Diff for /chimera/BookmarksService.mm between versions 1.7 and 1.20

version 1.7, 2002/02/09 23:17:02 version 1.20, 2002/04/14 21:41:21
Line 1 Line 1
/*/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 *  BookmarksService.cpp/* ***** BEGIN LICENSE BLOCK *****
 *  Chimera * Version: NPL 1.1/GPL 2.0/LGPL 2.1
  *   *
 *  Created by David Hyatt on Thu Feb 07 2002. * The contents of this file are subject to the Netscape Public License
 *  Copyright (c) 2001 __MyCompanyName__. All rights reserved. * 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):
  * 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 ***** */
 #import "NSBrowserView.h"  #import "NSBrowserView.h"
 #include "BookmarksService.h"  #include "BookmarksService.h"
Line 32 Line 60
 {  {
     [super init];      [super init];
     mBookmarks = nsnull;      mBookmarks = nsnull;
       mCachedParent = nsnull;
       mCachedHref = nil;
     return self;      return self;
 }  }
Line 63 Line 93
 -(IBAction)addBookmark:(id)aSender  -(IBAction)addBookmark:(id)aSender
 {  {
    if (!mBookmarks)  [self addBookmark: aSender useSelection: YES];
    nsCOMPtr<nsIContent> content;-(void)addBookmark:(id)aSender useSelection:(BOOL)aUseSel
   if (!mBookmarks)
   nsCOMPtr<nsIContent> content;
   if (aUseSel) {
     int index = [mOutlineView selectedRow];      int index = [mOutlineView selectedRow];
     if (index >= 0) {      if (index >= 0) {
        BookmarkItem* item = [mOutlineView itemAtRow: index];      BookmarkItem* item = [mOutlineView itemAtRow: index];
        if ([mOutlineView isExpandable: item])       if ([mOutlineView isExpandable: item])
            content = [item contentNode];        content = [item contentNode];
     }      }
    if (!content)
        mBookmarks->GetRootContent(getter_AddRefs(content));  if (!content)
    nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(mBookmarks->gBookmarks));
    nsCOMPtr<nsIDOMElement> elt;  nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(mBookmarks->gBookmarks));
                            NS_LITERAL_STRING("bookmark"),   // Fetch the title of the current page and the URL.
                            getter_AddRefs(elt));  nsCOMPtr<nsIWebBrowser> webBrowser = getter_AddRefs([[[mBrowserWindowController getMyBrowserView] getBrowserView] getWebBrowser]);
      nsCOMPtr<nsIDOMWindow> window;
    // Fetch the title of the current page and the URL.  webBrowser->GetContentDOMWindow(getter_AddRefs(window));
    nsCOMPtr<nsIWebBrowser> webBrowser = getter_AddRefs([[mBrowserView getBrowserView] getWebBrowser]);  nsCOMPtr<nsIDOMDocument> htmlDoc;
    nsCOMPtr<nsIDOMWindow> window;  window->GetDocument(getter_AddRefs(htmlDoc));
    webBrowser->GetContentDOMWindow(getter_AddRefs(window));  nsCOMPtr<nsIDocument> pageDoc(do_QueryInterface(htmlDoc));
    nsCOMPtr<nsIDOMDocument> htmlDoc;
    window->GetDocument(getter_AddRefs(htmlDoc));  nsAutoString href;
    nsCOMPtr<nsIDocument> pageDoc(do_QueryInterface(htmlDoc));  if (pageDoc) {
        nsCOMPtr<nsIURI> url;
    nsAutoString href;     pageDoc->GetDocumentURL(getter_AddRefs(url));
    if (pageDoc) {    nsCAutoString spec;
        nsCOMPtr<nsIURI> url;    url->GetSpec(spec);
        pageDoc->GetDocumentURL(getter_AddRefs(url));    href.AssignWithConversion(spec.get());
        nsXPIDLCString spec;  }
        href.AssignWithConversion(spec.get());  mCachedHref = [NSString stringWithCharacters: href.get() length: nsCRT::strlen(href.get())];
    }  [mCachedHref retain];
    nsAutoString title;  mCachedParent = content;
    nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(htmlDoc));  
    if (htmlDocument)  nsAutoString title;
        htmlDocument->GetTitle(title);  nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(htmlDoc));
    if (title.IsEmpty())  if (htmlDocument)
        title = href;    htmlDocument->GetTitle(title);
          if (title.IsEmpty())
    elt->SetAttribute(NS_LITERAL_STRING("name"), title);    title = href;
    elt->SetAttribute(NS_LITERAL_STRING("href"), href);      
      NSTextField* textField = [mBrowserWindowController getAddBookmarkTitle];
    nsCOMPtr<nsIDOMElement> parent(do_QueryInterface(content));  [textField setStringValue: [NSString stringWithCharacters: title.get() length: nsCRT::strlen(title.get())]];
    nsCOMPtr<nsIDOMNode> dummy;
    parent->AppendChild(elt, getter_AddRefs(dummy));  [mBrowserWindowController cacheBookmarkDS: self];
   [NSApp beginSheet:    [mBrowserWindowController getAddBookmarkSheetWindow]
      modalForWindow:    [mBrowserWindowController window]
       modalDelegate:    nil //self
      didEndSelector:    nil //@selector(sheetDidEnd:)
         contextInfo:    nil];
 -(void)endAddBookmark: (int)aCode
   if (aCode == 0)
   const char* titleC = [[[mBrowserWindowController getAddBookmarkTitle] stringValue] cString];
   nsAutoString title; title.AssignWithConversion(titleC);
    mBookmarks->NotifyObservers(content, PR_TRUE);  nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(mBookmarks->gBookmarks));
   nsCOMPtr<nsIDOMElement> elt;
   elt->SetAttribute(NS_LITERAL_STRING("name"), title);
   nsAutoString href; href.AssignWithConversion([mCachedHref cString]);
   [mCachedHref release];
   elt->SetAttribute(NS_LITERAL_STRING("href"), href);
   nsCOMPtr<nsIDOMElement> parent(do_QueryInterface(mCachedParent));
   nsCOMPtr<nsIDOMNode> dummy;
   parent->AppendChild(elt, getter_AddRefs(dummy));
   nsCOMPtr<nsIContent> childContent(do_QueryInterface(elt));
   mBookmarks->BookmarkAdded(mCachedParent, childContent);
 }  }
 -(IBAction)deleteBookmark: (id)aSender  -(IBAction)deleteBookmark: (id)aSender
Line 132 Line 200
     nsCOMPtr<nsIDOMElement> child(do_QueryInterface(content));      nsCOMPtr<nsIDOMElement> child(do_QueryInterface(content));
     nsCOMPtr<nsIDOMNode> parent;      nsCOMPtr<nsIDOMNode> parent;
     child->GetParentNode(getter_AddRefs(parent));      child->GetParentNode(getter_AddRefs(parent));
       nsCOMPtr<nsIContent> parentContent(do_QueryInterface(parent));
     nsCOMPtr<nsIDOMNode> dummy;      nsCOMPtr<nsIDOMNode> dummy;
     parent->RemoveChild(child, getter_AddRefs(dummy));      parent->RemoveChild(child, getter_AddRefs(dummy));
    nsCOMPtr<nsIContent> parentContent(do_QueryInterface(parent));    mBookmarks->BookmarkRemoved(parentContent, content);
    mBookmarks->NotifyObservers(parentContent, PR_TRUE); 
     int total = [mOutlineView numberOfRows];      int total = [mOutlineView numberOfRows];
     if (index == total)      if (index == total)
Line 167 Line 235
         if (!href.IsEmpty()) {          if (!href.IsEmpty()) {
             nsCAutoString cstr; cstr.AssignWithConversion(href);              nsCAutoString cstr; cstr.AssignWithConversion(href);
             NSString* url = [NSString stringWithCString: cstr.get()];              NSString* url = [NSString stringWithCString: cstr.get()];
            [[mBrowserView getBrowserView] loadURI:[NSURL URLWithString: url] flags:NSLoadFlagsNone];            [[[mBrowserWindowController getMyBrowserView] getBrowserView] loadURI:[NSURL URLWithString: url] flags:NSLoadFlagsNone];
             // Focus and activate our content area.
