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TiddlyWiki5/editions/tw2/source/tiddlywiki/js/main.js

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JavaScript
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//--
//-- Main
//--
var params = null; // Command line parameters
var store = null; // TiddlyWiki storage
var story = null; // Main story
var formatter = null; // Default formatters for the wikifier
var anim = typeof Animator == "function" ? new Animator() : null; // Animation engine
var readOnly = false; // Whether we're in readonly mode
var highlightHack = null; // Embarrassing hack department...
var hadConfirmExit = false; // Don't warn more than once
var safeMode = false; // Disable all plugins and cookies
var showBackstage; // Whether to include the backstage area
var installedPlugins = []; // Information filled in when plugins are executed
var startingUp = false; // Whether we're in the process of starting up
var pluginInfo,tiddler; // Used to pass information to plugins in loadPlugins()
// Whether to use the JavaSaver applet
var useJavaSaver = (config.browser.isSafari || config.browser.isOpera) && (document.location.toString().substr(0,4) != "http");
if(!window || !window.console) {
console = {tiddlywiki:true,log:function(message) {displayMessage(message);}};
}
// Starting up
function main()
{
var t10,t9,t8,t7,t6,t5,t4,t3,t2,t1,t0 = new Date();
startingUp = true;
var doc = jQuery(document);
jQuery.noConflict();
window.onbeforeunload = function(e) {if(window.confirmExit) return confirmExit();};
params = getParameters();
if(params)
params = params.parseParams("open",null,false);
store = new TiddlyWiki({config:config});
invokeParamifier(params,"oninit");
story = new Story("tiddlerDisplay","tiddler");
addEvent(document,"click",Popup.onDocumentClick);
saveTest();
var s;
for(s=0; s<config.notifyTiddlers.length; s++)
store.addNotification(config.notifyTiddlers[s].name,config.notifyTiddlers[s].notify);
t1 = new Date();
loadShadowTiddlers();
doc.trigger("loadShadows");
t2 = new Date();
store.loadFromDiv("storeArea","store",true);
doc.trigger("loadTiddlers");
loadOptions();
t3 = new Date();
invokeParamifier(params,"onload");
t4 = new Date();
readOnly = (window.location.protocol == "file:") ? false : config.options.chkHttpReadOnly;
var pluginProblem = loadPlugins("systemConfig");
doc.trigger("loadPlugins");
t5 = new Date();
formatter = new Formatter(config.formatters);
invokeParamifier(params,"onconfig");
story.switchTheme(config.options.txtTheme);
showBackstage = showBackstage !== undefined ? showBackstage : !readOnly;
t6 = new Date();
var m;
for(m in config.macros) {
if(config.macros[m].init)
config.macros[m].init();
}
t7 = new Date();
store.notifyAll();
t8 = new Date();
restart();
refreshDisplay();
t9 = new Date();
if(pluginProblem) {
story.displayTiddler(null,"PluginManager");
displayMessage(config.messages.customConfigError);
}
if(showBackstage)
backstage.init();
t10 = new Date();
if(config.options.chkDisplayInstrumentation) {
displayMessage("LoadShadows " + (t2-t1) + " ms");
displayMessage("LoadFromDiv " + (t3-t2) + " ms");
displayMessage("LoadPlugins " + (t5-t4) + " ms");
displayMessage("Macro init " + (t7-t6) + " ms");
displayMessage("Notify " + (t8-t7) + " ms");
displayMessage("Restart " + (t9-t8) + " ms");
displayMessage("Total: " + (t10-t0) + " ms");
}
startingUp = false;
doc.trigger("startup");
}
// Called on unload. All functions called conditionally since they themselves may have been unloaded.
function unload()
{
if(window.checkUnsavedChanges)
checkUnsavedChanges();
if(window.scrubNodes)
scrubNodes(document.body);
}
// Restarting
function restart()
{
invokeParamifier(params,"onstart");
if(story.isEmpty()) {
story.displayDefaultTiddlers();
}
window.scrollTo(0,0);
}
function saveTest()
{
var s = document.getElementById("saveTest");
if(s.hasChildNodes())
alert(config.messages.savedSnapshotError);
s.appendChild(document.createTextNode("savetest"));
}
function loadShadowTiddlers()
{
var shadows = new TiddlyWiki();
shadows.loadFromDiv("shadowArea","shadows",true);
shadows.forEachTiddler(function(title,tiddler){config.shadowTiddlers[title] = tiddler.text;});
}
function loadPlugins(tag)
{
if(safeMode)
return false;
var tiddlers = store.getTaggedTiddlers(tag);
//# ensure the plugins are sorted into case sensitive order
tiddlers.sort(function(a,b) {return a.title < b.title ? -1 : (a.title == b.title ? 0 : 1);});
var toLoad = [];
var nLoaded = 0;
var map = {};
var nPlugins = tiddlers.length;
installedPlugins = [];
var i;
for(i=0; i<nPlugins; i++) {
var p = getPluginInfo(tiddlers[i]);
installedPlugins[i] = p;
var n = p.Name || p.title;
if(n)
map[n] = p;
n = p.Source;
if(n)
map[n] = p;
}
var visit = function(p) {
if(!p || p.done)
return;
p.done = 1;
var reqs = p.Requires;
if(reqs) {
reqs = reqs.readBracketedList();
var i;
for(i=0; i<reqs.length; i++)
visit(map[reqs[i]]);
}
toLoad.push(p);
};
for(i=0; i<nPlugins; i++)
visit(installedPlugins[i]);
for(i=0; i<toLoad.length; i++) {
p = toLoad[i];
pluginInfo = p;
tiddler = p.tiddler;
if(isPluginExecutable(p)) {
if(isPluginEnabled(p)) {
p.executed = true;
var startTime = new Date();
try {
if(tiddler.text)
window.eval(tiddler.text);
nLoaded++;
} catch(ex) {
p.log.push(config.messages.pluginError.format([exceptionText(ex)]));
p.error = true;
if(!console.tiddlywiki) {
console.log("error evaluating " + tiddler.title, ex);
}
}
pluginInfo.startupTime = String((new Date()) - startTime) + "ms";
} else {
nPlugins--;
}
} else {
p.warning = true;
}
}
return nLoaded != nPlugins;
}
function getPluginInfo(tiddler)
{
var p = store.getTiddlerSlices(tiddler.title,["Name","Description","Version","Requires","CoreVersion","Date","Source","Author","License","Browsers"]);
p.tiddler = tiddler;
p.title = tiddler.title;
p.log = [];
return p;
}
// Check that a particular plugin is valid for execution
function isPluginExecutable(plugin)
{
if(plugin.tiddler.isTagged("systemConfigForce")) {
plugin.log.push(config.messages.pluginForced);
return true;
}
if(plugin["CoreVersion"]) {
var coreVersion = plugin["CoreVersion"].split(".");
var w = parseInt(coreVersion[0],10) - version.major;
if(w == 0 && coreVersion[1])
w = parseInt(coreVersion[1],10) - version.minor;
if(w == 0 && coreVersion[2])
w = parseInt(coreVersion[2],10) - version.revision;
if(w > 0) {
plugin.log.push(config.messages.pluginVersionError);
return false;
}
}
return true;
}
function isPluginEnabled(plugin)
{
if(plugin.tiddler.isTagged("systemConfigDisable")) {
plugin.log.push(config.messages.pluginDisabled);
return false;
}
return true;
}