Current File : //proc/self/root/home/tjamichg/cursos.tjamich.gob.mx/main/inc/lib/javascript/svgedit/embedapi.js
/*
Embedded SVG-edit API
General usage:
- Have an iframe somewhere pointing to a version of svg-edit > r1000
- Initialize the magic with:
var svgCanvas = new EmbeddedSVGEdit(window.frames.svgedit);
- Pass functions in this format:
svgCanvas.setSvgString('string')
- Or if a callback is needed:
svgCanvas.setSvgString('string')(function(data, error){
if (error){
// There was an error
} else{
// Handle data
}
})
Everything is done with the same API as the real svg-edit,
and all documentation is unchanged.
However, this file depends on the postMessage API which
can only support JSON-serializable arguments and
return values, so, for example, arguments whose value is
'undefined', a function, a non-finite number, or a built-in
object like Date(), RegExp(), etc. will most likely not behave
as expected. In such a case one may need to host
the SVG editor on the same domain and reference the
JavaScript methods on the frame itself.
The only other difference is
when handling returns: the callback notation is used instead.
var blah = new EmbeddedSVGEdit(window.frames.svgedit);
blah.clearSelection('woot', 'blah', 1337, [1, 2, 3, 4, 5, 'moo'], -42, {a: 'tree',b:6, c: 9})(function(){console.log('GET DATA',arguments)})
*/
(function () {'use strict';
var cbid = 0;
function getCallbackSetter (d) {
return function () {
var t = this, // New callback
args = [].slice.call(arguments),
cbid = t.send(d, args, function(){}); // The callback (currently it's nothing, but will be set later)
return function(newcallback){
t.callbacks[cbid] = newcallback; // Set callback
};
};
}
/*
* Having this separate from messageListener allows us to
* avoid using JSON parsing (and its limitations) in the case
* of same domain control
*/
function addCallback (t, data) {
var result = data.result || data.error,
cbid = data.id;
if (t.callbacks[cbid]) {
if (data.result) {
t.callbacks[cbid](result);
} else {
t.callbacks[cbid](result, 'error');
}
}
}
function messageListener (e) {
// We accept and post strings as opposed to objects for the sake of IE9 support; this
// will most likely be changed in the future
if (typeof e.data !== 'string') {
return;
}
var allowedOrigins = this.allowedOrigins,
data = e.data && JSON.parse(e.data);
if (!data || typeof data !== 'object' || data.namespace !== 'svg-edit' ||
e.source !== this.frame.contentWindow ||
(allowedOrigins.indexOf('*') === -1 && allowedOrigins.indexOf(e.origin) === -1)
) {
return;
}
addCallback(this, data);
}
function getMessageListener (t) {
return function (e) {
messageListener.call(t, e);
};
}
/**
* @param {HTMLIFrameElement} frame
* @param {array} [allowedOrigins=[]] Array of origins from which incoming
* messages will be allowed when same origin is not used; defaults to none.
* If supplied, it should probably be the same as svgEditor's allowedOrigins
*/
function EmbeddedSVGEdit (frame, allowedOrigins) {
if (!(this instanceof EmbeddedSVGEdit)) { // Allow invocation without 'new' keyword
return new EmbeddedSVGEdit(frame);
}
this.allowedOrigins = allowedOrigins || [];
// Initialize communication
this.frame = frame;
this.callbacks = {};
// List of functions extracted with this:
// Run in firebug on http://svg-edit.googlecode.com/svn/trunk/docs/files/svgcanvas-js.html
// for (var i=0,q=[],f = document.querySelectorAll('div.CFunction h3.CTitle a'); i < f.length; i++) { q.push(f[i].name); }; q
// var functions = ['clearSelection', 'addToSelection', 'removeFromSelection', 'open', 'save', 'getSvgString', 'setSvgString',
// 'createLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility',
// 'moveSelectedToLayer', 'clear'];
// 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
// var svgCanvas = frame.contentWindow.svgCanvas;
// var l = []; for (var i in svgCanvas){ if (typeof svgCanvas[i] == 'function') { l.push(i);} };
// alert("['" + l.join("', '") + "']");
// Run in svgedit itself
var i,
functions = [
