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gecko-dev/suite/browser/navigatorDD.js

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/* -*- Mode: Java; 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) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* - Kevin Puetz (puetzk@iastate.edu)
* - Ben Goodger <ben@netscape.com>
* - Blake Ross <blaker@netscape.com>
* - Pierre Chanial <pierrechanial@netscape.net>
*
* 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 ***** */
function _RDF(aType)
{
return "http://www.w3.org/1999/02/22-rdf-syntax-ns#" + aType;
}
function NC_RDF(aType)
{
return "http://home.netscape.com/NC-rdf#" + aType;
}
var RDFUtils = {
getResource: function(aString)
{
return this.rdf.GetResource(aString, true);
},
getTarget: function(aDS, aSourceID, aPropertyID)
{
var source = this.getResource(aSourceID);
var property = this.getResource(aPropertyID);
return aDS.GetTarget(source, property, true);
},
getValueFromResource: function(aResource)
{
aResource = aResource.QueryInterface(Components.interfaces.nsIRDFResource);
return aResource ? aResource.Value : null;
},
_rdf: null,
get rdf() {
if (!this._rdf) {
this._rdf = Components.classes["@mozilla.org/rdf/rdf-service;1"]
.getService(Components.interfaces.nsIRDFService);
}
return this._rdf;
}
}
var proxyIconDNDObserver = {
onDragStart: function (aEvent, aXferData, aDragAction)
{
var urlBar = document.getElementById("urlbar");
// XXX - do we want to allow the user to set a blank page to their homepage?
// if so then we want to modify this a little to set about:blank as
// the homepage in the event of an empty urlbar.
if (!urlBar.value) return;
var urlString = urlBar.value + "\n" + window._content.document.title;
var htmlString = "<a href=\"" + urlBar.value + "\">" + urlBar.value + "</a>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
aXferData.data.addDataForFlavour("text/unicode", urlBar.value);
aXferData.data.addDataForFlavour("text/html", htmlString);
}
}
var homeButtonObserver = {
onDragStart: function (aEvent, aXferData, aDragAction)
{
var homepage = nsPreferences.getLocalizedUnicharPref("browser.startup.homepage", "about:blank");
if (homepage)
{
// XXX find a readable title string for homepage, perhaps do a history lookup.
var htmlString = "<a href=\"" + homepage + "\">" + homepage + "</a>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("text/x-moz-url", homepage + "\n" + homepage);
aXferData.data.addDataForFlavour("text/html", htmlString);
aXferData.data.addDataForFlavour("text/unicode", homepage);
}
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var url = retrieveURLFromData(aXferData.data, aXferData.flavour.contentType);
setTimeout(openHomeDialog, 0, url);
},
onDragOver: function (aEvent, aFlavour, aDragSession)
{
var statusTextFld = document.getElementById("statusbar-display");
statusTextFld.label = gNavigatorBundle.getString("droponhomebutton");
aDragSession.dragAction = Components.interfaces.nsIDragService.DRAGDROP_ACTION_LINK;
},
onDragExit: function (aEvent, aDragSession)
{
var statusTextFld = document.getElementById("statusbar-display");
statusTextFld.label = "";
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
}
function openHomeDialog(aURL)
{
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
var promptTitle = gNavigatorBundle.getString("droponhometitle");
var promptMsg = gNavigatorBundle.getString("droponhomemsg");
var okButton = gNavigatorBundle.getString("droponhomeokbutton");
var pressedVal = promptService.confirmEx(window, promptTitle, promptMsg,
(promptService.BUTTON_TITLE_IS_STRING * promptService.BUTTON_POS_0) +
(promptService.BUTTON_TITLE_CANCEL * promptService.BUTTON_POS_1),
okButton, null, null, null, {value:0});
if (pressedVal == 0) {
nsPreferences.setUnicharPref("browser.startup.homepage", aURL);
setTooltipText("home-button", aURL);
}
}
var goButtonObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
aEvent.target.setAttribute("dragover", "true");
return true;
},
onDragExit: function (aEvent, aDragSession)
{
aEvent.target.removeAttribute("dragover");
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var uri = xferData[0] ? xferData[0] : xferData[1];
if (uri)
loadURI(uri);
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
}
var searchButtonObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
aEvent.target.setAttribute("dragover", "true");
return true;
},
onDragExit: function (aEvent, aDragSession)
{
aEvent.target.removeAttribute("dragover");
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var uri = xferData[1] ? xferData[1] : xferData[0];
if (uri)
OpenSearch('internet',false, uri);
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
}
var personalToolbarDNDObserver = {
////////////////////
// Public methods //
////////////////////
onDragStart: function (aEvent, aXferData, aDragAction)
{
// Prevent dragging from an invalid region
if (!this.canDrop(aEvent))
return;
// Prevent dragging out of menupopups on non Win32 platforms.
