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Code Issues Releases Wiki Activity

The big purge of the old widget mechanism

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Getting rid of the old widget mechanism files finally gives us a payoff
for all the refactoring. Still a bit of tidying up to do, and we need
to re-introduce the animation mechanisms.
This commit is contained in:
Jeremy Ruston
2013-10-27 22:55:36 +00:00
parent 5610efff01
commit 20f03de712
57 changed files with 39 additions and 5068 deletions
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203
core/modules/widgets/link.js
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@@ -1,203 +0,0 @@
/*\
title: $:/core/modules/widgets/link.js
type: application/javascript
module-type: widget
Implements the link widget.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var isLinkExternal = function(to) {
var externalRegExp = /(?:file|http|https|mailto|ftp|irc|news|data):[^\s'"]+(?:\/|\b)/i;
return externalRegExp.test(to);
};
var LinkWidget = function(renderer) {
// Save state
this.renderer = renderer;
// Generate child nodes
this.generate();
};
LinkWidget.prototype.generate = function() {
// Get the parameters from the attributes
this.to = this.renderer.getAttribute("to",this.renderer.tiddlerTitle);
this.hover = this.renderer.getAttribute("hover");
this.qualifyHoverTitles = this.renderer.getAttribute("qualifyHoverTitles");
// Qualify the hover tiddler title if needed
if(this.qualifyHoverTitles) {
this.hover = this.hover + "-" + this.renderer.renderTree.getContextScopeId(this.renderer.parentRenderer);
}
// Determine the default link characteristics
this.isExternal = isLinkExternal(this.to);
if(!this.isExternal) {
this.isMissing = !this.renderer.renderTree.wiki.tiddlerExists(this.to);
this.isShadow = this.renderer.renderTree.wiki.isShadowTiddler(this.to);
}
// Compose the link
var classes = ["tw-tiddlylink"]
if(this.isExternal) {
$tw.utils.pushTop(classes,"tw-tiddlylink-external");
} else {
$tw.utils.pushTop(classes,"tw-tiddlylink-internal");
if(this.isShadow) {
$tw.utils.pushTop(classes,"tw-tiddlylink-shadow");
}
if(this.isMissing && !this.isShadow) {
$tw.utils.pushTop(classes,"tw-tiddlylink-missing");
} else {
if(!this.isMissing) {
$tw.utils.pushTop(classes,"tw-tiddlylink-resolves");
}
}
}
var events = [
{name: "click", handlerObject: this, handlerMethod: "handleClickEvent"},
{name: "dragstart", handlerObject: this, handlerMethod: "handleDragStartEvent"},
{name: "dragend", handlerObject: this, handlerMethod: "handleDragEndEvent"}
];
if(this.hover) {
events.push({name: "mouseover", handlerObject: this, handlerMethod: "handleMouseOverOrOutEvent"});
events.push({name: "mouseout", handlerObject: this, handlerMethod: "handleMouseOverOrOutEvent"});
}
// Get the value of the tw-wikilinks configuration macro
var wikiLinksMacro = this.renderer.renderTree.findMacroDefinition(this.renderer.parentRenderer,"tw-wikilinks"),
useWikiLinks = wikiLinksMacro ? !(wikiLinksMacro.text.trim() === "no") : true;
// Set up the element
if(useWikiLinks) {
this.tag = "a";
this.attributes = {
"class": classes.join(" ")
};
if(this.isExternal) {
this.attributes.href = this.to;
} else {
var wikiLinkTemplateMacro = this.renderer.renderTree.findMacroDefinition(this.renderer.parentRenderer,"tw-wikilink-template"),
wikiLinkTemplate = wikiLinkTemplateMacro ? wikiLinkTemplateMacro.text.trim() : "#$uri_encoded$";
this.wikiLinkText = wikiLinkTemplate.replace("$uri_encoded$",encodeURIComponent(this.to));
this.wikiLinkText = this.wikiLinkText.replace("$uri_doubleencoded$",encodeURIComponent(encodeURIComponent(this.to)));
this.attributes.href = this.wikiLinkText;
}
this.events = events;
} else {
this.tag = "span";
}
this.children = this.renderer.renderTree.createRenderers(this.renderer,this.renderer.parseTreeNode.children);
