mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-24 02:27:19 +00:00
102 lines
3.0 KiB
JavaScript
Executable File
102 lines
3.0 KiB
JavaScript
Executable File
/*\
|
|
title: $:/core/modules/widgets/tiddler.js
|
|
type: application/javascript
|
|
module-type: widget
|
|
|
|
Tiddler widget
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
var Widget = require("$:/core/modules/widgets/widget.js").widget;
|
|
|
|
var TiddlerWidget = function(parseTreeNode,options) {
|
|
this.initialise(parseTreeNode,options);
|
|
};
|
|
|
|
/*
|
|
Inherit from the base widget class
|
|
*/
|
|
TiddlerWidget.prototype = new Widget();
|
|
|
|
/*
|
|
Render this widget into the DOM
|
|
*/
|
|
TiddlerWidget.prototype.render = function(parent,nextSibling) {
|
|
this.parentDomNode = parent;
|
|
this.computeAttributes();
|
|
this.execute();
|
|
this.renderChildren(parent,nextSibling);
|
|
};
|
|
|
|
/*
|
|
Compute the internal state of the widget
|
|
*/
|
|
TiddlerWidget.prototype.execute = function() {
|
|
this.tiddlerState = this.computeTiddlerState();
|
|
this.setVariable("currentTiddler",this.tiddlerState.currentTiddler);
|
|
this.setVariable("missingTiddlerClass",this.tiddlerState.missingTiddlerClass);
|
|
this.setVariable("shadowTiddlerClass",this.tiddlerState.shadowTiddlerClass);
|
|
this.setVariable("systemTiddlerClass",this.tiddlerState.systemTiddlerClass);
|
|
this.setVariable("tiddlerTagClasses",this.tiddlerState.tiddlerTagClasses);
|
|
// Construct the child widgets
|
|
this.makeChildWidgets();
|
|
};
|
|
|
|
/*
|
|
Compute the tiddler state flags
|
|
*/
|
|
TiddlerWidget.prototype.computeTiddlerState = function() {
|
|
// Get our parameters
|
|
this.tiddlerTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
|
|
// Compute the state
|
|
var state = {
|
|
currentTiddler: this.tiddlerTitle || "",
|
|
missingTiddlerClass: (this.wiki.tiddlerExists(this.tiddlerTitle) || this.wiki.isShadowTiddler(this.tiddlerTitle)) ? "tc-tiddler-exists" : "tc-tiddler-missing",
|
|
shadowTiddlerClass: this.wiki.isShadowTiddler(this.tiddlerTitle) ? "tc-tiddler-shadow" : "",
|
|
systemTiddlerClass: this.wiki.isSystemTiddler(this.tiddlerTitle) ? "tc-tiddler-system" : "",
|
|
tiddlerTagClasses: this.getTagClasses()
|
|
};
|
|
// Compute a simple hash to make it easier to detect changes
|
|
state.hash = state.currentTiddler + state.missingTiddlerClass + state.shadowTiddlerClass + state.systemTiddlerClass + state.tiddlerTagClasses;
|
|
return state;
|
|
};
|
|
|
|
/*
|
|
Create a string of CSS classes derived from the tags of the current tiddler
|
|
*/
|
|
TiddlerWidget.prototype.getTagClasses = function() {
|
|
var tiddler = this.wiki.getTiddler(this.tiddlerTitle);
|
|
if(tiddler) {
|
|
var tags = [];
|
|
$tw.utils.each(tiddler.fields.tags,function(tag) {
|
|
tags.push("tc-tagged-" + encodeURIComponent(tag));
|
|
});
|
|
return tags.join(" ");
|
|
} else {
|
|
return "";
|
|
}
|
|
};
|
|
|
|
/*
|
|
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
|
|
*/
|
|
TiddlerWidget.prototype.refresh = function(changedTiddlers) {
|
|
var changedAttributes = this.computeAttributes(),
|
|
newTiddlerState = this.computeTiddlerState();
|
|
if(changedAttributes.tiddler || newTiddlerState.hash !== this.tiddlerState.hash) {
|
|
this.refreshSelf();
|
|
return true;
|
|
} else {
|
|
return this.refreshChildren(changedTiddlers);
|
|
}
|
|
};
|
|
|
|
exports.tiddler = TiddlerWidget;
|
|
|
|
})();
|