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344 lines
13 KiB
JavaScript
344 lines
13 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* - Kevin Puetz (puetzk@iastate.edu)
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* - Ben Goodger <ben@netscape.com>
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*/
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////////////////////////////////////////////////////////////////////////////
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// XXX - WARNING - DRAG AND DROP API CHANGE ALERT - XXX
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// This file has been extensively modified in a checkin planned for Mozilla
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// 0.8, and the API has been modified. DO NOT MODIFY THIS FILE without
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// approval from ben@netscape.com, otherwise your changes will be lost.
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var gRDFService = Components.classes["@mozilla.org/rdf/rdf-service;1"]
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.getService(Components.interfaces.nsIRDFService);
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function _RDF(aType)
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{
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return "http://www.w3.org/1999/02/22-rdf-syntax-ns#" + aType;
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}
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function NC_RDF(aType)
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{
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return "http://home.netscape.com/NC-rdf#" + aType;
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}
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var RDFUtils = {
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getResource: function(aString)
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{
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return gRDFService.GetResource(aString, true);
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},
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getTarget: function(aDS, aSourceID, aPropertyID)
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{
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var source = this.getResource(aSourceID);
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var property = this.getResource(aPropertyID);
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return aDS.GetTarget(source, property, true);
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},
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getValueFromResource: function(aResource)
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{
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aResource = aResource.QueryInterface(Components.interfaces.nsIRDFResource);
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return aResource ? aResource.Value : null;
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}
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};
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function isBookmark(aURI)
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{
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var db = document.getElementById("innermostBox").database;
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var typeValue = RDFUtils.getTarget(db, aURI, _RDF("type"));
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typeValue = RDFUtils.getValueFromResource(typeValue);
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return (typeValue == NC_RDF("BookmarkSeparator") ||
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typeValue == NC_RDF("Bookmark") ||
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typeValue == NC_RDF("Folder"))
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}
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var personalToolbarObserver = {
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onDragStart: function (aEvent, aXferData, aDragAction)
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{
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var personalToolbar = document.getElementById("PersonalToolbar");
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if (aEvent.target == personalToolbar) return;
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var db = document.getElementById("innermostBox").database;
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var uri = aEvent.target.id;
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if (!isBookmark(uri)) return;
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var url = RDFUtils.getTarget(db, uri, NC_RDF("URL"));
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var name = RDFUtils.getTarget(db, uri, NC_RDF("Name"));
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var urlString = url + "\n" + name;
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var htmlString = "<A HREF='" + uri + "'>" + name + "</A>";
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aXferData.data = new TransferData();
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aXferData.data.addDataForFlavour("moz/rdfitem", uri);
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aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
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aXferData.data.addDataForFlavour("text/html", htmlString);
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aXferData.data.addDataForFlavour("text/unicode", url);
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},
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onDrop: function (aEvent, aXferData, aDragSession)
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{
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var dropElement = aEvent.target.id;
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var elementRes = RDFUtils.getResource(aXferData.data);
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var dropElementRes = RDFUtils.getResource(dropElement);
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var personalToolbarRes = RDFUtils.getResource("NC:PersonalToolbarFolder");
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var childDB = document.getElementById("innermostBox").database;
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const kCtrContractID = "@mozilla.org/rdf/container;1";
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const kCtrIID = Components.interfaces.nsIRDFContainer;
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var rdfContainer = Components.classes[kCtrContractID].getService(kCtrIID);
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var parentContainer = this.findParentContainer(aDragSession.sourceElement);
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if (parentContainer)
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{
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rdfContainer.Init(childDB, parentContainer);
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rdfContainer.RemoveElement(elementRes, true);
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}
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else
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{
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// look up this URL's title in global history
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var potentialTitle = null;
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var historyDS = gRDFService.GetDataSource("rdf:history");
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var historyTitleProperty = RDFUtils.getResource(NC_RDF("Name"));
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var titleFromHistory = historyDS.GetTarget(elementRes, historyTitleProperty, true);
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if (titleFromHistory)
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titleFromHistory = titleFromHistory.QueryInterface(Components.interfaces.nsIRDFLiteral);
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if (titleFromHistory)
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potentialTitle = titleFromHistory.Value;
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linkTitle = potentialTitle ? potentialTitle : element;
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childDB.Assert(elementRes, historyTitleProperty,
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gRDFService.GetLiteral(linkTitle), true);
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}
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rdfContainer.Init (childDB, personalToolbarRes);
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var dropIndex = rdfContainer.IndexOf(dropElementRes);