             [[[mBrowserWindowController getMyBrowserView] getBrowserView] setActive: YES];
         }          }
     }       } 
 }  }
   - (BOOL)outlineView:(NSOutlineView *)outlineView shouldEditTableColumn:(NSTableColumn *)tableColumn item:(id)item
       return NO;
 - (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item  - (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item
 {  {
     if (!mBookmarks)      if (!mBookmarks)
Line 222 Line 297
 - (id)outlineView:(NSOutlineView *)outlineView objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item  - (id)outlineView:(NSOutlineView *)outlineView objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
 {  {
    if (!item)    NSString                                    *columnName = [tableColumn identifier];
        return nil;    NSMutableAttributedString       *cellValue = [[NSMutableAttributedString alloc] init];
        NSFileWrapper                               *fileWrapper = [[NSFileWrapper alloc] initRegularFileWithContents:nil];
    NSString* columnName = [tableColumn identifier];    NSTextAttachment                    *textAttachment = [[NSTextAttachment alloc] initWithFileWrapper:fileWrapper];
          NSMutableAttributedString   *attachmentAttrString = nil;
     NSCell                                              *attachmentAttrStringCell;
     if ([columnName isEqualToString: @"name"]) {      if ([columnName isEqualToString: @"name"]) {
         nsIContent* content = [item contentNode];          nsIContent* content = [item contentNode];
         nsAutoString nameAttr;          nsAutoString nameAttr;
         content->GetAttr(kNameSpaceID_None, BookmarksService::gNameAtom, nameAttr);          content->GetAttr(kNameSpaceID_None, BookmarksService::gNameAtom, nameAttr);
         nsCAutoString cStr; cStr.AssignWithConversion(nameAttr);          nsCAutoString cStr; cStr.AssignWithConversion(nameAttr);
        return [NSString stringWithCString: cStr.get()];        
         //Set cell's textual contents
         [cellValue replaceCharactersInRange:NSMakeRange(0, [cellValue length])
                                  withString:[NSString stringWithCString: cStr.get()]];
         //Create an attributed string to hold the empty attachment, then release the components.
         attachmentAttrString = [[NSMutableAttributedString attributedStringWithAttachment:textAttachment] retain];
         [textAttachment release];
         [fileWrapper release];
         //Get the cell of the text attachment.
         attachmentAttrStringCell = (NSCell *)[(NSTextAttachment *)[attachmentAttrString attribute:NSAttachmentAttributeName
                                                                                    effectiveRange:nil] attachmentCell];
         //Figure out which image to add, and set the cell's image.
         if ( [self outlineView:outlineView isItemExpandable:item] ) {
             [attachmentAttrStringCell setImage:[NSImage imageNamed:@"folder"]];
         } else {
             [attachmentAttrStringCell setImage:[NSImage imageNamed:@"smallbookmark"]];
         //Insert the image
         [cellValue replaceCharactersInRange:NSMakeRange(0, 0) withAttributedString:attachmentAttrString];
         //Tweak the baseline to vertically center the text.
