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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-11-24 18:47:20 +00:00
TiddlyWiki5/editions/tw2/source/tiddlywiki/js/TiddlyWiki.js
2012-11-16 21:20:27 +00:00

646 lines
17 KiB
JavaScript
Executable File

//--
//-- TiddlyWiki instance contains TiddlerS
//--
function TiddlyWiki(params)
{
var tiddlers = {}; // Hashmap by name of tiddlers
if(params && params.config) {
this.config = config;
}
this.tiddlersUpdated = false;
this.namedNotifications = []; // Array of {name:,notify:} of notification functions
this.notificationLevel = 0;
this.slices = {}; // map tiddlerName->(map sliceName->sliceValue). Lazy.
this.clear = function() {
tiddlers = {};
this.setDirty(false);
};
this.fetchTiddler = function(title) {
var t = tiddlers[title];
return t instanceof Tiddler ? t : null;
};
this.deleteTiddler = function(title) {
delete this.slices[title];
delete tiddlers[title];
};
this.addTiddler = function(tiddler) {
delete this.slices[tiddler.title];
tiddlers[tiddler.title] = tiddler;
};
this.forEachTiddler = function(callback) {
var t;
for(t in tiddlers) {
var tiddler = tiddlers[t];
if(tiddler instanceof Tiddler)
callback.call(this,t,tiddler);
}
};
}
//# Set the dirty flag
TiddlyWiki.prototype.setDirty = function(dirty)
{
this.dirty = dirty;
};
TiddlyWiki.prototype.isDirty = function()
{
return this.dirty;
};
TiddlyWiki.prototype.tiddlerExists = function(title)
{
var t = this.fetchTiddler(title);
return t != undefined;
};
TiddlyWiki.prototype.isShadowTiddler = function(title)
{
return config.shadowTiddlers[title] === undefined ? false : true;
};
TiddlyWiki.prototype.createTiddler = function(title)
{
var tiddler = this.fetchTiddler(title);
if(!tiddler) {
tiddler = new Tiddler(title);
this.addTiddler(tiddler);
this.setDirty(true);
}
return tiddler;
};
TiddlyWiki.prototype.getTiddler = function(title)
{
var t = this.fetchTiddler(title);
if(t != undefined)
return t;
else
return null;
};
TiddlyWiki.prototype.getShadowTiddlerText = function(title)
{
if(typeof config.shadowTiddlers[title] == "string")
return config.shadowTiddlers[title];
else
return "";
};
// Retrieve tiddler contents
//# Supports tiddler slices or sections, encoded in {{{title}}} argument using
//# the respective separator characters ({{{::}}} or {{{##}}}).
TiddlyWiki.prototype.getTiddlerText = function(title,defaultText)
{
if(!title)
return defaultText;
var pos = title.indexOf(config.textPrimitives.sectionSeparator);
var section = null;
if(pos != -1) {
section = title.substr(pos + config.textPrimitives.sectionSeparator.length);
title = title.substr(0,pos);
}
pos = title.indexOf(config.textPrimitives.sliceSeparator);
if(pos != -1) {
var slice = this.getTiddlerSlice(title.substr(0,pos),title.substr(pos + config.textPrimitives.sliceSeparator.length));
if(slice)
return slice;
}
var tiddler = this.fetchTiddler(title);
var text = tiddler ? tiddler.text : null;
if(!tiddler && this.isShadowTiddler(title)) {
text = this.getShadowTiddlerText(title);
}
if(text) {
if(!section)
return text;
var re = new RegExp("(^!{1,6}[ \t]*" + section.escapeRegExp() + "[ \t]*\n)","mg");
re.lastIndex = 0;
var match = re.exec(text);
if(match) {
var t = text.substr(match.index+match[1].length);
var re2 = /^!/mg;
re2.lastIndex = 0;
match = re2.exec(t); //# search for the next heading
