264398 - Arrow_Down does not scroll after tabbing into Browser

1 files changed, 63 insertions, 65 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleControlSite.java b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleControlSite.java
index 3290cdb0f3..3b4c810573 100755
--- a/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleControlSite.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleControlSite.java
@@ -64,6 +64,10 @@ public class OleControlSite extends OleClientSite
 	
 	private Font font;
 
+	// work around for IE destroying the caret
+	static int SWT_RESTORECARET;
+
+	static final String SHELL_PROG_ID = "Shell.Explorer";	//$NON-NLS-1$
 
 /**
  * Create an OleControlSite child widget using the OLE Document type associated with the
@@ -652,71 +656,65 @@ private int OnControlInfoChanged() {
 	}
 	return COM.S_OK;
 }
-
-// The following is intentionally commented, it's not believed that
-// OLEIVERB_UIACTIVATE and UIDeactivate should be invoked for every
-// received focusIn and focusOut, respectively.
-//
-//void onFocusIn(Event e) {
-//	String progID = getProgramID();
-//	if (progID == null) return;
-//	if (!progID.startsWith("Shell.Explorer")) {
-//		super.onFocusIn(e);
-//		return;
-//	}
-//	if (objIOleInPlaceObject == null) return;
-//	doVerb(OLE.OLEIVERB_UIACTIVATE);
-//	if (isFocusControl()) return;
-//	int /*long*/[] phwnd = new int /*long*/[1];
-//	objIOleInPlaceObject.GetWindow(phwnd);
-//	if (phwnd[0] == 0) return;
-//	OS.SetFocus(phwnd[0]);
-//}
-//void onFocusOut(Event e) {
-//	if (objIOleInPlaceObject == null) return;
-//	String progID = getProgramID();
-//	if (progID == null) return;
-//	if (!progID.startsWith("Shell.Explorer")) {
-//		super.onFocusOut(e);
-//		return;
-//	}
-//	/*
-//	* Bug in Windows.  When IE7 loses focus and UIDeactivate()
-//	* is called, IE destroys the caret even though it is
-//	* no longer owned by IE.  If focus has moved to a control
-//	* that shows a caret then the caret disappears.  The fix 
-//	* is to detect this case and restore the caret.
-//	*/
-//	int threadId = OS.GetCurrentThreadId();
-//	GUITHREADINFO lpgui1 = new GUITHREADINFO();
-//	lpgui1.cbSize = GUITHREADINFO.sizeof;
-//	OS.GetGUIThreadInfo(threadId, lpgui1);
-//	objIOleInPlaceObject.UIDeactivate();
-//	if (lpgui1.hwndCaret != 0) {
-//		GUITHREADINFO lpgui2 = new GUITHREADINFO();
-//		lpgui2.cbSize = GUITHREADINFO.sizeof;
-//		OS.GetGUIThreadInfo(threadId, lpgui2);
-//		if (lpgui2.hwndCaret == 0 && lpgui1.hwndCaret == OS.GetFocus()) {
-//			if (SWT_RESTORECARET == 0) {
-//				SWT_RESTORECARET = OS.RegisterWindowMessage (new TCHAR (0, "SWT_RESTORECARET", true));
-//			}
-//			/*
-//			* If the caret was not restored by SWT, put it back using
-//			* the information from GUITHREADINFO.  Note that this will
-//			* not be correct when the caret has a bitmap.  There is no
-//			* API to query the bitmap that the caret is using.
-//			*/
-//			if (OS.SendMessage (lpgui1.hwndCaret, SWT_RESTORECARET, 0, 0) == 0) {
-//				int width = lpgui1.right - lpgui1.left;
-//				int height = lpgui1.bottom - lpgui1.top;
-//				OS.CreateCaret (lpgui1.hwndCaret, 0, width, height);
-//				OS.SetCaretPos (lpgui1.left, lpgui1.top);
-//				OS.ShowCaret (lpgui1.hwndCaret);
-//			}
-//		}
-//	}
-//}
-
+void onFocusIn(Event e) {
+	String progID = getProgramID();
+	if (progID == null) return;
+	if (!progID.startsWith(SHELL_PROG_ID)) {
+		super.onFocusIn(e);
+		return;
+	}
+	if (objIOleInPlaceObject == null) return;
+	doVerb(OLE.OLEIVERB_UIACTIVATE);
+	if (isFocusControl()) return;
+	int /*long*/[] phwnd = new int /*long*/[1];
+	objIOleInPlaceObject.GetWindow(phwnd);
+	if (phwnd[0] == 0) return;
+	OS.SetFocus(phwnd[0]);
+}
+void onFocusOut(Event e) {
+	if (objIOleInPlaceObject == null) return;
+	String progID = getProgramID();
+	if (progID == null) return;
+	if (!progID.startsWith(SHELL_PROG_ID)) {
+		super.onFocusOut(e);
+		return;
+	}
+	/*
+	* Bug in Windows.  When IE7 loses focus and UIDeactivate()
+	* is called, IE destroys the caret even though it is
+	* no longer owned by IE.  If focus has moved to a control
+	* that shows a caret then the caret disappears.  The fix 
+	* is to detect this case and restore the caret.
+	*/
+	int threadId = OS.GetCurrentThreadId();
+	GUITHREADINFO lpgui1 = new GUITHREADINFO();
+	lpgui1.cbSize = GUITHREADINFO.sizeof;
+	OS.GetGUIThreadInfo(threadId, lpgui1);
+	objIOleInPlaceObject.UIDeactivate();
+	if (lpgui1.hwndCaret != 0) {
+		GUITHREADINFO lpgui2 = new GUITHREADINFO();
+		lpgui2.cbSize = GUITHREADINFO.sizeof;
+		OS.GetGUIThreadInfo(threadId, lpgui2);
+		if (lpgui2.hwndCaret == 0 && lpgui1.hwndCaret == OS.GetFocus()) {
+			if (SWT_RESTORECARET == 0) {
+				SWT_RESTORECARET = OS.RegisterWindowMessage (new TCHAR (0, "SWT_RESTORECARET", true));
+			}
+			/*
+			* If the caret was not restored by SWT, put it back using
+			* the information from GUITHREADINFO.  Note that this will
+			* not be correct when the caret has a bitmap.  There is no
+			* API to query the bitmap that the caret is using.
+			*/
+			if (OS.SendMessage (lpgui1.hwndCaret, SWT_RESTORECARET, 0, 0) == 0) {
+				int width = lpgui1.right - lpgui1.left;
+				int height = lpgui1.bottom - lpgui1.top;
+				OS.CreateCaret (lpgui1.hwndCaret, 0, width, height);
+				OS.SetCaretPos (lpgui1.left, lpgui1.top);
+				OS.ShowCaret (lpgui1.hwndCaret);
+			}
+		}
+	}
+}
 private int OnFocus(int fGotFocus) {
 	return COM.S_OK;
 }