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TiddlyWiki5/core/modules/startup/rootwidget.js
2014-05-05 17:06:24 +01:00

79 lines
2.1 KiB
JavaScript

/*\
title: $:/core/modules/startup/rootwidget.js
type: application/javascript
module-type: startup
Setup the root widget and the core root widget handlers
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
// Export name and synchronous status
exports.name = "rootwidget";
exports.platforms = ["browser"];
exports.after = ["load-modules"];
exports.before = ["story"];
exports.synchronous = true;
var widget = require("$:/core/modules/widgets/widget.js");
exports.startup = function() {
// Create a root widget for attaching event handlers. By using it as the parentWidget for another widget tree, one can reuse the event handlers
$tw.rootWidget = new widget.widget({
type: "widget",
children: []
},{
wiki: $tw.wiki,
document: document
});
// Install the modal message mechanism
$tw.modal = new $tw.utils.Modal($tw.wiki);
$tw.rootWidget.addEventListener("tw-modal",function(event) {
$tw.modal.display(event.param);
});
// Install the notification mechanism
$tw.notifier = new $tw.utils.Notifier($tw.wiki);
$tw.rootWidget.addEventListener("tw-notify",function(event) {
$tw.notifier.display(event.param);
});
// Install the scroller
$tw.pageScroller = new $tw.utils.PageScroller();
$tw.rootWidget.addEventListener("tw-scroll",function(event) {
$tw.pageScroller.handleEvent(event);
});
// Install the save action handlers
$tw.rootWidget.addEventListener("tw-save-wiki",function(event) {
$tw.syncer.saveWiki({
template: event.param,
downloadType: "text/plain"
});
});
$tw.rootWidget.addEventListener("tw-auto-save-wiki",function(event) {
$tw.syncer.saveWiki({
method: "autosave",
template: event.param,
downloadType: "text/plain"
});
});
$tw.rootWidget.addEventListener("tw-download-file",function(event) {
$tw.syncer.saveWiki({
method: "download",
template: event.param,
downloadType: "text/plain"
});
});
// If we're being viewed on a data: URI then give instructions for how to save
if(document.location.protocol === "data:") {
$tw.rootWidget.dispatchEvent({
type: "tw-modal",
param: "$:/language/Modals/SaveInstructions"
});
}
};
})();