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// determine the drop position
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var dropPosition = this.determineDropPosition(aEvent);
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switch (dropPosition) {
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case -1:
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rdfContainer.Init(childDB, personalToolbarRes);
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dump("*** elt= " + elementRes.Value + "\n");
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rdfContainer.InsertElementAt(elementRes, dropIndex, true);
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break;
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case 0:
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// do something here to drop into subfolders
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rdfContainer.Init(childDB, dropElementRes);
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rdfContainer.AppendElement(elementRes);
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break;
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case 1:
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default:
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rdfContainer.Init (childDB, personalToolbarRes);
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rdfContainer.InsertElementAt(elementRes, dropIndex+1, true);
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break;
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}
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return true;
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},
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mCurrentDragOverButton: null,
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mCurrentDragPosition: null,
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onDragExit: function (aEvent, aDragSession)
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{
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if (this.mCurrentDragOverButton)
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{
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this.mCurrentDragOverButton.removeAttribute("dragover-left");
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this.mCurrentDragOverButton.removeAttribute("dragover-right");
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this.mCurrentDragOverButton.removeAttribute("dragover-top");
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this.mCurrentDragOverButton.removeAttribute("open");
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}
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},
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onDragOver: function (aEvent, aFlavour, aDragSession)
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{
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var dropPosition = this.determineDropPosition(aEvent);
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if (this.mCurrentDragOverButton != aEvent.target ||
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(this.mCurrentDragOverButton == aEvent.target &&
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this.mCurrentDragPosition != dropPosition))
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{
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if (this.mCurrentDragOverButton)
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{
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this.mCurrentDragOverButton.removeAttribute("dragover-left");
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this.mCurrentDragOverButton.removeAttribute("dragover-right");
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this.mCurrentDragOverButton.removeAttribute("dragover-top");
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this.mCurrentDragOverButton.removeAttribute("open");
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}
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this.mCurrentDragOverButton = aEvent.target;
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this.mCurrentDragPosition = dropPosition;
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}
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switch (dropPosition)
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{
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case -1:
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aEvent.target.setAttribute("dragover-left", "true");
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break;
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case 1:
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aEvent.target.setAttribute("dragover-right", "true");
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break;
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case 0:
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default:
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if (aEvent.target.getAttribute("container") == "true") {
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aEvent.target.setAttribute("dragover-top", "true");
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//cant open a menu during a drag! suck!
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//aEvent.target.setAttribute("open", "true");
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}
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break;
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}
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return true;
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},
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getSupportedFlavours: function ()
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{
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var flavourSet = new FlavourSet();
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flavourSet.appendFlavour("moz/rdfitem");
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// application/x-moz-file
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flavourSet.appendFlavour("text/unicode");
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return flavourSet;
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},
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determineDropPosition: function (aEvent)
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{
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var overButton = aEvent.target;
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var overButtonBoxObject = overButton.boxObject.QueryInterface(Components.interfaces.nsIBoxObject);
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if (aEvent.clientX < (overButtonBoxObject.x + overButtonBoxObject.width/3))
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{
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if (aEvent.clientY > overButtonBoxObject.y &&
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aEvent.clientY < overButtonBoxObject.y + overButtonBoxObject.height)
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return -1;
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}
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else if (aEvent.clientX > (overButtonBoxObject.x + 2*(overButtonBoxObject.width/3)))
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{
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if (aEvent.clientY > overButtonBoxObject.y &&
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aEvent.clientY < overButtonBoxObject.y + overButtonBoxObject.height)
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return 1;
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}
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else if (aEvent.clientX > (overButtonBoxObject.x + overButtonBoxObject.width/3) &&
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aEvent.clientX < ((overButtonBoxObject.x + 2*(overButtonBoxObject.width/3))))
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{
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if (aEvent.clientY > overButtonBoxObject.y &&
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aEvent.clientY < overButtonBoxObject.y + overButtonBoxObject.height)
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return 0;
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}
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return 0;
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},
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// returns the parent resource of the dragged element. This is determined
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// by inspecting the source element of the drag and walking up the DOM tree
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// to find the appropriate containing node.
