114 lines
3.1 KiB
JavaScript
114 lines
3.1 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/browse.js
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type: application/javascript
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module-type: widget
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Browse widget for browsing for files to import
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var Widget = require("$:/core/modules/widgets/widget.js").widget;
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var BrowseWidget = function(parseTreeNode,options) {
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this.initialise(parseTreeNode,options);
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};
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/*
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Inherit from the base widget class
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*/
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BrowseWidget.prototype = new Widget();
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/*
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Render this widget into the DOM
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*/
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BrowseWidget.prototype.render = function(parent,nextSibling) {
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var self = this;
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// Remember parent
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this.parentDomNode = parent;
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// Compute attributes and execute state
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this.computeAttributes();
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this.execute();
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// Create element
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var domNode = this.document.createElement("input");
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domNode.setAttribute("type","file");
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if(this.browseMultiple) {
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domNode.setAttribute("multiple","multiple");
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}
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if(this.tooltip) {
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domNode.setAttribute("title",this.tooltip);
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}
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// Nw.js supports "nwsaveas" to force a "save as" dialogue that allows a new or existing file to be selected
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if(this.nwsaveas) {
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domNode.setAttribute("nwsaveas",this.nwsaveas);
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}
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if(this.accept) {
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domNode.setAttribute("accept",this.accept);
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}
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// Nw.js supports "webkitdirectory" and "nwdirectory" to allow a directory to be selected
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if(this.webkitdirectory) {
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domNode.setAttribute("webkitdirectory",this.webkitdirectory);
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}
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if(this.nwdirectory) {
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domNode.setAttribute("nwdirectory",this.nwdirectory);
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}
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// Add a click event handler
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domNode.addEventListener("change",function (event) {
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if(self.message) {
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self.dispatchEvent({type: self.message, param: self.param, files: event.target.files});
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} else {
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self.wiki.readFiles(event.target.files,{
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callback: function(tiddlerFieldsArray) {
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self.dispatchEvent({type: "tm-import-tiddlers", param: JSON.stringify(tiddlerFieldsArray)});
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},
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deserializer: self.deserializer
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});
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}
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return false;
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},false);
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// Assign data- attributes
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this.assignAttributes(domNode,{
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sourcePrefix: "data-",
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destPrefix: "data-"
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});
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// Insert element
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parent.insertBefore(domNode,nextSibling);
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this.renderChildren(domNode,null);
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this.domNodes.push(domNode);
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};
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/*
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Compute the internal state of the widget
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*/
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BrowseWidget.prototype.execute = function() {
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this.browseMultiple = this.getAttribute("multiple");
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this.deserializer = this.getAttribute("deserializer");
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this.message = this.getAttribute("message");
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this.param = this.getAttribute("param");
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this.tooltip = this.getAttribute("tooltip");
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this.nwsaveas = this.getAttribute("nwsaveas");
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this.accept = this.getAttribute("accept");
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this.webkitdirectory = this.getAttribute("webkitdirectory");
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this.nwdirectory = this.getAttribute("nwdirectory");
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};
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/*
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Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
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*/
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BrowseWidget.prototype.refresh = function(changedTiddlers) {
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var changedAttributes = this.computeAttributes();
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if($tw.utils.count(changedAttributes) > 0) {
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this.refreshSelf();
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return true;
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}
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return false;
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};
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exports.browse = BrowseWidget;
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})();
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