/*
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function embedded_svg_edit(frame){
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//initialize communication
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this.frame = frame;
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this.stack = []; //callback stack
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var editapi = this;
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window.addEventListener("message", function(e){
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if(e.data.substr(0,5) == "ERROR"){
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editapi.stack.splice(0,1)[0](e.data,"error")
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}else{
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editapi.stack.splice(0,1)[0](e.data)
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}
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}, false)
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}
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embedded_svg_edit.prototype.call = function(code, callback){
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this.stack.push(callback);
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this.frame.contentWindow.postMessage(code,"*");
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}
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embedded_svg_edit.prototype.getSvgString = function(callback){
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this.call("svgCanvas.getSvgString()",callback)
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}
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embedded_svg_edit.prototype.setSvgString = function(svg){
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this.call("svgCanvas.setSvgString('"+svg.replace(/'/g, "\\'")+"')");
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}
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*/
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/*
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Embedded SVG-edit API
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General usage:
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- Have an iframe somewhere pointing to a version of svg-edit > r1000
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- Initialize the magic with:
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var svgCanvas = new embedded_svg_edit(window.frames['svgedit']);
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- Pass functions in this format:
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svgCanvas.setSvgString("string")
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- Or if a callback is needed:
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svgCanvas.setSvgString("string")(function(data, error){
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if(error){
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//there was an error
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}else{
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//handle data
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}
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})
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Everything is done with the same API as the real svg-edit,
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and all documentation is unchanged. The only difference is
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when handling returns, the callback notation is used instead.
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var blah = new embedded_svg_edit(window.frames['svgedit']);
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blah.clearSelection("woot","blah",1337,[1,2,3,4,5,"moo"],-42,{a: "tree",b:6, c: 9})(function(){console.log("GET DATA",arguments)})
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*/
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function embedded_svg_edit(frame){
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//initialize communication
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this.frame = frame;
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//this.stack = [] //callback stack
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this.callbacks = {}; //successor to stack
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this.encode = embedded_svg_edit.encode;
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//List of functions extracted with this:
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//Run in firebug on http://svg-edit.googlecode.com/svn/trunk/docs/files/svgcanvas-js.html
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//for(var i=0,q=[],f = document.querySelectorAll("div.CFunction h3.CTitle a");i<f.length;i++){q.push(f[i].name)};q
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//var functions = ["clearSelection", "addToSelection", "removeFromSelection", "open", "save", "getSvgString", "setSvgString",
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//"createLayer", "deleteCurrentLayer", "setCurrentLayer", "renameCurrentLayer", "setCurrentLayerPosition", "setLayerVisibility",
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//"moveSelectedToLayer", "clear"];
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//Newer, well, it extracts things that aren't documented as well. All functions accessible through the normal thingy can now be accessed though the API
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//var l=[];for(var i in svgCanvas){if(typeof svgCanvas[i] == "function"){l.push(i)}};
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//run in svgedit itself
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var functions = ["updateElementFromJson", "embedImage", "fixOperaXML", "clearSelection", "addToSelection",
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"removeFromSelection", "addNodeToSelection", "open", "save", "getSvgString", "setSvgString", "createLayer",
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"deleteCurrentLayer", "getCurrentDrawing", "setCurrentLayer", "renameCurrentLayer", "setCurrentLayerPosition",
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"setLayerVisibility", "moveSelectedToLayer", "clear", "clearPath", "getNodePoint", "clonePathNode", "deletePathNode",
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"getResolution", "getImageTitle", "setImageTitle", "setResolution", "setBBoxZoom", "setZoom", "getMode", "setMode",
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"getStrokeColor", "setStrokeColor", "getFillColor", "setFillColor", "setStrokePaint", "setFillPaint", "getStrokeWidth",
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"setStrokeWidth", "getStrokeStyle", "setStrokeStyle", "getOpacity", "setOpacity", "getFillOpacity", "setFillOpacity",
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"getStrokeOpacity", "setStrokeOpacity", "getTransformList", "getBBox", "getRotationAngle", "setRotationAngle", "each",
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"bind", "setIdPrefix", "getBold", "setBold", "getItalic", "setItalic", "getFontFamily", "setFontFamily", "getFontSize",
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"setFontSize", "getText", "setTextContent", "setImageURL", "setRectRadius", "setSegType", "quickClone",
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"changeSelectedAttributeNoUndo", "changeSelectedAttribute", "deleteSelectedElements", "groupSelectedElements",
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"ungroupSelectedElement", "moveToTopSelectedElement", "moveToBottomSelectedElement", "moveSelectedElements",
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"getStrokedBBox", "getVisibleElements", "cycleElement", "getUndoStackSize", "getRedoStackSize", "getNextUndoCommandText",
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"getNextRedoCommandText", "undo", "redo", "cloneSelectedElements", "alignSelectedElements", "getZoom", "getVersion",
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"setIconSize", "setLang", "setCustomHandlers"];
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//TODO: rewrite the following, it's pretty scary.
