84 lines
2.2 KiB
JavaScript
84 lines
2.2 KiB
JavaScript
/*\
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title: $:/plugins/tiddlywiki/innerwiki/screenshot.js
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type: application/javascript
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module-type: command
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Commands to render tiddlers identified by a filter and save any screenshots identified by <$innerwiki> widgets
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var InnerWikiWidget = require("$:/plugins/tiddlywiki/innerwiki/innerwiki.js").innerwiki;
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exports.info = {
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name: "screenshot",
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synchronous: false
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};
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var Command = function(params,commander,callback) {
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this.params = params;
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this.commander = commander;
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this.callback = callback;
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};
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Command.prototype.execute = function() {
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var self = this;
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if(this.params.length < 1) {
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return "Missing filter";
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}
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var filter = this.params[0],
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deviceScaleFactor = parseInt(this.params[1],10) || 1,
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tiddlers = this.commander.wiki.filterTiddlers(filter);
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// Render each tiddler into a widget tree
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var innerWikiWidgets = [];
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$tw.utils.each(tiddlers,function(title) {
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var parser = self.commander.wiki.parseTiddler(title),
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variables = {currentTiddler: title},
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widgetNode = self.commander.wiki.makeWidget(parser,{variables: variables}),
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container = $tw.fakeDocument.createElement("div");
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widgetNode.render(container,null);
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// Find any innerwiki widgets
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Array.prototype.push.apply(innerWikiWidgets,self.findInnerWikiWidgets(widgetNode));
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});
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// Asynchronously tell each innerwiki widget to save a screenshot
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var processNextInnerWikiWidget = function() {
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if(innerWikiWidgets.length > 0) {
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var widget = innerWikiWidgets[0];
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innerWikiWidgets.shift();
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widget.saveScreenshot({
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basepath: self.commander.outputPath,
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deviceScaleFactor: deviceScaleFactor
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},function(err) {
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if(err) {
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self.callback(err);
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}
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processNextInnerWikiWidget();
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});
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} else {
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self.callback(null);
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}
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};
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processNextInnerWikiWidget();
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return null;
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};
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Command.prototype.findInnerWikiWidgets = function(widgetNode) {
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var self = this,
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results = [];
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if(widgetNode.saveScreenshot) {
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results.push(widgetNode)
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}
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$tw.utils.each(widgetNode.children,function(childWidget) {
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Array.prototype.push.apply(results,self.findInnerWikiWidgets(childWidget));
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});
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return results;
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};
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exports.Command = Command;
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})();
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