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/*******************************************************************************
* Copyright (c) 2003, 2008 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 org.eclipse.swt.*;
import org.eclipse.swt.internal.C;
import org.eclipse.swt.internal.mozilla.*;
import org.eclipse.swt.widgets.*;
/**
* This class implements the nsIHelperAppLauncherDialog interface for mozilla
* versions 1.4 - 1.8.x. For mozilla versions >= 1.9 this interface is
* implemented by class HelperAppLauncherDialog_1_9. HelperAppLauncherDialogFactory
* determines at runtime which of these classes to instantiate.
*/
class HelperAppLauncherDialog {
XPCOMObject supports;
XPCOMObject helperAppLauncherDialog;
int refCount = 0;
HelperAppLauncherDialog () {
createCOMInterfaces ();
}
int AddRef () {
refCount++;
return refCount;
}
void createCOMInterfaces () {
/* Create each of the interfaces that this object implements */
supports = new XPCOMObject (new int[] {2, 0, 0}) {
public long /*int*/ method0 (long /*int*/[] args) {return QueryInterface (args[0], args[1]);}
public long /*int*/ method1 (long /*int*/[] args) {return AddRef ();}
public long /*int*/ method2 (long /*int*/[] args) {return Release ();}
};
helperAppLauncherDialog = new XPCOMObject (new int[] {2, 0, 0, 3, 5}) {
public long /*int*/ method0 (long /*int*/[] args) {return QueryInterface (args[0], args[1]);}
public long /*int*/ method1 (long /*int*/[] args) {return AddRef ();}
public long /*int*/ method2 (long /*int*/[] args) {return Release ();}
public long /*int*/ method3 (long /*int*/[] args) {return Show (args[0], args[1], (int)/*64*/args[2]);}
public long /*int*/ method4 (long /*int*/[] args) {return PromptForSaveToFile (args[0], args[1], args[2], args[3], args[4]);}
};
}
void disposeCOMInterfaces () {
if (supports != null) {
supports.dispose ();
supports = null;
}
if (helperAppLauncherDialog != null) {
helperAppLauncherDialog.dispose ();
helperAppLauncherDialog = null;
}
}
long /*int*/ getAddress () {
return helperAppLauncherDialog.getAddress ();
}
int QueryInterface (long /*int*/ riid, long /*int*/ ppvObject) {
if (riid == 0 || ppvObject == 0) return XPCOM.NS_ERROR_NO_INTERFACE;
nsID guid = new nsID ();
XPCOM.memmove (guid, riid, nsID.sizeof);
if (guid.Equals (nsISupports.NS_ISUPPORTS_IID)) {
XPCOM.memmove (ppvObject, new long /*int*/[] {supports.getAddress ()}, C.PTR_SIZEOF);
AddRef ();
return XPCOM.NS_OK;
}
if (guid.Equals (nsIHelperAppLauncherDialog.NS_IHELPERAPPLAUNCHERDIALOG_IID)) {
XPCOM.memmove (ppvObject, new long /*int*/[] {helperAppLauncherDialog.getAddress ()}, C.PTR_SIZEOF);
AddRef ();
return XPCOM.NS_OK;
}
XPCOM.memmove (ppvObject, new long /*int*/[] {0}, C.PTR_SIZEOF);
return XPCOM.NS_ERROR_NO_INTERFACE;
}
int Release () {
refCount--;
/*
* Note. This instance lives as long as the download it is binded to.
* Its reference count is expected to go down to 0 when the download
* has completed or when it has been cancelled. E.g. when the user
* cancels the File Dialog, cancels or closes the Download Dialog
* and when the Download Dialog goes away after the download is completed.
*/
if (refCount == 0) disposeCOMInterfaces ();
return refCount;
}
/* nsIHelperAppLauncherDialog */
int Show (long /*int*/ aLauncher, long /*int*/ aContext, int aReason) {
/*
* The interface for nsIHelperAppLauncher changed as of mozilla 1.8. Query the received
* nsIHelperAppLauncher for the new interface, and if it is not found then fall back to
* the old interface.