// a) on Mac drag from menus is generally regarded as being satanic
// b) on Linux, this causes an X-server crash, see bug 79003, 96504 and 139471
// c) on Windows, there is no hang or crash associated with this, so we'll leave
// the functionality there.
if (navigator.platform != "Win32" && aEvent.target.localName != "toolbarbutton")
return;
// prevent dragging folders in the personal toolbar and menus.
// PCH: under linux, since containers open on mouse down, we hit bug 96504.
// In addition, a drag start is fired when leaving an open toolbarbutton(type=menu)
// menupopup (see bug 143031)
if (this.isContainer(aEvent.target) && aEvent.target.getAttribute("group") != "true") {
if (this.isPlatformNotSupported)
return;
if (!aEvent.shiftKey && !aEvent.altKey)
return;
// menus open on mouse down
aEvent.target.firstChild.hidePopup();
}
// Prevent dragging non-bookmark menuitem or menus
var uri = aEvent.target.id;
if (!this.isBookmark(uri))
return;
//PCH: cleanup needed here, url is already calculated in isBookmark()
var db = document.getElementById("innermostBox").database;
var url = RDFUtils.getTarget(db, uri, NC_RDF("URL"));
if (url)
url = url.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
else
url = "";
var name = RDFUtils.getTarget(db, uri, NC_RDF("Name"));
if (name)
name = name.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
else
name = "";
var urlString = url + "\n" + name;
var htmlString = "<A HREF='" + url + "'>" + name + "</A>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("moz/rdfitem", uri);
aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
aXferData.data.addDataForFlavour("text/html", htmlString);
aXferData.data.addDataForFlavour("text/unicode", url);
return;
},
onDragOver: function(aEvent, aFlavour, aDragSession)
{
if (aDragSession.canDrop)
this.onDragSetFeedBack(aEvent);
if (this.isPlatformNotSupported)
return;
if (this.isTimerSupported)
return;
this.onDragOverCheckTimers();
return;
},
onDragEnter: function (aEvent, aDragSession)
{
var target = aEvent.target;
if (target.localName == "menupopup" || target.localName == "hbox")
target = target.parentNode;
if (aDragSession.canDrop) {
this.onDragSetFeedBack(aEvent);
this.onDragEnterSetTimer(target, aDragSession);
}
this.mCurrentDragOverTarget = target;
return;
},
onDragExit: function (aEvent, aDragSession)
{
var target = aEvent.target;
if (target.localName == "menupopup" || target.localName == "hbox")
target = target.parentNode;
this.onDragRemoveFeedBack(target);
this.onDragExitSetTimer(target, aDragSession);
this.mCurrentDragOverTarget = null;
return;
},
onDrop: function (aEvent, aXferData, aDragSession)
{
this.onDragRemoveFeedBack(aEvent.target);
var dropPosition = this.determineDropPosition(aEvent);
// PCH: BAD!!! We should use the flavor
// this code should be merged with the one in bookmarks.xml
var xferData = aXferData.data.split("\n");
if (xferData[0] == "")
return;
var elementRes = RDFUtils.getResource(xferData[0]);
var childDB = document.getElementById("innermostBox").database;
var rdfContainer = Components.classes["@mozilla.org/rdf/container;1"].createInstance(Components.interfaces.nsIRDFContainer);
// if dragged url is already bookmarked, remove it from current location first
var parentContainer = this.findParentContainer(aDragSession.sourceNode);
if (parentContainer) {
rdfContainer.Init(childDB, parentContainer);
rdfContainer.RemoveElement(elementRes, false);