};
LinkWidget.prototype.handleClickEvent = function(event) {
if(isLinkExternal(this.to)) {
event.target.setAttribute("target","_blank");
return true;
} else {
var bounds = this.renderer.domNode.getBoundingClientRect();
$tw.utils.dispatchCustomEvent(event.target,"tw-navigate",{
navigateTo: this.to,
navigateFromNode: this,
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;
}
};
LinkWidget.prototype.handleMouseOverOrOutEvent = function(event) {
if(this.hover) {
$tw.popup.triggerPopup({
title: this.hover,
domNode: this.renderer.domNode,
wiki: this.renderer.renderTree.wiki
});
}
event.preventDefault();
return false;
};
LinkWidget.prototype.handleDragStartEvent = function(event) {
if(this.to) {
// Set the dragging class on the element being dragged
$tw.utils.addClass(event.target,"tw-tiddlylink-dragging");
// Create the drag image elements
this.dragImage = this.renderer.renderTree.document.createElement("div");
this.dragImage.className = "tw-tiddler-dragger";
var inner = this.renderer.renderTree.document.createElement("div");
inner.className = "tw-tiddler-dragger-inner";
inner.appendChild(this.renderer.renderTree.document.createTextNode(this.to));
this.dragImage.appendChild(inner);
this.renderer.renderTree.document.body.appendChild(this.dragImage);
// Astoundingly, we need to cover the dragger up: http://www.kryogenix.org/code/browser/custom-drag-image.html
var bounds = this.dragImage.firstChild.getBoundingClientRect(),
cover = this.renderer.renderTree.document.createElement("div");
cover.className = "tw-tiddler-dragger-cover";
cover.style.left = (bounds.left - 8) + "px";
cover.style.top = (bounds.top - 8) + "px";
cover.style.width = (bounds.width + 16) + "px";
cover.style.height = (bounds.height + 16) + "px";
this.dragImage.appendChild(cover);
// Set the data transfer properties
var dataTransfer = event.dataTransfer;
dataTransfer.effectAllowed = "copy";
dataTransfer.setDragImage(this.dragImage.firstChild,-16,-16);
dataTransfer.clearData();
dataTransfer.setData("text/vnd.tiddler",this.renderer.renderTree.wiki.getTiddlerAsJson(this.to));
dataTransfer.setData("text/plain",this.renderer.renderTree.wiki.getTiddlerText(this.to,""));
event.stopPropagation();
} else {
event.preventDefault();
}
};
LinkWidget.prototype.handleDragEndEvent = function(event) {
// Remove the dragging class on the element being dragged
$tw.utils.removeClass(event.target,"tw-tiddlylink-dragging");
// Delete the drag image element
if(this.dragImage) {
this.dragImage.parentNode.removeChild(this.dragImage);
}
};
LinkWidget.prototype.postRenderInDom = function() {
// Add the draggable attribute to links (we don't include it in the static HTML representation)
if(this.renderer.domNode.tagName === "A") {
this.renderer.domNode.setAttribute("draggable",true);
}
};
LinkWidget.prototype.refreshInDom = function(changedAttributes,changedTiddlers) {
// Set the class for missing tiddlers
if(this.targetTitle && changedTiddlers[this.targetTitle]) {
$tw.utils.toggleClass(this.renderer.domNode,"tw-tiddler-missing",!this.renderer.renderTree.wiki.tiddlerExists(this.targetTitle));
}
// Check if any of our attributes have changed, or if a tiddler we're interested in has changed
if(changedAttributes.to || changedAttributes.hover || (this.to && changedTiddlers[this.to]) || (this.hover && changedTiddlers[this.hover])) {
// Regenerate and rerender the widget and replace the existing DOM node
this.generate();
var oldDomNode = this.renderer.domNode,
newDomNode = this.renderer.renderInDom();
oldDomNode.parentNode.replaceChild(newDomNode,oldDomNode);
} else {
// We don't need to refresh ourselves, so just refresh any child nodes
$tw.utils.each(this.children,function(node) {
if(node.refreshInDom) {
node.refreshInDom(changedTiddlers);
}
});
}
};
exports.link = LinkWidget;
})();