FALL THROUGH case SWT.TAB: case SWT.ESC: return LRESULT.ZERO; } } return result; } LRESULT WM_CLEAR (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_CLEAR (wParam, lParam); if (result != null) return result; return wmClipboard (OS.WM_CLEAR, wParam, lParam); } LRESULT WM_CUT (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_CUT (wParam, lParam); if (result != null) return result; return wmClipboard (OS.WM_CUT, wParam, lParam); } LRESULT WM_ERASEBKGND (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_ERASEBKGND (wParam, lParam); if ((style & SWT.READ_ONLY) != 0) { if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) != 0) { Control control = findBackgroundControl (); if (control == null && background == -1) { if ((state & THEME_BACKGROUND) != 0) { if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { control = findThemeControl (); if (control != null) { RECT rect = new RECT (); OS.GetClientRect (handle, rect); fillThemeBackground (wParam, control, rect); return LRESULT.ONE; } } } } } } } return result; } LRESULT WM_GETDLGCODE (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_GETDLGCODE (wParam, lParam); if (result != null) return result; /* * Bug in WinCE PPC. For some reason, sending WM_GETDLGCODE * to a multi-line edit control causes it to ignore return and * tab keys. The fix is to return the value which is normally * returned by the text window proc on other versions of Windows. */ if (OS.IsPPC) { if ((style & SWT.MULTI) != 0 && (style & SWT.READ_ONLY) == 0 && lParam == 0) { return new LRESULT (OS.DLGC_HASSETSEL | OS.DLGC_WANTALLKEYS | OS.DLGC_WANTCHARS); } } /* * Feature in Windows. Despite the fact that the * edit control is read only, it still returns a * dialog code indicating that it wants all keys. * The fix is to detect this case and clear the bits. * * NOTE: A read only edit control processes arrow keys * so DLGC_WANTARROWS should not be cleared. */ if ((style & SWT.READ_ONLY) != 0) { long /*int*/ code = callWindowProc (handle, OS.WM_GETDLGCODE, wParam, lParam); code &= ~(OS.DLGC_WANTALLKEYS | OS.DLGC_WANTTAB); return new LRESULT (code); } return null; } LRESULT WM_GETOBJECT (long /*int*/ wParam, long /*int*/ lParam) { /* * Ensure that there is an accessible object created for this * control because support for search text accessibility is * implemented in the accessibility package. */ if ((style & SWT.SEARCH) != 0) { if (accessible == null) accessible = new_Accessible (this); } return super.WM_GETOBJECT (wParam, lParam); } LRESULT WM_IME_CHAR (long /*int*/ wParam, long /*int*/ lParam) { /* Process a DBCS character */ Display display = this.display; display.lastKey = 0; display.lastAscii = (int)/*64*/wParam; display.lastVirtual = display.lastNull = display.lastDead = false; if (!sendKeyEvent (SWT.KeyDown, OS.WM_IME_CHAR, wParam, lParam)) { return LRESULT.ZERO; } /* * Feature in Windows. The Windows text widget uses * two 2 WM_CHAR's to process a DBCS key instead of * using WM_IME_CHAR. The fix is to allow the text * widget to get the WM_CHAR's but ignore sending * them to the application. */ ignoreCharacter = true; long /*int*/ result = callWindowProc (handle, OS.WM_IME_CHAR, wParam, lParam); MSG msg = new MSG (); int flags = OS.PM_REMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE; while (OS.PeekMessage (msg, handle, OS.WM_CHAR, OS.WM_CHAR, flags)) { OS.TranslateMessage (msg); OS.DispatchMessage (msg); } ignoreCharacter = false; sendKeyEvent (SWT.KeyUp, OS.WM_IME_CHAR, wParam, lParam); // widget could be disposed at this point display.lastKey = display.lastAscii = 0; return new LRESULT (result); } LRESULT WM_LBUTTONDBLCLK (long /*int*/ wParam, long /*int*/ lParam) { /* * Prevent Windows from processing WM_LBUTTONDBLCLK * when double clicking behavior is disabled by not * calling the window proc. */ LRESULT result = null; sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam); if (!sendMouseEvent (SWT.MouseDoubleClick, 1, handle, OS.WM_LBUTTONDBLCLK, wParam, lParam)) { result = LRESULT.ZERO; } if (!display.captureChanged && !isDisposed ()) { if (OS.GetCapture () != handle) OS.SetCapture (handle); } if (!doubleClick) return LRESULT.ZERO; /* * Bug in Windows. When the last line of text in the * widget is double clicked and the line is empty, Windows * hides the i-beam then moves it to the first line in * the widget but does not scroll to show the user. * If the user types without clicking the mouse, invalid * characters are displayed at the end of each line of * text in the widget. The fix is to detect this case * and avoid calling the window proc. */ int [] start = new int [1], end = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (start [0] == end [0]) { int length = OS.GetWindowTextLength (handle); if (length == start [0]) { int code = (int)/*64*/OS.SendMessage (handle, OS.EM_LINELENGTH, length, 0); if (code == 0) return LRESULT.ZERO; } } return result; } LRESULT WM_LBUTTONDOWN (long /*int*/ wParam, long /*int*/ lParam) { if (OS.IsPPC) { LRESULT result = null; Display display = this.display; display.captureChanged = false; boolean dispatch = sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam); /* * Note: On WinCE PPC, only attempt to recognize the gesture for * a context menu when the control contains a valid menu or there * are listeners for the MenuDetect event. * * Note: On WinCE PPC, the gesture that brings up a popup menu * on the text widget must keep the current text selection. As a * result, the window proc is only called if the menu is not shown. */ boolean hasMenu = menu != null && !menu.isDisposed (); if (hasMenu || hooks (SWT.MenuDetect)) { int x = OS.GET_X_LPARAM (lParam); int y = OS.GET_Y_LPARAM (lParam); SHRGINFO shrg = new SHRGINFO (); shrg.cbSize = SHRGINFO.sizeof; shrg.hwndClient = handle; shrg.ptDown_x = x; shrg.ptDown_y = y; shrg.dwFlags = OS.SHRG_RETURNCMD; int type = OS.SHRecognizeGesture (shrg); if (type == OS.GN_CONTEXTMENU) { showMenu (x, y); return LRESULT.ONE; } } if (dispatch) { result = new LRESULT (callWindowProc (handle, OS.WM_LBUTTONDOWN, wParam, lParam)); } else { result = LRESULT.ZERO; } if (!display.captureChanged && !isDisposed ()) { if (OS.GetCapture () != handle) OS.SetCapture (handle); } return result; } return super.WM_LBUTTONDOWN (wParam, lParam); } LRESULT WM_PASTE (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_PASTE (wParam, lParam); if (result != null) return result; return wmClipboard (OS.WM_PASTE, wParam, lParam); } LRESULT WM_UNDO (long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.WM_UNDO (wParam, lParam); if (result != null) return result; return wmClipboard (OS.WM_UNDO, wParam, lParam); } LRESULT wmClipboard (int msg, long /*int*/ wParam, long /*int*/ lParam) { if ((style & SWT.READ_ONLY) != 0) return null; if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return null; boolean call = false; int [] start = new int [1], end = new int [1]; String newText = null; switch (msg) { case OS.WM_CLEAR: case OS.WM_CUT: OS.SendMessage (handle, OS.EM_GETSEL, start, end); if (start [0] != end [0]) { newText = ""; call = true; } break; case OS.WM_PASTE: OS.SendMessage (handle, OS.EM_GETSEL, start, end); newText = getClipboardText (); break; case OS.EM_UNDO: case OS.WM_UNDO: if (OS.SendMessage (handle, OS.EM_CANUNDO, 0, 0) != 0) { ignoreModify = ignoreCharacter = true; callWindowProc (handle, msg, wParam, lParam); int length = OS.GetWindowTextLength (handle); int [] newStart = new int [1], newEnd = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, newStart, newEnd); if (length != 0 && newStart [0] != newEnd [0]) { TCHAR buffer = new TCHAR (getCodePage (), length + 1); OS.GetWindowText (handle, buffer, length + 1); newText = buffer.toString (newStart [0], newEnd [0] - newStart [0]); } else { newText = ""; } callWindowProc (handle, msg, wParam, lParam); OS.SendMessage (handle, OS.EM_GETSEL, start, end); ignoreModify = ignoreCharacter = false; } break; } if (newText != null) { String oldText = newText; newText = verifyText (newText, start [0], end [0], null); if (newText == null) return LRESULT.ZERO; if (!newText.equals (oldText)) { if (call) { callWindowProc (handle, msg, wParam, lParam); } newText = Display.withCrLf (newText); TCHAR buffer = new TCHAR (getCodePage (), newText, true); /* * Feature in Windows. When an edit control with ES_MULTILINE * style that does not have the WS_VSCROLL style is full (i.e. * there is no space at the end to draw any more characters), * EM_REPLACESEL sends a WM_CHAR with a backspace character * to remove any further text that is added. This is an * implementation detail of the edit control that is unexpected * and can cause endless recursion when EM_REPLACESEL is sent * from a WM_CHAR handler. The fix is to ignore calling the * handler from WM_CHAR. */ ignoreCharacter = true; OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer); ignoreCharacter = false; return LRESULT.ZERO; } } if (msg == OS.WM_UNDO) { ignoreVerify = ignoreCharacter = true; callWindowProc (handle, OS.WM_UNDO, wParam, lParam); ignoreVerify = ignoreCharacter = false; return LRESULT.ONE; } return null; } LRESULT wmColorChild (long /*int*/ wParam, long /*int*/ lParam) { if ((style & SWT.READ_ONLY) != 0) { if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); if ((bits & OS.ES_MULTILINE) != 0) { Control control = findBackgroundControl (); if (control == null && background == -1) { if ((state & THEME_BACKGROUND) != 0) { if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { control = findThemeControl (); if (control != null) { OS.SetTextColor (wParam, getForegroundPixel ()); OS.SetBkColor (wParam, getBackgroundPixel ()); OS.SetBkMode (wParam, OS.TRANSPARENT); return new LRESULT (OS.GetStockObject (OS.NULL_BRUSH)); } } } } } } } return super.wmColorChild (wParam, lParam); } LRESULT wmCommandChild (long /*int*/ wParam, long /*int*/ lParam) { int code = OS.HIWORD (wParam); switch (code) { case OS.EN_CHANGE: if (findImageControl () != null) { OS.InvalidateRect (handle, null, true); } if (ignoreModify) break; /* * It is possible (but unlikely), that application * code could have disposed the widget in the modify * event. If this happens, end the processing of the * Windows message by returning zero as the result of * the window proc. */ sendEvent (SWT.Modify); if (isDisposed ()) return LRESULT.ZERO; break; case OS.EN_ALIGN_LTR_EC: case OS.EN_ALIGN_RTL_EC: int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE); if ((bits & OS.WS_EX_RTLREADING) != 0) { style &= ~SWT.LEFT_TO_RIGHT; style |= SWT.RIGHT_TO_LEFT; } else { style &= ~SWT.RIGHT_TO_LEFT; style |= SWT.LEFT_TO_RIGHT; } Event event = new Event(); event.doit = true; sendEvent(SWT.OrientationChange, event); if (!event.doit) { if (code == OS.EN_ALIGN_LTR_EC) { bits |= (OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR); style &= ~SWT.LEFT_TO_RIGHT; style |= SWT.RIGHT_TO_LEFT; } else { bits &= ~(OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR); style &= ~SWT.RIGHT_TO_LEFT; style |= SWT.LEFT_TO_RIGHT; } OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits); } else { clearSegments (true); applySegments (); } fixAlignment(); break; } return super.wmCommandChild (wParam, lParam); } LRESULT wmKeyDown (long /*int*/ hwnd, long /*int*/ wParam, long /*int*/ lParam) { LRESULT result = super.wmKeyDown (hwnd, wParam, lParam); if (result != null) return result; if (segments != null) { switch ((int)/*64*/wParam) { case OS.VK_LEFT: case OS.VK_UP: case OS.VK_RIGHT: case OS.VK_DOWN: long /*int*/ code = 0; int [] start = new int [1], end = new int [1], newStart = new int [1], newEnd = new int [1]; OS.SendMessage (handle, OS.EM_GETSEL, start, end); while (true) { code = callWindowProc (handle, OS.WM_KEYDOWN, wParam, lParam); OS.SendMessage (handle, OS.EM_GETSEL, newStart, newEnd); if (newStart [0] != start [0]) { if (untranslateOffset (newStart [0]) != untranslateOffset (start [0])) break; } else if (newEnd [0] != end [0]) { if (untranslateOffset (newEnd [0]) != untranslateOffset (end [0])) break; } else { break; } start [0] = newStart [0]; end [0] = newEnd [0]; } result = code == 0 ? LRESULT.ZERO : new LRESULT (code); } } return result; } }