mirror of
https://github.com/Jermolene/TiddlyWiki5
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![Jeremy Ruston](/assets/img/avatar_default.png)
Right now we're setting the created/modified time, and only setting the creator/modifier if the tiddler `$:/status/UserName` is defined.
257 lines
7.4 KiB
JavaScript
257 lines
7.4 KiB
JavaScript
/*\
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title: $:/core/modules/widgets/import.js
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type: application/javascript
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module-type: widget
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Implements the import widget.
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```
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<$import>
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Import using the "browse..." button or drag files onto this text
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</$import>
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```
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var ImportWidget = function(renderer) {
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// Save state
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this.renderer = renderer;
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// Generate child nodes
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this.generate();
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};
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ImportWidget.prototype.generate = function() {
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// Get the parameters from the attributes
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this.browse = this.renderer.getAttribute("browse","yes");
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this["class"] = this.renderer.getAttribute("class");
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// Compute classes
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var classes = ["tw-import"];
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if(this["class"]) {
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$tw.utils.pushTop(classes,this["class"]);
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}
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// Create the file input and container elements
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var fileInput = {
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type: "element",
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tag: "input",
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attributes: {
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type: {type: "string", value: "file"},
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style: {type: "string", value: this.browse === "no" ? "display: none;" : "display: block;"}
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},
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events: [{name: "change", handlerObject: this, handlerMethod: "handleChangeEvent"}]
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},
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container = {
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type: "element",
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tag: "div",
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children: this.renderer.parseTreeNode.children,
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events: [
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{name: "dragenter", handlerObject: this, handlerMethod: "handleDragEnterEvent"},
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{name: "dragover", handlerObject: this, handlerMethod: "handleDragOverEvent"},
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{name: "dragleave", handlerObject: this, handlerMethod: "handleDragLeaveEvent"},
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{name: "drop", handlerObject: this, handlerMethod: "handleDropEvent"},
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{name: "paste", handlerObject: this, handlerMethod: "handlePasteEvent"}]
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};
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// Set the return element
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this.tag = "div";
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this.attributes = {
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"class": classes.join(" ")
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};
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this.children = this.renderer.renderTree.createRenderers(this.renderer,[fileInput,container]);
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};
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ImportWidget.prototype.handleChangeEvent = function(event) {
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event.stopPropagation();
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this.importFiles(event.target.files);
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};
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ImportWidget.prototype.handleDragEnterEvent = function(event) {
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// We count enter/leave events
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this.dragEnterCount = (this.dragEnterCount || 0) + 1;
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// If we're entering for the first time we need to apply highlighting
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if(this.dragEnterCount === 1) {
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$tw.utils.addClass(this.renderer.domNode,"tw-dragover");
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}
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// Tell the browser that we're ready to handle the drop
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event.preventDefault();
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// Tell the browser not to ripple the drag up to any parent drop handlers
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event.stopPropagation();
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};
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ImportWidget.prototype.handleDragOverEvent = function(event) {
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// Tell the browser that we're still interested in the drop
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event.preventDefault();
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event.dataTransfer.dropEffect = 'copy'; // Explicitly show this is a copy
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};
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ImportWidget.prototype.handleDragLeaveEvent = function(event) {
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// Reduce the enter count
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this.dragEnterCount = (this.dragEnterCount || 0) - 1;
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// Remove highlighting if we're leaving externally
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if(this.dragEnterCount <= 0) {
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$tw.utils.removeClass(this.renderer.domNode,"tw-dragover");
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}
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};
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ImportWidget.prototype.handleDropEvent = function(event) {
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var dataTransfer = event.dataTransfer;
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// Reset the enter count
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this.dragEnterCount = 0;
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// Remove highlighting
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$tw.utils.removeClass(this.renderer.domNode,"tw-dragover");
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// Try to import the various data types we understand
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this.importData(dataTransfer);
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// Import any files in the drop
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this.importFiles(dataTransfer.files);
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// Tell the browser that we handled the drop
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event.preventDefault();
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// Stop the drop ripple up to any parent handlers
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event.stopPropagation();
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};
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ImportWidget.prototype.handlePasteEvent = function(event) {
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// Let the browser handle it if we're in a textarea or input box
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if(["TEXTAREA","INPUT"].indexOf(event.target.tagName) == -1) {
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var self = this,
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items = event.clipboardData.items;
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// Enumerate the clipboard items
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for(var t = 0; t<items.length; t++) {
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var item = items[t];
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if(item.kind === "file") {
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// Import any files
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var file = item.getAsFile();
