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Code Issues Releases Wiki Activity

Added linkMassager callback

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This commit is contained in:
Jeremy Ruston 2012-04-03 17:07:38 +01:00
parent b44f6b47cc
commit d13e2bacaf
2 changed files with 56 additions and 15 deletions
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6
js/App.js
View File

@ -96,6 +96,12 @@ var App = function() {
this.store.installMacro(require("./macros/video.js").macro);
this.store.installMacro(require("./macros/view.js").macro);
this.store.installMacro(require("./macros/zoomer.js").macro);
// Install the default link massager
this.store.linkMassager = function(linkInfo) {
if(!linkInfo.isExternal) {
linkInfo.target = encodeURIComponent(linkInfo.target);
}
};
// Set up navigation if we're in the browser
if(this.isBrowser) {
// Open the PageTemplate

65
js/macros/link.js
View File

@ -1,6 +1,25 @@
/*\
title: js/macros/link.js
Implements the link macro.
A special callback function is used to massage links according to the needs of the host platform.
The linkMassager is stored in the `linkMassager` property of the store object. It is a function
that takes a `linkInfo` structure as the only parameter. It contains a hashmap of information
as follows:
{
target: the target of the link
space: an optional space associated with the link
isExternal: true if the link has been determined to be an external link by the default heuristics
isMissing: true if a non-external link references a missing tiddler
classes: an array of strings representing the CSS classes to be applied to the link. The default classes are already applied
href: the href to be used in the link
}
The linkMassager can modify the `classes` and `href` fields as required.
\*/
(function(){
@ -17,7 +36,8 @@ var isLinkExternal = function(target) {
exports.macro = {
name: "link",
params: {
target: {byName: "default", type: "tiddler", skinny: true}
target: {byName: "default", type: "tiddler", skinny: true},
space: {byName: true, type: "text"}
},
events: {
click: function(event) {
@ -35,23 +55,38 @@ exports.macro = {
}
},
execute: function() {
var classes = ["tw-tiddlylink"],
target = this.params.target;
if(isLinkExternal(target)) {
classes.push("tw-tiddlylink-external");
} else {
classes.push("tw-tiddlylink-internal");
if(this.store.tiddlerExists(target)) {
classes.push("tw-tiddlylink-resolves");
} else {
classes.push("tw-tiddlylink-missing");
}
target = encodeURIComponent(target);
// Assemble the information about the link
var linkInfo = {
target: this.params.target,
space: this.params.space
};
// Generate the default link characteristics
linkInfo.isExternal = isLinkExternal(linkInfo.target);
if(!linkInfo.isExternal) {
linkInfo.isMissing = !this.store.tiddlerExists(linkInfo.target);
}
linkInfo.href = encodeURIComponent(linkInfo.target);
// Generate the default classes for the link
linkInfo.classes = ["tw-tiddlylink"];
if(linkInfo.isExternal) {
linkInfo.classes.push("tw-tiddlylink-external");
} else {
linkInfo.classes.push("tw-tiddlylink-internal");
if(linkInfo.isMissing) {
linkInfo.classes.push("tw-tiddlylink-missing");
} else {
linkInfo.classes.push("tw-tiddlylink-resolves");
}
}
// Invoke the link massager if defined
if(this.store.linkMassager) {
this.store.linkMassager(linkInfo);
}
// Figure out the classes to assign to the link
var content = [Renderer.ElementNode(
"a",{
href: target,
"class": classes
href: linkInfo.target,
"class": linkInfo.classes
},this.cloneChildren())];
for(var t=0; t<content.length; t++) {
content[t].execute(this.parents,this.tiddlerTitle);