mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-09-12 07:19:44 +00:00
112 lines
2.9 KiB
JavaScript
Executable File
112 lines
2.9 KiB
JavaScript
Executable File
/*\
|
|
title: $:/core/modules/new_widgets/link.js
|
|
type: application/javascript
|
|
module-type: new_widget
|
|
|
|
Link widget
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
var Widget = require("$:/core/modules/new_widgets/widget.js").widget;
|
|
|
|
var LinkWidget = function(parseTreeNode,options) {
|
|
this.initialise(parseTreeNode,options);
|
|
};
|
|
|
|
/*
|
|
Inherit from the base widget class
|
|
*/
|
|
LinkWidget.prototype = new Widget();
|
|
|
|
/*
|
|
Render this widget into the DOM
|
|
*/
|
|
LinkWidget.prototype.render = function(parent,nextSibling) {
|
|
var self = this;
|
|
// Save the parent dom node
|
|
this.parentDomNode = parent;
|
|
// Compute our attributes
|
|
this.computeAttributes();
|
|
// Execute our logic
|
|
this.execute();
|
|
// Create our element
|
|
var domNode = this.document.createElement("a");
|
|
// Assign classes
|
|
$tw.utils.addClass(domNode,"tw-tiddlylink");
|
|
if(this.isShadow) {
|
|
$tw.utils.addClass(domNode,"tw-tiddlylink-shadow");
|
|
}
|
|
if(this.isMissing && !this.isShadow) {
|
|
$tw.utils.addClass(domNode,"tw-tiddlylink-missing");
|
|
} else {
|
|
if(!this.isMissing) {
|
|
$tw.utils.addClass(domNode,"tw-tiddlylink-resolves");
|
|
}
|
|
}
|
|
// Set an href
|
|
domNode.setAttribute("href",this.to);
|
|
// Add a click event handler
|
|
domNode.addEventListener("click",function (event) {
|
|
// Send the click on it's way as a navigate event
|
|
var bounds = domNode.getBoundingClientRect();
|
|
self.dispatchEvent({
|
|
type: "tw-navigate",
|
|
navigateTo: self.to,
|
|
navigateFromNode: self,
|
|
navigateFromClientRect: { top: bounds.top, left: bounds.left, width: bounds.width, right: bounds.right, bottom: bounds.bottom, height: bounds.height
|
|
}
|
|
});
|
|
event.preventDefault();
|
|
event.stopPropagation();
|
|
return false;
|
|
},false);
|
|
// Insert the link into the DOM and render any children
|
|
parent.insertBefore(domNode,nextSibling);
|
|
this.renderChildren(domNode,null);
|
|
this.domNodes.push(domNode);
|
|
};
|
|
|
|
/*
|
|
Compute the internal state of the widget
|
|
*/
|
|
LinkWidget.prototype.execute = function() {
|
|
// Get the target tiddler title
|
|
this.to = this.getAttribute("to",this.getVariable("tiddlerTitle"));
|
|
// Determine the link characteristics
|
|
this.isMissing = !this.wiki.tiddlerExists(this.to);
|
|
this.isShadow = this.wiki.isShadowTiddler(this.to);
|
|
// Make the child widgets
|
|
this.makeChildWidgets();
|
|
};
|
|
|
|
/*
|
|
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
|
|
*/
|
|
LinkWidget.prototype.refresh = function(changedTiddlers) {
|
|
var changedAttributes = this.computeAttributes();
|
|
if(changedAttributes.to || changedTiddlers[this.to]) {
|
|
this.refreshSelf();
|
|
return true;
|
|
}
|
|
return this.refreshChildren(changedTiddlers);
|
|
};
|
|
|
|
/*
|
|
Remove any DOM nodes created by this widget or its children
|
|
*/
|
|
LinkWidget.prototype.removeChildDomNodes = function() {
|
|
$tw.utils.each(this.domNodes,function(domNode) {
|
|
domNode.parentNode.removeChild(domNode);
|
|
});
|
|
this.domNodes = [];
|
|
};
|
|
|
|
exports.link = LinkWidget;
|
|
|
|
})();
|