Annotation of chimera/ContentClickListener.mm, revision 1.3

1.1       hyatt       1: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
                      2: /* ***** BEGIN LICENSE BLOCK *****
                      3:  * Version: NPL 1.1/GPL 2.0/LGPL 2.1
                      4:  *
                      5:  * The contents of this file are subject to the Netscape Public License
                      6:  * Version 1.1 (the "License"); you may not use this file except in
                      7:  * compliance with the License. You may obtain a copy of the License at
                      8:  * http://www.mozilla.org/NPL/
                      9:  *
                     10:  * Software distributed under the License is distributed on an "AS IS" basis,
                     11:  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
                     12:  * for the specific language governing rights and limitations under the
                     13:  * License.
                     14:  *
                     15:  * The Original Code is mozilla.org code.
                     16:  *
                     17:  * The Initial Developer of the Original Code is 
                     18:  * Netscape Communications Corporation.
                     19:  * Portions created by the Initial Developer are Copyright (C) 2002
                     20:  * the Initial Developer. All Rights Reserved.
                     21:  *
                     22:  * Contributor(s):
                     23:  *
                     24:  * Alternatively, the contents of this file may be used under the terms of
                     25:  * either the GNU General Public License Version 2 or later (the "GPL"), or 
                     26:  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
                     27:  * in which case the provisions of the GPL or the LGPL are applicable instead
                     28:  * of those above. If you wish to allow use of your version of this file only
                     29:  * under the terms of either the GPL or the LGPL, and not to allow others to
                     30:  * use your version of this file under the terms of the NPL, indicate your
                     31:  * decision by deleting the provisions above and replace them with the notice
                     32:  * and other provisions required by the GPL or the LGPL. If you do not delete
                     33:  * the provisions above, a recipient may use your version of this file under
                     34:  * the terms of any one of the NPL, the GPL or the LGPL.
                     35:  *
                     36:  * ***** END LICENSE BLOCK ***** */
                     37: 
                     38: #include "nsCOMPtr.h"
                     39: #include "ContentClickListener.h"
1.2       hyatt      40: #include "nsIDOMEventTarget.h"
                     41: #include "nsIContent.h"
                     42: #include "nsIAtom.h"
                     43: #include "nsIDOMElement.h"
                     44: #include "nsString.h"
                     45: #include "nsUnicharUtils.h"
1.3     ! hyatt      46: #include "nsIPrefBranch.h"
        !            47: #include "nsIDOMMouseEvent.h"
        !            48: #include "nsEmbedAPI.h"
        !            49: #include "nsIDOMHTMLAnchorElement.h"
        !            50: #include "nsIDOMHTMLAreaElement.h"
        !            51: #include "nsIDOMHTMLLinkElement.h"
1.1       hyatt      52: 
                     53: NS_IMPL_ISUPPORTS2(ContentClickListener, nsIDOMMouseListener, nsIDOMEventListener);
                     54: 
                     55: ContentClickListener::ContentClickListener(id aBrowserController)
                     56: :mBrowserController(aBrowserController)
                     57: {
                     58:   NS_INIT_ISUPPORTS();
                     59: }
                     60: 
                     61: ContentClickListener::~ContentClickListener()
                     62: {
                     63: 
                     64: }
                     65: 
                     66: NS_IMETHODIMP
                     67: ContentClickListener::MouseClick(nsIDOMEvent* aEvent)
                     68: {
1.2       hyatt      69:   nsCOMPtr<nsIDOMEventTarget> target;
                     70:   aEvent->GetTarget(getter_AddRefs(target));
                     71:   if (!target)
                     72:     return NS_OK;
                     73:   nsCOMPtr<nsIDOMElement> content(do_QueryInterface(target));
                     74:   nsAutoString localName;
                     75:   if (content)
                     76:     content->GetLocalName(localName);
                     77:   
1.3     ! hyatt      78:   nsCOMPtr<nsIDOMElement> linkContent;
1.2       hyatt      79:   ToLowerCase(localName);
1.3     ! hyatt      80:   nsAutoString href;
        !            81:   if (localName.Equals(NS_LITERAL_STRING("a")) ||
        !            82:       localName.Equals(NS_LITERAL_STRING("area")) ||
        !            83:       localName.Equals(NS_LITERAL_STRING("link"))) {
        !            84:     PRBool hasAttr;
        !            85:     content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
        !            86:     if (hasAttr) {
        !            87:       linkContent = content;
        !            88:       nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(linkContent));
        !            89:       if (anchor)
        !            90:         anchor->GetHref(href);
        !            91:       else {
        !            92:         nsCOMPtr<nsIDOMHTMLAreaElement> area(do_QueryInterface(linkContent));
        !            93:         if (area)
        !            94:           area->GetHref(href);
        !            95:         else {
        !            96:           nsCOMPtr<nsIDOMHTMLLinkElement> link(do_QueryInterface(linkContent));
        !            97:           if (link)
        !            98:             link->GetHref(href);
        !            99:         }
        !           100:       }
        !           101:     }
        !           102:   }
        !           103:   else {
        !           104:     // XXXdwh Handle prefilling of forms (input fields) on a click.