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findParentContainer: function (aElement)
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{
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switch (aElement.localName)
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{
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case "button":
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case "menubutton":
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var box = aElement.parentNode;
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return RDFUtils.getResource(box.getAttribute("ref"));
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case "menu":
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case "menuitem":
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var menu = aElement.parentNode.parentNode;
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return RDFUtils.getResource(menu.id);
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case "treecell":
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var treeitem = aElement.parentNode.parentNode.parentNode.parentNode;
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return RDFUtils.getResource(treeitem.id);
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}
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return null;
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}
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};
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var proxyIconDNDObserver = {
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onDragStart: function (aEvent, aXferData, aDragAction)
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{
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var urlBar = document.getElementById("urlbar");
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// XXX - do we want to allow the user to set a blank page to their homepage?
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// if so then we want to modify this a little to set about:blank as
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// the homepage in the event of an empty urlbar.
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if (!urlBar.value) return;
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var urlString = urlBar.value + "\n" + window._content.document.title;
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var htmlString = "<a href=\"" + urlBar.value + "\">" + urlBar.value + "</a>";
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aXferData.data = new TransferData();
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aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
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aXferData.data.addDataForFlavour("text/unicode", urlBar.value);
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aXferData.data.addDataForFlavour("text/html", htmlString);
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}
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};
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var homeButtonObserver = {
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onDragStart: function (aEvent, aXferData, aDragAction)
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{
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var homepage = nsPreferences.getLocalizedUnicharPref("browser.startup.homepage", "about:blank");
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if (homepage)
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{
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// XXX find a readable title string for homepage, perhaps do a history lookup.
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var htmlString = "<a href=\"" + homepage + "\">" + homepage + "</a>";
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aXferData.data = new TransferData();
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aXferData.data.addDataForFlavour("text/x-moz-url", homepage + "\n" + homepage);
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aXferData.data.addDataForFlavour("text/html", htmlString);
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aXferData.data.addDataForFlavour("text/unicode", homepage);
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}
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},
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onDrop: function (aEvent, aXferData, aDragSession)
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{
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var url = retrieveURLFromData(aXferData.data, aXferData.flavour.contentType);
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var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
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var pressedVal = { };
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var promptTitle = gNavigatorBundle.getString("droponhometitle");
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var promptMsg = gNavigatorBundle.getString("droponhomemsg");
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var okButton = gNavigatorBundle.getString("droponhomeokbutton");
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var iconURL = "chrome://navigator/skin/home.gif"; // evil evil common dialog code! evil!
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promptService.universalDialog(window, null, promptTitle, promptMsg, null,
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okButton, null, null, null, null, null, { }, { },
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iconURL, { }, 2, 0, null, pressedVal);
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if (pressedVal.value == 0) {
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nsPreferences.setUnicharPref("browser.startup.homepage", url);
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setTooltipText("home-button", url);
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}
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},
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onDragOver: function (aEvent, aFlavour, aDragSession)
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{
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var statusTextFld = document.getElementById("statusbar-display");
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statusTextFld.label = gNavigatorBundle.getString("droponhomebutton");
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aDragSession.dragAction = Components.interfaces.nsIDragService.DRAGDROP_ACTION_LINK;
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},
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onDragExit: function (aEvent, aDragSession)
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{
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statusTextFld.label = "";
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},
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getSupportedFlavours: function ()
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{
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var flavourSet = new FlavourSet();
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flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
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flavourSet.appendFlavour("text/x-moz-url");
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flavourSet.appendFlavour("text/unicode");
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return flavourSet;
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}
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};
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