'clearSvgContentElement', 'setIdPrefix', 'getCurrentDrawing', 'addSvgElementFromJson', 'getTransformList', 'matrixMultiply', 'hasMatrixTransform', 'transformListToTransform', 'convertToNum', 'findDefs', 'getUrlFromAttr', 'getHref', 'setHref', 'getBBox', 'getRotationAngle', 'getElem', 'getRefElem', 'assignAttributes', 'cleanupElement', 'remapElement', 'recalculateDimensions', 'sanitizeSvg', 'runExtensions', 'addExtension', 'round', 'getIntersectionList', 'getStrokedBBox', 'getVisibleElements', 'getVisibleElementsAndBBoxes', 'groupSvgElem', 'getId', 'getNextId', 'call', 'bind', 'prepareSvg', 'setRotationAngle', 'recalculateAllSelectedDimensions', 'clearSelection', 'addToSelection', 'selectOnly', 'removeFromSelection', 'selectAllInCurrentLayer', 'getMouseTarget', 'removeUnusedDefElems', 'svgCanvasToString', 'svgToString', 'embedImage', 'setGoodImage', 'open', 'save', 'rasterExport', 'exportPDF', 'getSvgString', 'randomizeIds', 'uniquifyElems', 'setUseData', 'convertGradients', 'convertToGroup', 'setSvgString', 'importSvgString', 'identifyLayers', 'createLayer', 'cloneLayer', 'deleteCurrentLayer', 'setCurrentLayer', 'renameCurrentLayer', 'setCurrentLayerPosition', 'setLayerVisibility', 'moveSelectedToLayer', 'mergeLayer', 'mergeAllLayers', 'leaveContext', 'setContext', 'clear', 'linkControlPoints', 'getContentElem', 'getRootElem', 'getSelectedElems', 'getResolution', 'getZoom', 'getVersion', 'setUiStrings', 'setConfig', 'getTitle', 'setGroupTitle', 'getDocumentTitle', 'setDocumentTitle', 'getEditorNS', 'setResolution', 'getOffset', 'setBBoxZoom', 'setZoom', 'getMode', 'setMode', 'getColor', 'setColor', 'setGradient', 'setPaint', 'setStrokePaint', 'setFillPaint', 'getStrokeWidth', 'setStrokeWidth', 'setStrokeAttr', 'getStyle', 'getOpacity', 'setOpacity', 'getFillOpacity', 'getStrokeOpacity', 'setPaintOpacity', 'getPaintOpacity', 'getBlur', 'setBlurNoUndo', 'setBlurOffsets', 'setBlur', 'getBold', 'setBold', 'getItalic', 'setItalic', 'getFontFamily', 'setFontFamily', 'setFontColor', 'getFontColor', 'getFontSize', 'setFontSize', 'getText', 'setTextContent', 'setImageURL', 'setLinkURL', 'setRectRadius', 'makeHyperlink', 'removeHyperlink', 'setSegType', 'convertToPath', 'changeSelectedAttribute', 'deleteSelectedElements', 'cutSelectedElements', 'copySelectedElements', 'pasteElements', 'groupSelectedElements', 'pushGroupProperties', 'ungroupSelectedElement', 'moveToTopSelectedElement', 'moveToBottomSelectedElement', 'moveUpDownSelected', 'moveSelectedElements', 'cloneSelectedElements', 'alignSelectedElements', 'updateCanvas', 'setBackground', 'cycleElement', 'getPrivateMethods', 'zoomChanged', 'ready'
];
// TODO: rewrite the following, it's pretty scary.
for (i = 0; i < functions.length; i++) {
this[functions[i]] = getCallbackSetter(functions[i]);
}
// Older IE may need a polyfill for addEventListener, but so it would for SVG
window.addEventListener('message', getMessageListener(this), false);
}
EmbeddedSVGEdit.prototype.send = function (name, args, callback){
var t = this;
cbid++;
this.callbacks[cbid] = callback;
setTimeout((function (cbid) {
return function () { // Delay for the callback to be set in case its synchronous
/*
* Todo: Handle non-JSON arguments and return values (undefined,
* nonfinite numbers, functions, and built-in objects like Date,
* RegExp), etc.? Allow promises instead of callbacks? Review
* SVG-Edit functions for whether JSON-able parameters can be
* made compatile with all API functionality
*/
// We accept and post strings for the sake of IE9 support
if (window.location.origin === t.frame.contentWindow.location.origin) {
// Although we do not really need this API if we are working same
// domain, it could allow us to write in a way that would work
// cross-domain as well, assuming we stick to the argument limitations
// of the current JSON-based communication API (e.g., not passing
// callbacks). We might be able to address these shortcomings; see
// the todo elsewhere in this file.
var message = {id: cbid},
svgCanvas = t.frame.contentWindow.svgCanvas;
try {
message.result = svgCanvas[name].apply(svgCanvas, args);
}
catch (err) {
message.error = err.message;
}
addCallback(t, message);
}
else { // Requires the ext-xdomain-messaging.js extension
t.frame.contentWindow.postMessage(JSON.stringify({namespace: 'svgCanvas', id: cbid, name: name, args: args}), '*');
}
};
}(cbid)), 0);
return cbid;
};
window.embedded_svg_edit = EmbeddedSVGEdit; // Export old, deprecated API
window.EmbeddedSVGEdit = EmbeddedSVGEdit; // Follows common JS convention of CamelCase and, as enforced in JSLint, of initial caps for constructors
}());
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