Stackedit/js/extension-manager.js
2013-05-26 11:32:42 +01:00

131 lines
4.6 KiB
JavaScript

define( [
"jquery",
"utils",
"underscore",
"bootstrap",
"extensions/notifications",
"extensions/markdown-extra",
"extensions/toc",
"extensions/math-jax",
"extensions/scroll-link"
], function($, utils) {
var extensionManager = {};
// Create a map with providerId: providerObject
var extensionList = _.chain(arguments)
.map(function(argument) {
return _.isObject(argument) && argument.extensionId && argument;
}).compact().value();
// Return every named callbacks implemented in extensions
function getExtensionCallbackList(callbackName) {
return _.chain(extensionList)
.map(function(extension) {
return extension.config.enabled && extension[callbackName];
}).compact().value();
}
// Return a function that calls every callbacks from extensions
function createCallback(callbackName) {
var callbackList = getExtensionCallbackList(callbackName);
return function() {
var callbackArguments = arguments;
_.each(callbackList, function(callback) {
callback.apply(null, callbackArguments);
});
};
}
// Add a callback to the extensionManager
function addCallback(callbackName) {
extensionManager[callbackName] = createCallback(callbackName);
}
var accordionTmpl = [
'<div class="accordion-group">',
'<div class="accordion-heading">',
'<label class="checkbox pull-right">',
'<input id="input-enable-extension-<%= extensionId %>" type="checkbox" <% if(!optional) { %> disabled <% } %>> enabled',
'</label>',
'<a id="accordion-toggle-test" data-toggle="collapse" data-parent="#accordion-extensions" class="accordion-toggle" href="#collapse-<%= extensionId %>">',
'<%= extensionName %>',
'</a>',
'</div>',
'<div id="collapse-<%= extensionId %>" class="accordion-body collapse">',
'<div class="accordion-inner"><%= settingsBloc %></div>',
'</div>',
'</div>'].join("");
function createSettings(extension) {
$("#accordion-extensions").append($(_.template(accordionTmpl, {
extensionId: extension.extensionId,
extensionName: extension.extensionName,
optional: extension.optional,
settingsBloc: extension.settingsBloc
})));
}
extensionManager.init = function(extensionSettings) {
// Set extension config
extensionSettings = extensionSettings || {};
_.each(extensionList, function(extension) {
extension.config = _.extend({}, extension.defaultConfig, extensionSettings[extension.extensionId]);
extension.config.enabled = !extension.optional || extension.config.enabled === undefined || extension.config.enabled === true;
});
// Create accordion in settings dialog
_.each(extensionList, createSettings);
// Load/Save extension config from/to settings
addCallback("onLoadSettings");
extensionManager["onLoadSettings"] = function() {
_.each(extensionList, function(extension) {
utils.setInputChecked("#input-enable-extension-" + extension.extensionId, extension.config.enabled);
var onLoadSettingsCallback = extension.onLoadSettings;
onLoadSettingsCallback && onLoadSettingsCallback();
});
};
extensionManager["onSaveSettings"] = function(newExtensionSettings, event) {
_.each(extensionList, function(extension) {
var newExtensionConfig = extension.defaultConfig || {};
newExtensionConfig.enabled = utils.getInputChecked("#input-enable-extension-" + extension.extensionId);
var onSaveSettingsCallback = extension.onSaveSettings;
onSaveSettingsCallback && onSaveSettingsCallback(newExtensionConfig, event);
newExtensionSettings[extension.extensionId] = newExtensionConfig;
});
};
addCallback("onMessage");
addCallback("onError");
addCallback("onOfflineChanged");
addCallback("onLayoutConfigure");
addCallback("onLayoutCreated");
addCallback("onEditorConfigure");
var onPreviewFinished = createCallback("onPreviewFinished");
var onAsyncPreviewCallbackList = getExtensionCallbackList("onAsyncPreview");
extensionManager["onAsyncPreview"] = function() {
// Call onPreviewFinished callbacks when all async preview are finished
var counter = 0;
function tryFinished() {
if(counter === onAsyncPreviewCallbackList.length) {
onPreviewFinished();
}
}
_.each(onAsyncPreviewCallbackList, function(asyncPreviewCallback) {
asyncPreviewCallback(function() {
counter++;
tryFinished();
});
});
tryFinished();
};
// Call onReady callbacks
createCallback("onReady")();
};
return extensionManager;
});