gecko-dev/camino/ContentClickListener.mm

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* David Hyatt <hyatt@netscape.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsCOMPtr.h"
#include "ContentClickListener.h"
#include "nsIDOMEventTarget.h"
#include "nsIContent.h"
#include "nsIAtom.h"
#include "nsIDOMElement.h"
#include "nsString.h"
#include "nsUnicharUtils.h"
#include "nsIPrefBranch.h"
#include "nsIDOMMouseEvent.h"
#include "nsEmbedAPI.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentEvent.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMNSHTMLElement.h"
#include "nsIDOMHTMLSelectElement.h"
#include "nsIDOMHTMLOptionElement.h"
#include "nsIDOMHTMLCollection.h"
#include "nsIDOMWindow.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIFrame.h"
#include "nsIView.h"
#include "nsIWidget.h"
// Common helper routines (also used by the context menu code)
#include "CHGeckoUtils.h"
#import "CHBrowserView.h"
static void FindOptionWithContentID(nsIDOMHTMLSelectElement* aSel, PRUint32 aID, nsIDOMHTMLOptionElement** aResult)
{
*aResult = nsnull;
nsCOMPtr<nsIDOMHTMLCollection> options;
aSel->GetOptions(getter_AddRefs(options));
PRUint32 count;
options->GetLength(&count);
for (PRUint32 i = 0; i < count; i++) {
nsCOMPtr<nsIDOMNode> node;
options->Item(i, getter_AddRefs(node));
PRUint32 contentID;
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
content->GetContentID(&contentID);
if (contentID == aID) {
nsCOMPtr<nsIDOMHTMLOptionElement> option(do_QueryInterface(node));
*aResult = option;
NS_ADDREF(*aResult);
break;
}
}
}
@interface CHOptionSelector : NSObject
{
nsIDOMHTMLSelectElement* mSelectElt;
}
-(id)initWithSelect:(nsIDOMHTMLSelectElement*)aSel;
-(IBAction)selectOption:(id)aSender;
@end
@implementation CHOptionSelector
-(id)initWithSelect:(nsIDOMHTMLSelectElement*)aSel
{
if (self = [super init]) {
mSelectElt = aSel;
}
return self;
}
-(IBAction)selectOption:(id)aSender
{
int tag = [aSender tag];
nsCOMPtr<nsIDOMHTMLOptionElement> optionElt;
FindOptionWithContentID(mSelectElt, tag, getter_AddRefs(optionElt));
optionElt->SetSelected(PR_TRUE);
[self autorelease]; // Free up ourselves.
[[aSender menu] autorelease]; // Free up the menu.
// Fire a DOM event for the title change.
nsCOMPtr<nsIDOMEvent> event;
nsCOMPtr<nsIDOMDocument> domDocument;
mSelectElt->GetOwnerDocument(getter_AddRefs(domDocument));
nsCOMPtr<nsIDOMDocumentEvent> docEvent(do_QueryInterface(domDocument));
docEvent->CreateEvent(NS_LITERAL_STRING("Events"), getter_AddRefs(event));
if (event) {
event->InitEvent(NS_LITERAL_STRING("change"), PR_TRUE, PR_TRUE);
PRBool noDefault;
nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(mSelectElt));
target->DispatchEvent(event, &noDefault);
}
}
@end
NS_IMPL_ISUPPORTS2(ContentClickListener, nsIDOMMouseListener, nsIDOMEventListener);
ContentClickListener::ContentClickListener(id aBrowserController)
:mBrowserController(aBrowserController)
{
NS_INIT_ISUPPORTS();
}
ContentClickListener::~ContentClickListener()
{
}
NS_IMETHODIMP
ContentClickListener::MouseDown(nsIDOMEvent* aEvent)
{
nsCOMPtr<nsIDOMEventTarget> target;
aEvent->GetTarget(getter_AddRefs(target));
if (!target)
return NS_OK;
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(target));
if (sel) {
NSMenu* menu = [[NSMenu alloc] init]; // Retain the menu.
