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package org.eclipse.swt.examples.controlexample;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved
*/
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.custom.*;
class TextTab extends ScrollableTab {
/* Example widgets and groups that contain them */
Text text;
StyledText styledText;
Group textGroup, styledTextGroup, styledTextStyleGroup;
/* Style widgets added to the "Style" group */
Button wrapButton, readOnlyButton;
/* Buttons for adding StyleRanges to StyledText */
Button boldButton, redButton, yellowButton;
Image boldImage, redImage, yellowImage;
/**
* Creates the Tab within a given instance of ControlExample.
*/
TextTab(ControlExample instance) {
super(instance);
}
/**
* Creates a bitmap image.
*/
Image createBitmapImage (Display display, String name) {
ImageData source = new ImageData(ControlExample.class.getResourceAsStream(name + ".bmp"));
ImageData mask = new ImageData(ControlExample.class.getResourceAsStream(name + "_mask.bmp"));
return new Image (display, source, mask);
}
/**
* Creates the "Control" widget children.
*/
void createControlWidgets () {
super.createControlWidgets ();
/* Add a group for modifying the StyledText widget */
createStyledTextStyleGroup ();
}
/**
* Creates the "Example" group.
*/
void createExampleGroup () {
super.createExampleGroup ();
/* Create a group for the text widget */
textGroup = new Group (exampleGroup, SWT.NULL);
textGroup.setLayout (new GridLayout ());
textGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
textGroup.setText ("Text");
/* Create a group for the styled text widget */
styledTextGroup = new Group (exampleGroup, SWT.NULL);
styledTextGroup.setLayout (new GridLayout ());
styledTextGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
styledTextGroup.setText ("StyledText");
}
/**
* Creates the "Example" widgets.
*/
void createExampleWidgets () {
/* Compute the widget style */
int style = SWT.NONE;
if (singleButton.getSelection ()) style |= SWT.SINGLE;
if (multiButton.getSelection ()) style |= SWT.MULTI;
if (horizontalButton.getSelection ()) style |= SWT.H_SCROLL;
if (verticalButton.getSelection ()) style |= SWT.V_SCROLL;
if (wrapButton.getSelection ()) style |= SWT.WRAP;
if (readOnlyButton.getSelection ()) style |= SWT.READ_ONLY;
if (borderButton.getSelection ()) style |= SWT.BORDER;
/* Create the example widgets */
text = new Text (textGroup, style);
text.setText (ControlExample.getResourceString("Example_string"));
text.append (text.DELIMITER);
text.append (ControlExample.getResourceString("One_Two_Three"));
styledText = new StyledText (styledTextGroup, style);
styledText.setText (ControlExample.getResourceString("Example_string"));
styledText.append ("\n");
styledText.append (ControlExample.getResourceString("One_Two_Three"));
}
/**
* Creates the "Style" group.
*/
void createStyleGroup() {
super.createStyleGroup();
/* Create the extra widgets */
wrapButton = new Button (styleGroup, SWT.CHECK);
wrapButton.setText ("SWT.WRAP");
readOnlyButton = new Button (styleGroup, SWT.CHECK);
readOnlyButton.setText ("SWT.READ_ONLY");
}
/**
* Creates the "StyledText Style" group.
*/
void createStyledTextStyleGroup () {
final Display display = controlGroup.getDisplay ();
styledTextStyleGroup = new Group (controlGroup, SWT.NONE);
styledTextStyleGroup.setText (ControlExample.getResourceString ("StyledText_Styles"));
styledTextStyleGroup.setLayout (new GridLayout(2, false));
styledTextStyleGroup.setLayoutData (new GridData (GridData.HORIZONTAL_ALIGN_FILL));
/* Get images */
boldImage = createBitmapImage (display, "bold");
redImage = createBitmapImage (display, "red");
yellowImage = createBitmapImage (display, "yellow");
/* Create controls to modify the StyledText */
Label label = new Label (styledTextStyleGroup, SWT.NONE);
label.setText (ControlExample.getResourceString ("StyledText_Style_Instructions"));
GridData data = new GridData(GridData.FILL_HORIZONTAL);
data.horizontalSpan = 2;
label.setLayoutData(data);
new Label (styledTextStyleGroup, SWT.NONE).setText (ControlExample.getResourceString ("Bold"));
boldButton = new Button (styledTextStyleGroup, SWT.PUSH);
boldButton.setImage (boldImage);
boldButton.addSelectionListener(new SelectionAdapter () {
public void widgetSelected (SelectionEvent e) {
Point sel = styledText.getSelectionRange();
if ((sel == null) || (sel.y == 0)) return;
StyleRange style;
for (int i = sel.x; i<sel.x+sel.y; i++) {
StyleRange range = styledText.getStyleRangeAtOffset(i);
if (range == null) {style = new StyleRange(i, 1, null, null, SWT.BOLD);}
else {style = new StyleRange(i, 1, range.foreground, range.background, SWT.BOLD);};
styledText.setStyleRange(style);
}
styledText.setSelectionRange(sel.x + sel.y, 0);
}
});
new Label (styledTextStyleGroup, SWT.NONE).setText (ControlExample.getResourceString ("Foreground_Style"));
redButton = new Button (styledTextStyleGroup, SWT.PUSH);
redButton.setImage (redImage);
new Label (styledTextStyleGroup, SWT.NONE).setText (ControlExample.getResourceString ("Background_Style"));
yellowButton = new Button (styledTextStyleGroup, SWT.PUSH);
yellowButton.setImage (yellowImage);
SelectionListener colorListener = new SelectionAdapter () {
public void widgetSelected (SelectionEvent e) {
Point sel = styledText.getSelectionRange();
if ((sel == null) || (sel.y == 0)) return;
Color fg, bg;
if (e.widget == redButton) {
fg = display.getSystemColor (SWT.COLOR_RED);
bg = null;
} else if (e.widget == yellowButton) {
fg = null;
bg = display.getSystemColor (SWT.COLOR_YELLOW);
} else {
fg = bg = null;
}
StyleRange style;
for (int i = sel.x; i<sel.x+sel.y; i++) {
StyleRange range = styledText.getStyleRangeAtOffset(i);
if (range == null) {
style = new StyleRange(i, 1, fg, bg, SWT.NORMAL);
}
else {
if (range.foreground != null) fg = range.foreground;
if (range.background != null) bg = range.background;
style = new StyleRange(i, 1, fg, bg, range.fontStyle);
};
styledText.setStyleRange(style);
}
styledText.setSelectionRange(sel.x + sel.y, 0);
};
};
redButton.addSelectionListener(colorListener);
yellowButton.addSelectionListener(colorListener);
yellowButton.addDisposeListener(new DisposeListener () {
public void widgetDisposed (DisposeEvent e) {
boldImage.dispose();
redImage.dispose();
yellowImage.dispose();
}
});
}
/**
* Gets the "Example" widget children.
*/
Control [] getExampleWidgets () {
return new Control [] {text, styledText};
}
/**
* Gets the text for the tab folder item.
*/
String getTabText () {
return "Text";
}
/**
* Sets the state of the "Example" widgets.
*/
void setExampleWidgetState () {
super.setExampleWidgetState ();
wrapButton.setSelection ((text.getStyle () & SWT.WRAP) != 0);
readOnlyButton.setSelection ((text.getStyle () & SWT.READ_ONLY) != 0);
}
}
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