*/
nsISupports supports = new nsISupports (aLauncher);
long /*int*/[] result = new long /*int*/[1];
int rc = supports.QueryInterface (nsIHelperAppLauncher_1_8.NS_IHELPERAPPLAUNCHER_IID, result);
if (rc == XPCOM.NS_OK) { /* >= 1.8 */
nsIHelperAppLauncher_1_8 helperAppLauncher = new nsIHelperAppLauncher_1_8 (aLauncher);
rc = helperAppLauncher.SaveToDisk (0, 0);
helperAppLauncher.Release ();
return rc;
}
nsIHelperAppLauncher helperAppLauncher = new nsIHelperAppLauncher (aLauncher); /* < 1.8 */
return helperAppLauncher.SaveToDisk (0, 0);
}
int PromptForSaveToFile (long /*int*/ arg0, long /*int*/ arg1, long /*int*/ arg2, long /*int*/ arg3, long /*int*/ arg4) {
long /*int*/ aDefaultFile, aSuggestedFileExtension, _retval;
boolean hasLauncher = false;
/*
* The interface for nsIHelperAppLauncherDialog changed as of mozilla 1.5 when an
* extra argument was added to the PromptForSaveToFile method (this resulted in all
* subsequent arguments shifting right). The workaround is to provide an XPCOMObject
* that fits the newer API, and to use the first argument's type to infer whether
* the old or new nsIHelperAppLauncherDialog interface is being used (and by extension
* the ordering of the arguments). In mozilla >= 1.5 the first argument is an
* nsIHelperAppLauncher.
*/
/*
* The interface for nsIHelperAppLauncher changed as of mozilla 1.8, so the first
* argument must be queried for both the old and new nsIHelperAppLauncher interfaces.
*/
boolean using_1_8 = false;
nsISupports support = new nsISupports (arg0);
long /*int*/[] result = new long /*int*/[1];
int rc = support.QueryInterface (nsIHelperAppLauncher_1_8.NS_IHELPERAPPLAUNCHER_IID, result);
if (rc == XPCOM.NS_OK) {
using_1_8 = true;
hasLauncher = true;
new nsISupports (result[0]).Release ();
} else {
result[0] = 0;
rc = support.QueryInterface (nsIHelperAppLauncher.NS_IHELPERAPPLAUNCHER_IID, result);
if (rc == XPCOM.NS_OK) {
hasLauncher = true;
new nsISupports (result[0]).Release ();
}
}
result[0] = 0;
if (hasLauncher) { /* >= 1.5 */
aDefaultFile = arg2;
aSuggestedFileExtension = arg3;
_retval = arg4;
} else { /* 1.4 */
aDefaultFile = arg1;
aSuggestedFileExtension = arg2;
_retval = arg3;
}
int length = XPCOM.strlen_PRUnichar (aDefaultFile);
char[] dest = new char[length];
XPCOM.memmove (dest, aDefaultFile, length * 2);
String defaultFile = new String (dest);
length = XPCOM.strlen_PRUnichar (aSuggestedFileExtension);
dest = new char[length];
XPCOM.memmove (dest, aSuggestedFileExtension, length * 2);
String suggestedFileExtension = new String (dest);
Shell shell = new Shell ();
FileDialog fileDialog = new FileDialog (shell, SWT.SAVE);
fileDialog.setFileName (defaultFile);
fileDialog.setFilterExtensions (new String[] {suggestedFileExtension});
String name = fileDialog.open ();
shell.close ();
if (name == null) {
if (hasLauncher) {
if (using_1_8) {
nsIHelperAppLauncher_1_8 launcher = new nsIHelperAppLauncher_1_8 (arg0);
rc = launcher.Cancel (XPCOM.NS_BINDING_ABORTED);
} else {
nsIHelperAppLauncher launcher = new nsIHelperAppLauncher (arg0);
rc = launcher.Cancel ();
}
if (rc != XPCOM.NS_OK) Mozilla.error (rc);
return XPCOM.NS_OK;
}
return XPCOM.NS_ERROR_FAILURE;
}
nsEmbedString path = new nsEmbedString (name);
rc = XPCOM.NS_NewLocalFile (path.getAddress (), 1, result);
path.dispose ();
if (rc != XPCOM.NS_OK) Mozilla.error (rc);
if (result[0] == 0) Mozilla.error (XPCOM.NS_ERROR_NULL_POINTER);
/* Our own nsIDownload has been registered during the Browser initialization. It will be invoked by Mozilla. */
XPCOM.memmove (_retval, result, C.PTR_SIZEOF);
return XPCOM.NS_OK;
}
}
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