         [cellValue addAttribute:NSBaselineOffsetAttributeName
                           value:[NSNumber numberWithFloat:-3.0]
                           range:NSMakeRange(0, 1)];
     }      }
        return cellValue;
    return nil; 
 }  }
 - (void)outlineView:(NSOutlineView *)outlineView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn byItem:(id)item  - (void)outlineView:(NSOutlineView *)outlineView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
Line 301  StripWhitespaceNodes(nsIContent* aElemen Line 403  StripWhitespaceNodes(nsIContent* aElemen
 PRUint32 BookmarksService::gRefCnt = 0;  PRUint32 BookmarksService::gRefCnt = 0;
 nsIDocument* BookmarksService::gBookmarks = nsnull;  nsIDocument* BookmarksService::gBookmarks = nsnull;
 NSMutableDictionary* BookmarksService::gDictionary = nil;  NSMutableDictionary* BookmarksService::gDictionary = nil;
NSMutableDictionary* BookmarksService::gBookmarkToMenuMap = nil;MainController* BookmarksService::gMainController = nil;
NSMutableDictionary* BookmarksService::gMenuToBookmarkMap = nil;NSMenu* BookmarksService::gBookmarksMenu = nil;
 nsIAtom* BookmarksService::gFolderAtom = nsnull;  nsIAtom* BookmarksService::gFolderAtom = nsnull;
 nsIAtom* BookmarksService::gBookmarkAtom = nsnull;  nsIAtom* BookmarksService::gBookmarkAtom = nsnull;
 nsIAtom* BookmarksService::gHrefAtom = nsnull;  nsIAtom* BookmarksService::gHrefAtom = nsnull;
Line 351  BookmarksService::GetWrapperFor(nsIConte Line 453  BookmarksService::GetWrapperFor(nsIConte
     return item;      return item;
 }  }
   BookmarksService::LocateMenu(nsIContent* aContent)
     nsCOMPtr<nsIContent> parent;
     if (!parent)
       return BookmarksService::gBookmarksMenu;
     NSMenu* parentMenu = LocateMenu(parent);
     PRUint32 contentID;
     NSMenuItem* childMenu = [parentMenu itemWithTag: contentID];
     return [childMenu menu];
 void  void
BookmarksService::NotifyObservers(nsIContent* aContainer, PRBool aReloadChildren)BookmarksService::BookmarkAdded(nsIContent* aContainer, nsIContent* aChild)
 {  {
    if (!gInstances)  if (!gInstances || !gDictionary)
        return;    return;
    PRInt32 count = gInstances->Count();  PRInt32 count = gInstances->Count();
    for (PRInt32 i = 0; i < count; i++) {  for (PRInt32 i = 0; i < count; i++) {
        BookmarksService* instance = (BookmarksService*)gInstances->ElementAt(i);    BookmarksService* instance = (BookmarksService*)gInstances->ElementAt(i);
        instance->NotifyObserver(aContainer, aReloadChildren);
     if (instance->mDataSource) {
       // We're a tree view.
       nsCOMPtr<nsIContent> parent;
       BookmarkItem* item = nil;
       if (parent)
         // We're not the root.
         item = GetWrapperFor(aContainer);
       [(instance->mDataSource) reloadDataForItem: item reloadChildren: YES];
     }      }
        else {
    FlushBookmarks();      // We're the menu.
       PRInt32 index = -1;
       aChild->IndexOf(aContainer, index);
       NSMenu* menu = LocateMenu(aContainer);
       AddMenuBookmark(menu, aContainer, aChild, index);
 }  }
 void  void
BookmarksService::NotifyObserver(nsIContent* aContainer, PRBool aReloadChildren)BookmarksService::BookmarkChanged(nsIContent* aItem)
 {  {
    if (!gDictionary)  if (!gInstances || !gDictionary)
        return;    return;
   PRInt32 count = gInstances->Count();
   for (PRInt32 i = 0; i < count; i++) {
     BookmarksService* instance = (BookmarksService*)gInstances->ElementAt(i);
    nsCOMPtr<nsIContent> parent;    if (instance->mDataSource) {
    aContainer->GetParent(*getter_AddRefs(parent));      BookmarkItem* item = GetWrapperFor(aItem);
          [(instance->mDataSource) reloadDataForItem: item reloadChildren: NO];
    BookmarkItem* item = nil;    }
    if (parent)  }
 BookmarksService::BookmarkRemoved(nsIContent* aContainer, nsIContent* aChild)
   if (!gInstances)
   PRInt32 count = gInstances->Count();
   for (PRInt32 i = 0; i < count; i++) {
     BookmarksService* instance = (BookmarksService*)gInstances->ElementAt(i);
     if (instance->mDataSource) {
       // We're a tree view.
