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Code Issues Releases Wiki Activity

Add support for safe mode

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This commit is contained in:
Jermolene 2014-04-19 09:36:08 +01:00
parent 15d0c27e2a
commit ba576d9f1b
3 changed files with 63 additions and 1 deletions
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37
boot/boot.js
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@ -1044,6 +1044,37 @@ $tw.Wiki.prototype.defineShadowModules = function() {
});
};
/*
Enable safe mode by deleting any tiddlers that override a shadow tiddler
*/
$tw.Wiki.prototype.processSafeMode = function() {
var self = this,
overrides = [];
// Find the overriding tiddlers
this.each(function(tiddler,title) {
if(self.isShadowTiddler(title)) {
console.log(title);
overrides.push(title);
}
});
// Assemble a report tiddler
var titleReportTiddler = "TiddlyWiki Safe Mode",
report = [];
report.push("TiddlyWiki has been started in [[safe mode|http://tiddlywiki.com/static/SafeMode.html]]. Most customisations have been disabled by renaming the following tiddlers:")
// Delete the overrides
overrides.forEach(function(title) {
var tiddler = self.getTiddler(title),
newTitle = "SAFE: " + title;
self.deleteTiddler(title);
self.addTiddler(new $tw.Tiddler(tiddler, {title: newTitle}));
report.push("* [[" + title + "|" + newTitle + "]]");
});
report.push()
this.addTiddler(new $tw.Tiddler({title: titleReportTiddler, text: report.join("\n\n")}));
// Set $:/DefaultTiddlers to point to our report
this.addTiddler(new $tw.Tiddler({title: "$:/DefaultTiddlers", text: "[[" + titleReportTiddler + "]]"}));
};
/*
Extracts tiddlers from a typed block of text, specifying default field values
*/
@ -1563,6 +1594,8 @@ readBrowserTiddlers: whether to read tiddlers from the HTML file we're executing
*/
$tw.boot.startup = function(options) {
options = options || {};
// Check for safe mode
$tw.safeMode = $tw.browser && location.hash === "#:safe";
// Initialise some more $tw properties
$tw.utils.deepDefaults($tw,{
modules: { // Information about each module
@ -1646,6 +1679,10 @@ $tw.boot.startup = function(options) {
$tw.wiki.readPluginInfo();
$tw.wiki.registerPluginTiddlers("plugin");
$tw.wiki.unpackPluginTiddlers();
// Process "safe mode"
if($tw.safeMode) {
$tw.wiki.processSafeMode();
}
// Register typed modules from the tiddlers we've just loaded
$tw.wiki.defineTiddlerModules();
// And any modules within plugins

6
editions/tw5.com/tiddlers/Upgrading.tid
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@ -1,5 +1,5 @@
created: 20131202102427114
modified: 20140126135354379
modified: 20140419082835626
tags: howto
title: Upgrading
type: text/vnd.tiddlywiki
@ -47,3 +47,7 @@ This will download a file called ''empty.html'' to your computer. This file is t
! Offline upgrading
You can also download http://tiddlywiki.com/empty.html locally and perform the same drag-and-drop procedure to upgrade your files.
! Problems with Upgrades
Particularly during the beta, it is possible for a customisation applied in a previous version to break when upgraded to the latest version. Use SafeMode to investigate and fix these problems.

21
editions/tw5.com/tiddlers/features/SafeMode.tid Normal file
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@ -0,0 +1,21 @@
created: 20140419082845576
modified: 20140419083436245
tags: features
title: SafeMode
type: text/vnd.tiddlywiki
! Introduction
Safe mode provides a way to disabling most customisations in TiddlyWiki. This is useful because if TiddlyWiki is customised incorrectly it can be rendered inoperable. A particular issue is that some customisations break when upgrading to a newer core version of TiddlyWiki (especially during the beta).
! Enabling Safe Mode
Safe mode is enabled in the browser by starting TiddlyWiki with the URL hash set to the string `#:safe`. For example:
http://tiddlywiki.com/#:safe
! How Safe Mode Works
In safe mode, any tiddlers that override shadow tiddlers are renamed to give them the prefix `SAFE: `, thus restoring the underlying shadow tiddler.
A report tiddler is displayed that allows you to inspect the tiddlers that were renamed.