}
// determine charset of link
var linkCharset = aDragSession.sourceDocument ? aDragSession.sourceDocument.characterSet : null;
// determine title of link
var linkTitle;
// look it up in bookmarks
var bookmarksDS = RDFUtils.rdf.GetDataSource("rdf:bookmarks");
var nameRes = RDFUtils.getResource(NC_RDF("Name"));
var nameFromBookmarks = bookmarksDS.GetTarget(elementRes, nameRes, true);
if (nameFromBookmarks)
nameFromBookmarks = nameFromBookmarks.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (nameFromBookmarks)
linkTitle = nameFromBookmarks.Value;
else if (xferData.length >= 2)
linkTitle = xferData[1]
else {
// look up this URL's title in global history
var historyDS = RDFUtils.rdf.GetDataSource("rdf:history");
var titlePropRes = RDFUtils.getResource(NC_RDF("Name"));
var titleFromHistory = historyDS.GetTarget(elementRes, titlePropRes, true);
if (titleFromHistory)
titleFromHistory = titleFromHistory.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (titleFromHistory)
linkTitle = titleFromHistory.Value;
}
var dropIndex;
if (aEvent.target.id == "bookmarks-button")
// dropPosition is always DROP_ON
parentContainer = RDFUtils.getResource("NC:BookmarksRoot");
else if (aEvent.target.id == "innermostBox")
parentContainer = RDFUtils.getResource("NC:PersonalToolbarFolder");
else if (dropPosition == this.DROP_ON)
parentContainer = RDFUtils.getResource(aEvent.target.id);
else {
parentContainer = this.findParentContainer(aEvent.target);
rdfContainer.Init(childDB, parentContainer);
var dropElementRes = RDFUtils.getResource(aEvent.target.id);
dropIndex = rdfContainer.IndexOf(dropElementRes);
}
switch (dropPosition) {
case this.DROP_BEFORE:
if (dropIndex<1) dropIndex = 1;
break;
case this.DROP_ON:
dropIndex = -1;
break;
case this.DROP_AFTER:
if (dropIndex <= rdfContainer.GetCount()) ++dropIndex;
if (dropIndex<1) dropIndex = -1;
break;
}
this.insertBookmarkAt(xferData[0], linkTitle, linkCharset, parentContainer, dropIndex);
return;
},
canDrop: function (aEvent, aDragSession)
{
var target = aEvent.target;
return target.id && target.localName != "menupopup" && target.localName != "toolbar" &&
target.localName != "menuseparator" && target.localName != "toolbarseparator" &
target.id != "NC:SystemBookmarksStaticRoot" &&
target.id.substring(0,5) != "find:";
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("moz/rdfitem");
flavourSet.appendFlavour("text/unicode");
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
return flavourSet;
},
////////////////////////////////////
// Private methods and properties //
////////////////////////////////////
DROP_BEFORE:-1,
DROP_ON : 0,
DROP_AFTER : 1,
springLoadedMenuDelay: 350, // milliseconds
isPlatformNotSupported: navigator.platform.indexOf("Linux") != -1,
isTimerSupported: navigator.platform.indexOf("Mac") == -1,
mCurrentDragOverTarget: null,
loadTimer : null,
closeTimer : null,
loadTarget : null,
closeTarget: null,
onDragCloseMenu: function (aNode)
{
var children = aNode.childNodes;
for (var i = 0; i < children.length; i++) {
if (children[i].id == "innermostBox") {
this.onDragCloseMenu(children[i]);
}
else if (this.isContainer(children[i]) && children[i].getAttribute("open") == "true") {
this.onDragCloseMenu(children[i].firstChild);
if (children[i] != this.mCurrentDragOverTarget)
children[i].firstChild.hidePopup();
}
}
},
onDragCloseTarget: function ()
{
// if the mouse is not over a menu, then close everything.