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this.importFiles([file]);
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} else if(item.kind === "string") {
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// Create tiddlers from string items
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item.getAsString(function(str) {
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var fields = {
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title: self.generateTitle("Untitled"),
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text: str
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};
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self.storeTiddler(fields);
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self.openTiddler(fields.title);
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});
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}
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}
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// Tell the browser that we've handled the paste
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event.stopPropagation();
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event.preventDefault();
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}
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};
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ImportWidget.prototype.openTiddler = function(title) {
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$tw.utils.dispatchCustomEvent(this.renderer.domNode,"tw-navigate",{
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navigateTo: title,
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navigateFromNode: this.renderer.domNode,
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navigateFromClientRect: this.renderer.domNode.getBoundingClientRect()
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});
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};
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ImportWidget.prototype.importData = function(dataTransfer) {
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for(var t=0; t<this.importDataTypes.length; t++) {
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var dataType = this.importDataTypes[t];
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var data = dataTransfer.getData(dataType.type);
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if(data !== "") {
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var fields = dataType.handler(data);
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if(!fields.title) {
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fields.title = this.generateTitle("Untitled");
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}
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this.storeTiddler(fields);
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this.openTiddler(fields.title);
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return;
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}
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};
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};
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ImportWidget.prototype.importDataTypes = [
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{type: "text/vnd.tiddler", handler: function(data) {
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return JSON.parse(data);
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}},
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{type: "text/plain", handler: function(data) {
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return {
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text: data
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};
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}},
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{type: "text/uri-list", handler: function(data) {
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return {
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text: data
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};
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}}
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];
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ImportWidget.prototype.importFiles = function(files) {
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var self = this,
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importFile = function(file) {
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// Get the type, falling back to the filename extension
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var type = file.type;
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if(type === "" || !type) {
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var dotPos = file.name.lastIndexOf(".");
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if(dotPos !== -1) {
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var fileExtensionInfo = $tw.config.fileExtensionInfo[file.name.substr(dotPos)];
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if(fileExtensionInfo) {
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type = fileExtensionInfo.type;
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}
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}
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}
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// Figure out if we're reading a binary file
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var contentTypeInfo = $tw.config.contentTypeInfo[type],
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isBinary = contentTypeInfo ? contentTypeInfo.encoding === "base64" : false;
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// Create the FileReader
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var reader = new FileReader();
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reader.onload = function(event) {
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// Deserialise the file contents
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var fields = {
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title: file.name || "Untitled",
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type: type};
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// Are we binary?
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if(isBinary) {
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var commaPos = event.target.result.indexOf(",");
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if(commaPos !== -1) {
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fields.text = event.target.result.substr(commaPos+1);
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self.storeTiddler(fields);
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self.openTiddler(fields.title);
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}
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} else {
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var tiddlers = self.renderer.renderTree.wiki.deserializeTiddlers(type,event.target.result,fields);
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if(!tiddlers) {
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console.log("No tiddlers found in file ",file.name);
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} else {
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$tw.utils.each(tiddlers,function(tiddlerFields) {
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tiddlerFields.title = self.generateTitle(tiddlerFields.title);
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self.storeTiddler(tiddlerFields);
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self.openTiddler(tiddlerFields.title);
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});
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}
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}
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};
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if(isBinary) {
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reader.readAsDataURL(file);
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} else {
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reader.readAsText(file);
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}
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};
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for(var f=0; f<files.length; f++) {
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importFile(files[f]);
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};
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};
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ImportWidget.prototype.storeTiddler = function(fields) {
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this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(fields,this.renderer.renderTree.wiki.getModificationFields()));
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};
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ImportWidget.prototype.generateTitle = function(baseTitle) {
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var c = 0;
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do {
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var title = baseTitle + (c ? " " + (c + 1) : "");
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c++;
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} while(this.renderer.renderTree.wiki.tiddlerExists(title));
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return title;
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};
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exports.import = ImportWidget;
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})();
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