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Code Issues Releases Wiki Activity

Extend link widget with additional attributes

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Add “tabindex”, “draggable” and “tag” attributes
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Jermolene 2015-02-23 11:23:44 +01:00
commit 950a86c7b7
2 changed files with 29 additions and 11 deletions
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23
core/modules/widgets/link.js
View File

@ -53,8 +53,13 @@ Render this widget into the DOM
*/
LinkWidget.prototype.renderLink = function(parent,nextSibling) {
var self = this;
// Sanitise the specified tag
var tag = this.linkTag;
if($tw.config.htmlUnsafeElements.indexOf(tag) !== -1) {
tag = "a";
}
// Create our element
var domNode = this.document.createElement("a");
var domNode = this.document.createElement(tag);
// Assign classes
var classes = [];
if(this.linkClasses) {
@ -78,7 +83,10 @@ LinkWidget.prototype.renderLink = function(parent,nextSibling) {
wikiLinkText = wikiLinkTemplate.replace("$uri_encoded$",encodeURIComponent(this.to));
wikiLinkText = wikiLinkText.replace("$uri_doubleencoded$",encodeURIComponent(encodeURIComponent(this.to)));
wikiLinkText = this.getVariable("tv-get-export-link",{params: [{name: "to",value: this.to}],defaultValue: wikiLinkText});
if(tag === "a") {
domNode.setAttribute("href",wikiLinkText);
}
domNode.setAttribute("tabindex",this.tabIndex);
// Set the tooltip
// HACK: Performance issues with re-parsing the tooltip prevent us defaulting the tooltip to "<$transclude field='tooltip'><$transclude field='title'/></$transclude>"
var tooltipWikiText = this.tooltip || this.getVariable("tv-wikilink-tooltip");
@ -98,9 +106,13 @@ LinkWidget.prototype.renderLink = function(parent,nextSibling) {
// Add a click event handler
$tw.utils.addEventListeners(domNode,[
{name: "click", handlerObject: this, handlerMethod: "handleClickEvent"},
]);
if(this.draggable === "yes") {
$tw.utils.addEventListeners(domNode,[
{name: "dragstart", handlerObject: this, handlerMethod: "handleDragStartEvent"},
{name: "dragend", handlerObject: this, handlerMethod: "handleDragEndEvent"}
]);
}
// Insert the link into the DOM and render any children
parent.insertBefore(domNode,nextSibling);
this.renderChildren(domNode,null);
@ -119,9 +131,11 @@ LinkWidget.prototype.handleClickEvent = function(event) {
},
navigateSuppressNavigation: event.metaKey || event.ctrlKey || (event.button === 1)
});
if(this.domNodes[0].hasAttribute("href")) {
event.preventDefault();
event.stopPropagation();
return false;
}
};
LinkWidget.prototype.handleDragStartEvent = function(event) {
@ -189,13 +203,14 @@ LinkWidget.prototype.handleDragEndEvent = function(event) {
Compute the internal state of the widget
*/
LinkWidget.prototype.execute = function() {
// Get the target tiddler title
// Pick up our attributes
this.to = this.getAttribute("to",this.getVariable("currentTiddler"));
// Get the link title and aria label
this.tooltip = this.getAttribute("tooltip");
this["aria-label"] = this.getAttribute("aria-label");
// Get the link classes
this.linkClasses = this.getAttribute("class");
this.tabIndex = this.getAttribute("tabindex");
this.draggable = this.getAttribute("draggable","yes");
this.linkTag = this.getAttribute("tag","a");
// Determine the link characteristics
this.isMissing = !this.wiki.tiddlerExists(this.to);
this.isShadow = this.wiki.isShadowTiddler(this.to);

5
editions/tw5.com/tiddlers/widgets/LinkWidget.tid
View File

@ -1,6 +1,6 @@
title: LinkWidget
created: 201310241419
modified: 201408280837
modified: 201502231037
tags: Widgets
caption: link
@ -12,6 +12,9 @@ The `link` widget generates links to tiddlers. (Use the HTML `<a>` element to ge
|to |The title of the target tiddler for the link (defaults to the CurrentTiddler) |
|aria-label |Optional [[Accessibility]] label |
|tooltip |Optional tooltip WikiText |
|tabindex |Optional numeric [[tabindex|https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/tabIndex]] |
|draggable |"yes" to enable the link to be draggable (defaults to "yes") |
|tag |Optional tag to override the default "a" element |
The content of the link widget is rendered within the `<a>` tag.