nsCOMPtr<nsIDOMHTMLCollection> options;
sel->GetOptions(getter_AddRefs(options));
PRUint32 count;
options->GetLength(&count);
PRInt32 selIndex = 0;
for (PRUint32 i = 0; i < count; i++) {
nsCOMPtr<nsIDOMNode> node;
options->Item(i, getter_AddRefs(node));
PRUint32 contentID;
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
content->GetContentID(&contentID);
nsAutoString text;
nsCOMPtr<nsIDOMHTMLOptionElement> option(do_QueryInterface(node));
option->GetLabel(text);
if (text.IsEmpty())
option->GetText(text);
NSString* title = [NSString stringWithCharacters: text.get() length: nsCRT::strlen(text.get())];
NSMenuItem* menuItem = [[[NSMenuItem alloc] initWithTitle: title action: NULL keyEquivalent: @""] autorelease];
[menu addItem: menuItem];
[menuItem setTag: contentID];
PRBool selected;
option->GetSelected(&selected);
if (selected) {
[menuItem setState: NSOnState];
selIndex = i;
}
CHOptionSelector* optSelector = [[CHOptionSelector alloc] initWithSelect: sel];
[menuItem setTarget: optSelector];
[menuItem setAction: @selector(selectOption:)];
}
nsCOMPtr<nsIDOMNSHTMLElement> nsSel(do_QueryInterface(sel));
PRInt32 left, top, height;
PRInt32 clientX, clientY;
nsSel->GetOffsetLeft(&left);
nsSel->GetOffsetTop(&top);
nsSel->GetOffsetHeight(&height);
nsCOMPtr<nsIDOMElement> currOffsetParent;
nsSel->GetOffsetParent(getter_AddRefs(currOffsetParent));
while (currOffsetParent) {
nsCOMPtr<nsIDOMNSHTMLElement> currNS(do_QueryInterface(currOffsetParent));
PRInt32 currLeft, currTop;
currNS->GetOffsetLeft(&currLeft);
currNS->GetOffsetTop(&currTop);
left += currLeft;
top += currTop;
currNS->GetOffsetParent(getter_AddRefs(currOffsetParent));
}
nsCOMPtr<nsIDOMMouseEvent> msEvent(do_QueryInterface(aEvent));
msEvent->GetClientX(&clientX);
msEvent->GetClientY(&clientY);
PRInt32 xDelta = clientX - left;
PRInt32 yDelta = top + height - clientY;
nsCOMPtr<nsIDOMWindow> window = getter_AddRefs([[[mBrowserController getBrowserWrapper] getBrowserView] getContentWindow]);
PRInt32 scrollX, scrollY;
window->GetScrollX(&scrollX);
window->GetScrollY(&scrollY);
xDelta += scrollX; // Normal direction.
yDelta -= scrollY; // Remember, y is flipped.
#define XMENUOFFSET 20
#define MENUHEIGHT 20
xDelta += XMENUOFFSET;
yDelta -= MENUHEIGHT*(selIndex+1);
NSEvent* event = [NSApp currentEvent];
NSPoint point = [event locationInWindow];
point.x -= xDelta;
point.y -= yDelta;
NSEvent* mouseEvent = [NSEvent mouseEventWithType: NSLeftMouseDown location: point
modifierFlags: 0 timestamp: [event timestamp]
windowNumber: [event windowNumber] context: [event context]
eventNumber: [event eventNumber] clickCount: [event clickCount] pressure: [event pressure]];
[NSMenu popUpContextMenu: menu withEvent: mouseEvent forView: [[mBrowserController window] contentView]];
}
return NS_OK;
}
NS_IMETHODIMP
ContentClickListener::MouseClick(nsIDOMEvent* aEvent)
{
nsCOMPtr<nsIDOMEventTarget> target;
aEvent->GetTarget(getter_AddRefs(target));
if (!target)
return NS_OK;
nsCOMPtr<nsIDOMNode> content(do_QueryInterface(target));
nsCOMPtr<nsIDOMElement> linkContent;
nsAutoString href;
CHGeckoUtils::GetEnclosingLinkElementAndHref(content, getter_AddRefs(linkContent), href);
// XXXdwh Handle simple XLINKs if we want to be compatible with Mozilla, but who
// really uses these anyway? :)
if (!linkContent || href.IsEmpty())
return NS_OK;
nsCOMPtr<nsIPrefBranch> pref(do_GetService("@mozilla.org/preferences-service;1"));
if (!pref)
return NS_OK; // Something bad happened if we can't get prefs.
PRUint16 button;
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aEvent));
mouseEvent->GetButton(&button);
PRBool metaKey, shiftKey, altKey;
mouseEvent->GetMetaKey(&metaKey);
mouseEvent->GetShiftKey(&shiftKey);
mouseEvent->GetAltKey(&altKey);
NSString* hrefStr = [NSString stringWithCharacters: href.get() length:nsCRT::strlen(href.get())];
NSURL* linkURL = [NSURL URLWithString: hrefStr];
if ((metaKey && button == 0) || button == 1) {
// The command key is down or we got a middle click. Open the link in a new window or tab.
PRBool useTab;
pref->GetBoolPref("browser.tabs.opentabfor.middleclick", &useTab);
PRBool loadInBackground;
pref->GetBoolPref("browser.tabs.loadInBackground", &loadInBackground);
if (shiftKey)
loadInBackground = !loadInBackground;
if (useTab)
[mBrowserController openNewTabWithURL: linkURL loadInBackground: loadInBackground];
else
[mBrowserController openNewWindowWithURL: linkURL loadInBackground: loadInBackground];
}
else if (altKey) {
// The user wants to save this link.
nsAutoString text;
CHGeckoUtils::GatherTextUnder(content, text);
[mBrowserController saveURL: nil filterList: nil
url: linkURL suggestedFilename: [NSString stringWithCharacters: text.get()
length: nsCRT::strlen(text.get())]];
}
return NS_OK;
}