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/*******************************************************************************
* Copyright (c) 2005, 2012 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.browser;
import java.util.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.mozilla.*;
import org.eclipse.swt.internal.win32.*;
import org.eclipse.swt.widgets.*;
class MozillaDelegate {
Browser browser;
Vector childWindows = new Vector (9);
static long /*int*/ MozillaProc;
static Callback SubclassProc;
MozillaDelegate (Browser browser) {
super ();
this.browser = browser;
}
static Browser findBrowser (long /*int*/ handle) {
Display display = Display.getCurrent ();
return (Browser)display.findWidget (handle);
}
static String getCacheParentPath () {
/* Use the character encoding for the default locale */
TCHAR buffer = new TCHAR (0, OS.MAX_PATH);
if (OS.SHGetFolderPath (0, OS.CSIDL_LOCAL_APPDATA, 0, OS.SHGFP_TYPE_CURRENT, buffer) == OS.S_OK) {
return buffer.toString (0, buffer.strlen ()) + Mozilla.SEPARATOR_OS + "eclipse"; //$NON-NLS-1$
}
return getProfilePath ();
}
static String[] getJSLibraryNames () {
return new String[] {"mozjs.dll", "xul.dll"}; //$NON-NLS-1$ //$NON-NLS-2$
}
static String getJSLibraryName_Pre4 () {
return "js3250.dll"; //$NON-NLS-1$
}
static String getLibraryName () {
return "xpcom.dll"; //$NON-NLS-1$
}
static String getProfilePath () {
String baseDir;
/* Use the character encoding for the default locale */
TCHAR buffer = new TCHAR (0, OS.MAX_PATH);
if (OS.SHGetFolderPath (0, OS.CSIDL_APPDATA, 0, OS.SHGFP_TYPE_CURRENT, buffer) == OS.S_OK) {
baseDir = buffer.toString (0, buffer.strlen ());
} else {
baseDir = System.getProperty("user.home"); //$NON-NLS-1$
}
return baseDir + Mozilla.SEPARATOR_OS + "Mozilla" + Mozilla.SEPARATOR_OS + "eclipse"; //$NON-NLS-1$ //$NON-NLS-2$
}
static String getSWTInitLibraryName () {
return "swt-xulrunner"; //$NON-NLS-1$
}
static void loadAdditionalLibraries (String mozillaPath) {
}
static char[] mbcsToWcs (String codePage, byte[] buffer) {
char[] chars = new char[buffer.length];
int charCount = OS.MultiByteToWideChar (OS.CP_ACP, OS.MB_PRECOMPOSED, buffer, buffer.length, chars, chars.length);
if (charCount == chars.length) return chars;
char[] result = new char[charCount];
System.arraycopy (chars, 0, result, 0, charCount);
return result;
}
static boolean needsSpinup () {
return false;
}
static byte[] wcsToMbcs (String codePage, String string, boolean terminate) {
int byteCount;
char[] chars = new char[string.length()];
string.getChars (0, chars.length, chars, 0);
byte[] bytes = new byte[byteCount = chars.length * 2 + (terminate ? 1 : 0)];
byteCount = OS.WideCharToMultiByte (OS.CP_ACP, 0, chars, chars.length, bytes, byteCount, null, null);
if (terminate) {
byteCount++;
} else {
if (bytes.length != byteCount) {
byte[] result = new byte[byteCount];
System.arraycopy (bytes, 0, result, 0, byteCount);
bytes = result;
}
}
return bytes;
}
static long /*int*/ windowProc (long /*int*/ hwnd, long /*int*/ msg, long /*int*/ wParam, long /*int*/ lParam) {
switch ((int)/*64*/msg) {
case OS.WM_ERASEBKGND:
RECT rect = new RECT ();
OS.GetClientRect (hwnd, rect);
OS.FillRect (wParam, rect, OS.GetSysColorBrush (OS.COLOR_WINDOW));
break;
}
return OS.CallWindowProc (MozillaProc, hwnd, (int)/*64*/msg, wParam, lParam);
}
void addWindowSubclass () {
long /*int*/ hwndChild = OS.GetWindow (browser.handle, OS.GW_CHILD);
if (SubclassProc == null) {
SubclassProc = new Callback (MozillaDelegate.class, "windowProc", 4); //$NON-NLS-1$
MozillaProc = OS.GetWindowLongPtr (hwndChild, OS.GWL_WNDPROC);
}
OS.SetWindowLongPtr (hwndChild, OS.GWL_WNDPROC, SubclassProc.getAddress ());
}
int createBaseWindow (nsIBaseWindow baseWindow) {
return baseWindow.Create ();
}
long /*int*/ getHandle () {
return browser.handle;
}
long /*int*/ getSiteWindow () {
/*
* As of XULRunner 4, XULRunner's printing facilities on Windows destroy
* the HWND that is returned from here once the print dialog is dismissed
* (originating bug: https://bugzilla.mozilla.org/show_bug.cgi?id=588735 ).