        !           105:     nsCOMPtr<nsIDOMNode> curr(do_QueryInterface(target));
        !           106:     nsCOMPtr<nsIDOMNode> temp = curr;
        !           107:     temp->GetParentNode(getter_AddRefs(curr));
        !           108:     while (curr) {
        !           109:       content = do_QueryInterface(curr);
        !           110:       if (!content)
        !           111:         break;
        !           112:       content->GetLocalName(localName);
        !           113:       ToLowerCase(localName);
        !           114:       if (localName.Equals(NS_LITERAL_STRING("a"))) {
        !           115:         PRBool hasAttr;
        !           116:         content->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
        !           117:         if (hasAttr) {
        !           118:           linkContent = content;
        !           119:           nsCOMPtr<nsIDOMHTMLAnchorElement> anchor(do_QueryInterface(linkContent));
        !           120:           if (anchor)
        !           121:             anchor->GetHref(href);
        !           122:         }
        !           123:         else
        !           124:           linkContent = nsnull; // Links can't be nested.
        !           125:         break;
        !           126:       }
        !           127:       
        !           128:       temp = curr;
        !           129:       temp->GetParentNode(getter_AddRefs(curr));
        !           130:     }
        !           131:   }
1.2       hyatt     132:   
1.3     ! hyatt     133:   // XXXdwh Handle simple XLINKs if we want to be compatible with Mozilla, but who
        !           134:   // really uses these anyway? :)
        !           135:   if (!linkContent || href.IsEmpty())
        !           136:     return NS_OK;
        !           137: 
        !           138:   NSString* hrefStr = [NSString stringWithCharacters: href.get() length:nsCRT::strlen(href.get())];
        !           139:   NSURL* urlToLoad = [NSURL URLWithString: hrefStr];
1.2       hyatt     140:   
1.3     ! hyatt     141:   nsCOMPtr<nsIPrefBranch> pref(do_GetService("@mozilla.org/preferences-service;1"));
        !           142:   if (!pref)
        !           143:     return NS_OK; // Something bad happened if we can't get prefs.
        !           144:     
        !           145:   PRUint16 button;
        !           146:   nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aEvent));
        !           147:   mouseEvent->GetButton(&button);
        !           148:   switch (button) {
        !           149:     case 0: {
        !           150:       PRBool metaKey, shiftKey;
        !           151:       mouseEvent->GetMetaKey(&metaKey);
        !           152:       mouseEvent->GetShiftKey(&shiftKey);
        !           153:       if (metaKey) {
        !           154:         // The command key is down.  Open the link in a new window or tab.
        !           155:         PRBool useTab;
        !           156:         pref->GetBoolPref("browser.tabs.opentabfor.middleclick", &useTab);
        !           157:         PRBool loadInBackground;
        !           158:         pref->GetBoolPref("browser.tabs.loadInBackground", &loadInBackground);
        !           159:         if (shiftKey)
        !           160:           loadInBackground = !loadInBackground;
        !           161:         if (useTab) {
        !           162:           
        !           163:         }
        !           164:         else
        !           165:           [mBrowserController openNewWindowWithURL: urlToLoad loadInBackground: loadInBackground];
        !           166:       }
        !           167:     }
        !           168:   }
        !           169:     
1.1       hyatt     170:   return NS_OK;
                    171: }

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