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Code Issues Releases Wiki Activity

Refactor the theme switcher to be a generic plugin switcher

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This commit is contained in:
Jermolene 2014-02-08 09:29:37 +00:00
parent b26a32b93a
commit 8ad34e2db9
2 changed files with 42 additions and 32 deletions
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62
core/modules/themes.js → core/modules/pluginswitcher.js
View File

@ -1,9 +1,9 @@
/*\
title: $:/core/modules/themes.js
title: $:/core/modules/pluginswitcher.js
type: application/javascript
module-type: global
Manages themes and styling.
Manages switching plugins for themes and lingo.
\*/
(function(){
@ -12,42 +12,44 @@ Manages themes and styling.
/*global $tw: false */
"use strict";
var THEME_PLUGIN_TITLE = "$:/theme", // This tiddler contains the title of the current theme plugin
DEFAULT_THEME_PLUGINS = [
"$:/themes/tiddlywiki/snowwhite",
"$:/themes/tiddlywiki/vanilla"
];
function ThemeManager(wiki) {
this.wiki = wiki;
// There's no theme to start with
this.currentThemeTitle = undefined;
// Switch to the current theme
this.switchTheme();
// Listen for changes to the theme
/*
options:
wiki: wiki store to be used
pluginType: type of plugin to be switched
controllerTitle: title of tiddler used to control switching of this resource
defaultPlugins: array of default plugins to be used if nominated plugin isn't found
*/
function PluginSwitcher(options) {
this.wiki = options.wiki;
this.pluginType = options.pluginType;
this.controllerTitle = options.controllerTitle;
this.defaultPlugins = options.defaultPlugins || [];
// Switch to the current plugin
this.switchPlugins();
// Listen for changes to the selected plugin
var self = this;
this.wiki.addEventListener("change",function(changes) {
if($tw.utils.hop(changes,THEME_PLUGIN_TITLE)) {
self.switchTheme();
if($tw.utils.hop(changes,self.controllerTitle)) {
self.switchPlugins();
}
});
}
ThemeManager.prototype.switchTheme = function() {
PluginSwitcher.prototype.switchPlugins = function() {
// Get the name of the current theme
var themePluginTitle = this.wiki.getTiddlerText(THEME_PLUGIN_TITLE);
var selectedPluginTitle = this.wiki.getTiddlerText(this.controllerTitle);
// If it doesn't exist, then fallback to one of the default themes
var index = 0;
while(!this.wiki.getTiddler(themePluginTitle) && index < DEFAULT_THEME_PLUGINS.length) {
themePluginTitle = DEFAULT_THEME_PLUGINS[index++];
while(!this.wiki.getTiddler(selectedPluginTitle) && index < this.defaultPlugins.length) {
selectedPluginTitle = this.defaultPlugins[index++];
}
// Accumulate the titles of the plugins that we need to load
var themePlugins = [],
var plugins = [],
self = this,
accumulatePlugin = function(title) {
var tiddler = self.wiki.getTiddler(title);
if(tiddler && tiddler.isPlugin() && themePlugins.indexOf(title) === -1) {
themePlugins.push(title);
if(tiddler && tiddler.isPlugin() && plugins.indexOf(title) === -1) {
plugins.push(title);
var pluginInfo = JSON.parse(self.wiki.getTiddlerText(title)),
dependents = $tw.utils.parseStringArray(tiddler.fields.dependents || "");
$tw.utils.each(dependents,function(title) {
@ -55,23 +57,23 @@ ThemeManager.prototype.switchTheme = function() {
});
}
};
accumulatePlugin(themePluginTitle);
accumulatePlugin(selectedPluginTitle);
// Unregister any existing theme tiddlers
var unregisteredThemeTiddlers = $tw.wiki.unregisterPluginTiddlers("theme");
var unregisteredTiddlers = $tw.wiki.unregisterPluginTiddlers(this.pluginType);
// Accumulate the titles of shadow tiddlers that have changed as a result of this switch
var changedTiddlers = {};
$tw.utils.each(this.wiki.shadowTiddlers,function(shadowInfo,title) {
if(unregisteredThemeTiddlers.indexOf(shadowInfo.source) !== -1) {
if(unregisteredTiddlers.indexOf(shadowInfo.source) !== -1) {
changedTiddlers[title] = true; // isDeleted?
}
});
// Register any new theme tiddlers
var registeredThemeTiddlers = $tw.wiki.registerPluginTiddlers("theme",themePlugins);
var registeredTiddlers = $tw.wiki.registerPluginTiddlers(this.pluginType,plugins);
// Unpack the current theme tiddlers
$tw.wiki.unpackPluginTiddlers();
// Accumulate the affected shadow tiddlers
$tw.utils.each(this.wiki.shadowTiddlers,function(shadowInfo,title) {
if(registeredThemeTiddlers.indexOf(shadowInfo.source) !== -1) {
if(registeredTiddlers.indexOf(shadowInfo.source) !== -1) {
changedTiddlers[title] = false; // isDeleted?
}
});
@ -81,6 +83,6 @@ ThemeManager.prototype.switchTheme = function() {
});
};
exports.ThemeManager = ThemeManager;
exports.PluginSwitcher = PluginSwitcher;
})();

12
core/modules/startup.js
View File

@ -39,7 +39,15 @@ exports.startup = function() {
// Set up the command modules
$tw.Commander.initCommands();
// Kick off the theme manager
$tw.themeManager = new $tw.ThemeManager($tw.wiki);
$tw.themeManager = new $tw.PluginSwitcher({
wiki: $tw.wiki,
pluginType: "theme",
controllerTitle: "$:/theme",
defaultPlugins: [
"$:/themes/tiddlywiki/snowwhite",
"$:/themes/tiddlywiki/vanilla"
]
});
// Get the default tiddlers
var defaultTiddlersTitle = "$:/DefaultTiddlers",
defaultTiddlersTiddler = $tw.wiki.getTiddler(defaultTiddlersTitle),
@ -63,7 +71,7 @@ exports.startup = function() {
confirmationMessage = "You have unsaved changes in TiddlyWiki";
event.returnValue = confirmationMessage; // Gecko
}
return confirmationMessage; // Webkit, Safari, Chrome etc.
return confirmationMessage;
});
// Install the popup manager
$tw.popup = new $tw.utils.Popup({