       nsCOMPtr<nsIContent> parent;
       BookmarkItem* item = nil;
       if (parent)
         // We're not the root.          // We're not the root.
         item = GetWrapperFor(aContainer);          item = GetWrapperFor(aContainer);
    [mDataSource reloadDataForItem: item reloadChildren: aReloadChildren];      [(instance->mDataSource) reloadDataForItem: item reloadChildren: YES];
     else {
       // We're the menu.
       NSMenu* menu = LocateMenu(aContainer);
       PRUint32 contentID;
       NSMenuItem* childItem = [menu itemWithTag: contentID];
       [menu removeItem: childItem];
 }  }
 void  void
Line 394  BookmarksService::AddObserver() Line 568  BookmarksService::AddObserver()
         gNameAtom = NS_NewAtom("name");          gNameAtom = NS_NewAtom("name");
         gHrefAtom = NS_NewAtom("href");          gHrefAtom = NS_NewAtom("href");
         gInstances = new nsVoidArray();          gInstances = new nsVoidArray();
         nsCOMPtr<nsIFile> profileDir;          nsCOMPtr<nsIFile> profileDir;
         NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(profileDir));          NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(profileDir));
         profileDir->Append("bookmarks.xml");          profileDir->Append("bookmarks.xml");
        nsXPIDLCString bookmarksFileURL;        nsCAutoString bookmarksFileURL;
        NS_GetURLSpecFromFile(profileDir, getter_Copies(bookmarksFileURL));        NS_GetURLSpecFromFile(profileDir, bookmarksFileURL);
         nsCOMPtr<nsIURI> uri;          nsCOMPtr<nsIURI> uri;
         NS_NewURI(getter_AddRefs(uri), bookmarksFileURL.get());          NS_NewURI(getter_AddRefs(uri), bookmarksFileURL.get());
Line 432  BookmarksService::RemoveObserver() Line 606  BookmarksService::RemoveObserver()
         NS_RELEASE(gNameAtom);          NS_RELEASE(gNameAtom);
         NS_RELEASE(gHrefAtom);          NS_RELEASE(gHrefAtom);
         [gDictionary release];          [gDictionary release];
         [gBookmarkToMenuMap release];  
         [gMenuToBookmarkMap release];  
     }      }
 }  }
Line 456  BookmarksService::FlushBookmarks() Line 628  BookmarksService::FlushBookmarks()
 void  void
 BookmarksService::ConstructBookmarksMenu(NSMenu* aMenu, nsIContent* aContent)  BookmarksService::ConstructBookmarksMenu(NSMenu* aMenu, nsIContent* aContent)
 {  {
     // Create our menu maps.  
     if (!gMenuToBookmarkMap)  
         gMenuToBookmarkMap = [[NSMutableDictionary alloc] initWithCapacity: 30];  
     if (!gBookmarkToMenuMap)  
         gBookmarkToMenuMap = [[NSMutableDictionary alloc] initWithCapacity: 30];  
     nsCOMPtr<nsIContent> content = aContent;      nsCOMPtr<nsIContent> content = aContent;
     if (!content) {      if (!content) {
         GetRootContent(getter_AddRefs(content));          GetRootContent(getter_AddRefs(content));
        // Add the root entry to our maps.        GetWrapperFor(content);
        BookmarkItem* item = GetWrapperFor(content);        gBookmarksMenu = aMenu;
        [gMenuToBookmarkMap setObject: item forKey: aMenu]; 
        [gBookmarkToMenuMap setObject: aMenu forKey: item]; 
     }      }
     // Now walk our children, and for folders also recur into them.      // Now walk our children, and for folders also recur into them.
