117 lines
5.2 KiB
JavaScript
117 lines
5.2 KiB
JavaScript
/*
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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 EmbeddedSVGEdit(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 EmbeddedSVGEdit(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 () {'use strict';
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var cbid = 0;
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function getCallbackSetter (d) {
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return function(){
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var t = this, // new callback
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args = [].slice.call(arguments),
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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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}
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function EmbeddedSVGEdit(frame){
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if (!(this instanceof EmbeddedSVGEdit)) { // Allow invocation without "new" keyword
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return new EmbeddedSVGEdit(frame);
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}
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// initialize communication
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this.frame = frame;
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this.callbacks = {}; // successor to stack
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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 i,
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t = this,
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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", "zoomChanged",
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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(i = 0; i < functions.length; i++){
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this[functions[i]] = getCallbackSetter(functions[i]);
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}
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// Older IE may need a polyfill for addEventListener, but so it would for SVG
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window.addEventListener("message", function(e){
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if (!e.data || typeof e.data !== "object" || e.data.namespace !== "svg-edit") {
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return;
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}
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var data = e.data.result || e.data.error,
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cbid = e.data.id;
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if(t.callbacks[cbid]){
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if(e.data.result){
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t.callbacks[cbid](data);
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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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}, false);
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}
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EmbeddedSVGEdit.prototype.send = function(name, args, callback){
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var t = this;
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cbid++;
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this.callbacks[cbid] = callback;
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setTimeout(function(){ // delay for the callback to be set in case its synchronous
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// Todo: Handle non-JSON arguments and return values (undefined, nonfinite numbers, functions, and built-in objects like Date, RegExp), etc.?
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t.frame.contentWindow.postMessage({namespace: "svgCanvas", id: cbid, name: name, args: args}, '*');
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}, 0);
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return cbid;
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};
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window.embedded_svg_edit = EmbeddedSVGEdit; // Export old, deprecated API
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window.EmbeddedSVGEdit = EmbeddedSVGEdit; // Follows common JS convention of CamelCase and, as enforced in JSLint, of initial caps for constructors
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}());
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