* For this scenario it is now expected that the handle that is returned
* here is a child of the browser handle, not the browser handle itself.
*
* The other scenario that requests this handle is the Mozilla.getBrowser()
* implementation. This method's GetSiteWindow() invocation is surrounded
* by boolean flags to help differentiate it from the printing scenario,
* since Mozilla.getBrowser() does not destroy the handle it receives back.
*
* All children that are created here are stored and then destroyed once
* the current page is left. This is guard code that should only be needed
* if Mozilla.getSiteWindow() is ever invoked by a path other than one of
* the two described above.
*/
if (Mozilla.IsPre_4 || Mozilla.IsGettingSiteWindow) {
return getHandle ();
}
Composite child = new Composite (browser, SWT.NONE);
childWindows.addElement (child);
return child.handle;
}
void handleFocus () {
}
void handleMouseDown () {
}
boolean hookEnterExit () {
return true;
}
void init () {
if (!Mozilla.IsPre_4) {
/*
* In XULRunner versions > 4, sending WM_GETDLGCODE to a WM_KEYDOWN's MSG hwnd answers 0
* instead of the expected DLGC_WANTALLKEYS. This causes the default traversal framework
* perform traversals outside of the Browser when it should not. Hook a Traverse listener
* to work around these problems.
*/
browser.addListener (SWT.Traverse, new Listener () {
public void handleEvent (Event event) {
switch (event.detail) {
case SWT.TRAVERSE_RETURN:
case SWT.TRAVERSE_ESCAPE: {
/* always veto the traversal */
event.doit = false;
break;
}
case SWT.TRAVERSE_TAB_NEXT:
case SWT.TRAVERSE_TAB_PREVIOUS: {
/* veto the traversal whenever an element in the browser has focus */
long /*int*/[] result = new long /*int*/[1];
int rc = XPCOM.NS_GetServiceManager (result);
if (rc != XPCOM.NS_OK) Mozilla.error (rc);
if (result[0] == 0) Mozilla.error (XPCOM.NS_NOINTERFACE);
nsIServiceManager serviceManager = new nsIServiceManager (result[0]);
result[0] = 0;
byte[] aContractID = MozillaDelegate.wcsToMbcs (null, XPCOM.NS_FOCUSMANAGER_CONTRACTID, true);
rc = serviceManager.GetServiceByContractID (aContractID, nsIFocusManager.NS_IFOCUSMANAGER_10_IID, result);
serviceManager.Release ();
if (rc == XPCOM.NS_OK && result[0] != 0) {
nsIFocusManager focusManager = new nsIFocusManager (result[0]);
result[0] = 0;
rc = focusManager.GetFocusedElement (result);
focusManager.Release ();
event.doit = result[0] == 0;
if (rc == XPCOM.NS_OK && result[0] != 0) {
new nsISupports (result[0]).Release ();
}
}
break;
}
}
}
});
/* children created in getSiteHandle() should be destroyed whenever a page is left */
browser.addLocationListener (new LocationAdapter () {
public void changing (LocationEvent event) {
Enumeration enumeration = childWindows.elements ();
while (enumeration.hasMoreElements ()) {
((Composite)enumeration.nextElement ()).dispose ();
}
childWindows.clear ();
}
});
}
}
void onDispose (long /*int*/ embedHandle) {
removeWindowSubclass ();
childWindows = null;
browser = null;
}
void removeWindowSubclass () {
if (SubclassProc == null) return;
long /*int*/ hwndChild = OS.GetWindow (browser.handle, OS.GW_CHILD);
OS.SetWindowLongPtr (hwndChild, OS.GWL_WNDPROC, MozillaProc);
}
boolean sendTraverse () {
return false;
}
void setSize (long /*int*/ embedHandle, int width, int height) {
}
}
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