Line 476  BookmarksService::ConstructBookmarksMenu Line 640  BookmarksService::ConstructBookmarksMenu
     content->ChildCount(childCount);      content->ChildCount(childCount);
     for (PRInt32 i = 0; i < childCount; i++) {      for (PRInt32 i = 0; i < childCount; i++) {
        nsCOMPtr<nsIContent> child;      nsCOMPtr<nsIContent> child;
        content->ChildAt(i, *getter_AddRefs(child));      content->ChildAt(i, *getter_AddRefs(child));
              AddMenuBookmark(aMenu, content, child, -1);
        // Obtain our name attribute. 
        nsAutoString name; 
        child->GetAttr(kNameSpaceID_None, gNameAtom, name); 
        nsCAutoString nameCStr; nameCStr.AssignWithConversion(name); 
        NSString* title = [NSString stringWithCString: nameCStr.get()]; 
        // Create a menu or menu item for the child. 
        nsCOMPtr<nsIAtom> tag; 
        if (tag == gFolderAtom) { 
            // We are building a menu. 
            NSMenu* menu = [[[NSMenu alloc] initWithTitle: title] autorelease]; 
            BookmarkItem* item = GetWrapperFor(child); 
            [gMenuToBookmarkMap setObject: item forKey: menu]; 
            [gBookmarkToMenuMap setObject: menu forKey: item]; 
            [aMenu addItem: menu]; 
            ConstructBookmarksMenu(menu, child); 
        else { 
            // We are building a menu item. 
            NSMenuItem* menuItem = [[[NSMenuItem alloc] initWithTitle: title action: NULL keyEquivalent: @""] autorelease]; 
            BookmarkItem* item = GetWrapperFor(child); 
            [gMenuToBookmarkMap setObject: item forKey: menuItem]; 
            [gBookmarkToMenuMap setObject: menuItem forKey: item]; 
            [aMenu addItem: menuItem]; 
     }      }
 }  }
   BookmarksService::AddMenuBookmark(NSMenu* aMenu, nsIContent* aParent, nsIContent* aChild, PRInt32 aIndex)
     nsAutoString name;
     aChild->GetAttr(kNameSpaceID_None, gNameAtom, name);
     nsCAutoString nameCStr; nameCStr.AssignWithConversion(name);
     NSString* title = [NSString stringWithCString: nameCStr.get()];
     // Create a menu or menu item for the child.
     NSMenuItem* menuItem = [[[NSMenuItem alloc] initWithTitle: title action: NULL keyEquivalent: @""] autorelease];
     if (aIndex == -1)
       [aMenu addItem: menuItem];
       [aMenu insertItem: menuItem atIndex: aIndex];
     nsCOMPtr<nsIAtom> tagName;
     if (tagName == gFolderAtom) {
       NSMenu* menu = [[[NSMenu alloc] initWithTitle: title] autorelease];
       [aMenu setSubmenu: menu forItem: menuItem];
       [menu setAutoenablesItems: NO];
       ConstructBookmarksMenu(menu, aChild);
     else {
       [menuItem setTarget: gMainController];
       [menuItem setAction: @selector(openMenuBookmark:)];
     PRUint32 contentID;
     [menuItem setTag: contentID];
   BookmarksService::OpenMenuBookmark(BrowserWindowController* aController, id aMenuItem)
       // Get the corresponding bookmark item.
       BookmarkItem* item = [gDictionary objectForKey: [NSNumber numberWithInt: [aMenuItem tag]]];
       // Get the content node.
       nsIContent* content = [item contentNode];
       // Get the href attribute.  This is the URL we want to load.
       nsAutoString href;
       content->GetAttr(kNameSpaceID_None, gHrefAtom, href);
       nsCAutoString cref; cref.AssignWithConversion(href);
       if (cref.IsEmpty())
       NSString* url = [NSString stringWithCString: cref.get()];
       // Now load the URL in the window.
       [aController loadURL:[NSURL URLWithString: url]];
       // Focus and activate our content area.
       [[[aController getMyBrowserView] getBrowserView] setActive: YES];

Removed from v.1.7  
changed lines
  Added in v.1.20

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