if (!this.mCurrentDragOverTarget) {
this.onDragCloseMenu(document.getElementById("PersonalToolbar"));
return
}
// The bookmark button is not a sibling of the folders in the PT
if (this.mCurrentDragOverTarget.parentNode.id == "innermostBox")
this.onDragCloseMenu(document.getElementById("PersonalToolbar"));
else
this.onDragCloseMenu(this.mCurrentDragOverTarget.parentNode);
},
onDragLoadTarget: function (aTarget)
{
if (!this.mCurrentDragOverTarget)
return;
// Load the current menu
if (this.isContainer(aTarget) && aTarget.getAttribute("group") != "true")
aTarget.firstChild.showPopup(aTarget, -1, -1, "menupopup");
},
onDragOverCheckTimers: function ()
{
var now = new Date().getTime();
if (this.closeTimer && now-this.springLoadedMenuDelay>this.closeTimer) {
this.onDragCloseTarget();
this.closeTimer = null;
}
if (this.loadTimer && (now-this.springLoadedMenuDelay>this.loadTimer)) {
this.onDragLoadTarget(this.loadTarget);
this.loadTimer = null;
}
},
onDragEnterSetTimer: function (aTarget, aDragSession)
{
if (this.isPlatformNotSupported)
return;
if (this.isTimerSupported) {
var targetToBeLoaded = aTarget;
clearTimeout(this.loadTimer);
if (aTarget == aDragSession.sourceNode)
return;
//XXX Hack: see bug 139645
var thisHack = this;
this.loadTimer=setTimeout(function () {thisHack.onDragLoadTarget(targetToBeLoaded)}, this.springLoadedMenuDelay);
} else {
var now = new Date().getTime();
this.loadTimer = now;
this.loadTarget = aTarget;
}
},
onDragExitSetTimer: function (aTarget, aDragSession)
{
if (this.isPlatformNotSupported)
return;
var thisHack = this;
if (this.isTimerSupported) {
clearTimeout(this.closeTimer)
this.closeTimer=setTimeout(function () {thisHack.onDragCloseTarget()}, this.springLoadedMenuDelay);
} else {
var now = new Date().getTime();
this.closeTimer = now;
this.closeTarget = aTarget;
this.loadTimer = null;
// If user isn't rearranging within the menu, close it
// To do so, we exploit a Mac bug: timeout set during
// drag and drop on Windows and Mac are fired only after that the drop is released.
// timeouts will pile up, we may have a better approach but for the moment, this one
// correctly close the menus after a drop/cancel outside the personal toolbar.
// The if statement in the function has been introduced to deal with rare but reproducible
// missing Exit events.
if (aDragSession.sourceNode.localName != "menuitem" && aDragSession.sourceNode.localName != "menu")
setTimeout(function () { if (thisHack.mCurrentDragOverTarget) {thisHack.onDragRemoveFeedBack(thisHack.mCurrentDragOverTarget); thisHack.mCurrentDragOverTarget=null} thisHack.loadTimer=null; thisHack.onDragCloseTarget() }, 0);
}
},
onDragSetFeedBack: function (aEvent)
{
var target = aEvent.target
var dropPosition = this.determineDropPosition(aEvent)
switch (target.localName) {
case "toolbarseparator":
case "toolbarbutton":
if (this.isContainer(target)) {
target.setAttribute("dragover-left" , "true");
target.setAttribute("dragover-right" , "true");
target.setAttribute("dragover-top" , "true");
target.setAttribute("dragover-bottom", "true");
}
else {
switch (dropPosition) {
case this.DROP_BEFORE:
target.removeAttribute("dragover-right");
target.setAttribute("dragover-left", "true");
break;
case this.DROP_AFTER:
target.removeAttribute("dragover-left");
target.setAttribute("dragover-right", "true");
break;
}
}
break;
case "menuseparator":
case "menu":
case "menuitem":
switch (dropPosition) {
case this.DROP_BEFORE:
target.removeAttribute("dragover-bottom");
target.setAttribute("dragover-top", "true");
break;
case this.DROP_AFTER:
target.removeAttribute("dragover-top");
target.setAttribute("dragover-bottom", "true");
break;
}
break;
case "hbox" :
target.lastChild.setAttribute("dragover-right", "true");
break;
case "menupopup":
case "toolbar" : break;
default: dump("No feedback for: "+target.localName+"\n");
}
},
onDragRemoveFeedBack: function (aTarget)
{
if (aTarget.localName == "hbox") {
aTarget.lastChild.removeAttribute("dragover-right");
} else {
aTarget.removeAttribute("dragover-left");
aTarget.removeAttribute("dragover-right");
aTarget.removeAttribute("dragover-top");
aTarget.removeAttribute("dragover-bottom");
}
},
onDropSetFeedBack: function (aTarget)
{
//XXX Not yet...