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for(var i = 0; i < functions.length; i++){
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this[functions[i]] = (function(d){
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return function(){
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var t = this //new callback
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for(var g = 0, args = []; g < arguments.length; g++){
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args.push(arguments[g]);
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}
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var cbid = t.send(d,args, function(){}) //the callback (currently it's nothing, but will be set later
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return function(newcallback){
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t.callbacks[cbid] = newcallback; //set callback
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}
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}
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})(functions[i])
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}
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//TODO: use AddEvent for Trident browsers, currently they dont support SVG, but they do support onmessage
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var t = this;
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window.addEventListener("message", function(e){
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if(e.data.substr(0,4)=="SVGe"){ //because svg-edit is too longish
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var data = e.data.substr(4);
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var cbid = data.substr(0, data.indexOf(";"));
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if(t.callbacks[cbid]){
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if(data.substr(0,6) != "error:"){
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t.callbacks[cbid](eval("("+data.substr(cbid.length+1)+")"))
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}else{
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t.callbacks[cbid](data, "error");
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}
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}
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}
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//this.stack.shift()[0](e.data,e.data.substr(0,5) == "ERROR"?'error':null) //replace with shift
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}, false)
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}
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embedded_svg_edit.encode = function(obj){
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//simple partial JSON encoder implementation
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if(window.JSON && JSON.stringify) return JSON.stringify(obj);
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var enc = arguments.callee; //for purposes of recursion
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if(typeof obj == "boolean" || typeof obj == "number"){
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return obj+'' //should work...
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}else if(typeof obj == "string"){
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//a large portion of this is stolen from Douglas Crockford's json2.js
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return '"'+
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obj.replace(
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/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g
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, function (a) {
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return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
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})
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+'"'; //note that this isn't quite as purtyful as the usualness
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}else if(obj.length){ //simple hackish test for arrayish-ness
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for(var i = 0; i < obj.length; i++){
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obj[i] = enc(obj[i]); //encode every sub-thingy on top
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}
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return "["+obj.join(",")+"]";
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}else{
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var pairs = []; //pairs will be stored here
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for(var k in obj){ //loop through thingys
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pairs.push(enc(k)+":"+enc(obj[k])); //key: value
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}
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return "{"+pairs.join(",")+"}" //wrap in the braces
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}
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}
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embedded_svg_edit.prototype.send = function(name, args, callback){
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var cbid = Math.floor(Math.random()*31776352877+993577).toString();
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//this.stack.push(callback);
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this.callbacks[cbid] = callback;
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for(var argstr = [], i = 0; i < args.length; i++){
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argstr.push(this.encode(args[i]))
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}
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var t = this;
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setTimeout(function(){//delay for the callback to be set in case its synchronous
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t.frame.contentWindow.postMessage(cbid+";svgCanvas['"+name+"']("+argstr.join(",")+")","*");
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}, 0);
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return cbid;
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//this.stack.shift()("svgCanvas['"+name+"']("+argstr.join(",")+")")
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}
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