},
isContainer: function (aTarget)
{
return (aTarget.localName == "menu" || aTarget.localName == "toolbarbutton") &&
(aTarget.getAttribute("container") == "true" || aTarget.getAttribute("group") == "true");
},
///////////////////////////////////////////////////////
// Methods that need to be moved into BookmarksUtils //
///////////////////////////////////////////////////////
//XXXPCH this function returns wrong vertical positions
//XXX skin authors could break us, we'll cross that bridge when they turn us 90degrees
determineDropPosition: function (aEvent)
{
var overButtonBoxObject = aEvent.target.boxObject.QueryInterface(Components.interfaces.nsIBoxObject);
// most things only drop on the left or right
var regionCount = 2;
// you can drop ONTO containers, so there is a "middle" region
if (this.isContainer(aEvent.target))
return this.DROP_ON;
var measure;
var coordValue;
var clientCoordValue;
if (aEvent.target.localName == "menuitem") {
measure = overButtonBoxObject.height/regionCount;
coordValue = overButtonBoxObject.y;
clientCoordValue = aEvent.clientY;
}
else if (aEvent.target.localName == "toolbarbutton") {
measure = overButtonBoxObject.width/regionCount;
coordValue = overButtonBoxObject.x;
clientCoordValue = aEvent.clientX;
}
else
return this.DROP_ON;
// in the first region?
if (clientCoordValue < (coordValue + measure))
return this.DROP_BEFORE;
// in the last region?
if (clientCoordValue >= (coordValue + (regionCount - 1)*measure))
return this.DROP_AFTER;
// must be in the middle somewhere
return this.DROP_ON;
},
isBookmark: function (aURI)
{
if (!aURI)
return false;
var db = document.getElementById("innermostBox").database;
var typeValue = RDFUtils.getTarget(db, aURI, _RDF("type"));
typeValue = RDFUtils.getValueFromResource(typeValue);
return (typeValue == NC_RDF("BookmarkSeparator") ||
typeValue == NC_RDF("Bookmark") ||
typeValue == NC_RDF("Folder"))
},
// returns the parent resource of the dragged element. This is determined
// by inspecting the source element of the drag and walking up the DOM tree
// to find the appropriate containing node.
findParentContainer: function (aElement)
{
if (!aElement) return null;
switch (aElement.localName) {
case "toolbarbutton":
var box = aElement.parentNode;
return RDFUtils.getResource(box.getAttribute("ref"));
case "menu":
case "menuitem":
var parentNode = aElement.parentNode.parentNode;
if (parentNode.getAttribute("type") != NC_RDF("Folder") &&
parentNode.getAttributeNS("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "type") != "http://home.netscape.com/NC-rdf#Folder")
return RDFUtils.getResource("NC:BookmarksRoot");
return RDFUtils.getResource(parentNode.id);
case "treecell":
var treeitem = aElement.parentNode.parentNode.parentNode.parentNode;
var res = treeitem.getAttribute("ref");
if (!res)
res = treeitem.id;
return RDFUtils.getResource(res);
}
return null;
},
insertBookmarkAt: function (aURL, aTitle, aCharset, aFolderRes, aIndex)
{
const kBMSContractID = "@mozilla.org/browser/bookmarks-service;1";
const kBMSIID = Components.interfaces.nsIBookmarksService;
const kBMS = Components.classes[kBMSContractID].getService(kBMSIID);
kBMS.createBookmarkWithDetails(aTitle, aURL, aCharset, aFolderRes, aIndex);
}
}
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