if(match)
t = t.substr(0,match.index-1);//# don't include final \n
return t;
}
return defaultText;
}
if(defaultText != undefined)
return defaultText;
return null;
};
TiddlyWiki.prototype.getRecursiveTiddlerText = function(title,defaultText,depth)
{
var bracketRegExp = new RegExp("(?:\\[\\[([^\\]]+)\\]\\])","mg");
var text = this.getTiddlerText(title,null);
if(text == null)
return defaultText;
var textOut = [];
var match,lastPos = 0;
do {
match = bracketRegExp.exec(text);
if(match) {
textOut.push(text.substr(lastPos,match.index-lastPos));
if(match[1]) {
if(depth <= 0)
textOut.push(match[1]);
else
textOut.push(this.getRecursiveTiddlerText(match[1],"",depth-1));
}
lastPos = match.index + match[0].length;
} else {
textOut.push(text.substr(lastPos));
}
} while(match);
return textOut.join("");
};
//TiddlyWiki.prototype.slicesRE = /(?:^([\'\/]{0,2})~?([\.\w]+)\:\1[\t\x20]*([^\n]+)[\t\x20]*$)|(?:^\|([\'\/]{0,2})~?([\.\w]+)\:?\4\|[\t\x20]*([^\n]+)[\t\x20]*\|$)/gm;
TiddlyWiki.prototype.slicesRE = /(?:^([\'\/]{0,2})~?([\.\w]+)\:\1[\t\x20]*([^\n]*)[\t\x20]*$)|(?:^\|([\'\/]{0,2})~?([\.\w]+)\:?\4\|[\t\x20]*([^\|\n]*)[\t\x20]*\|$)/gm;
// @internal
TiddlyWiki.prototype.calcAllSlices = function(title)
{
var slices = {};
var text = this.getTiddlerText(title,"");
this.slicesRE.lastIndex = 0;
var m = this.slicesRE.exec(text);
while(m) {
if(m[2])
slices[m[2]] = m[3];
else
slices[m[5]] = m[6];
m = this.slicesRE.exec(text);
}
return slices;
};
// Returns the slice of text of the given name
//#
//# A text slice is a substring in the tiddler's text that is defined
//# either like this
//# aName: textSlice
//# or
//# |aName:| textSlice |
//# or
//# |aName| textSlice |
//#
//# In the text the name (or name:) may be decorated with '' or //
//# ie this would also a valid text slice:
//#
//# |''aName:''| textSlice |
//#
//# @param name should only contain "word characters" (i.e. "a-ZA-Z_0-9")
//# @return [may be undefined] the (trimmed) text of the specified slice.
TiddlyWiki.prototype.getTiddlerSlice = function(title,sliceName)
{
var slices = this.slices[title];
if(!slices) {
slices = this.calcAllSlices(title);
this.slices[title] = slices;
}
return slices[sliceName];
};
// Build an hashmap of the specified named slices of a tiddler
TiddlyWiki.prototype.getTiddlerSlices = function(title,sliceNames)
{
var t,r = {};
for(t=0; t<sliceNames.length; t++) {
var slice = this.getTiddlerSlice(title,sliceNames[t]);
if(slice)
r[sliceNames[t]] = slice;
}
return r;
};
TiddlyWiki.prototype.suspendNotifications = function()
{
this.notificationLevel--;
};
TiddlyWiki.prototype.resumeNotifications = function()
{
this.notificationLevel++;
};
// Invoke the notification handlers for a particular tiddler
TiddlyWiki.prototype.notify = function(title,doBlanket)
{
if(!this.notificationLevel) {
var t;
for(t=0; t<this.namedNotifications.length; t++) {
var n = this.namedNotifications[t];
if((n.name == null && doBlanket) || (n.name == title))
n.notify(title);
}
}
};
// Invoke the notification handlers for all tiddlers
TiddlyWiki.prototype.notifyAll = function()
{
if(!this.notificationLevel) {
var t;
for(t=0; t<this.namedNotifications.length; t++) {
var n = this.namedNotifications[t];
if(n.name)
n.notify(n.name);
}
}
};
// Add a notification handler to a tiddler
TiddlyWiki.prototype.addNotification = function(title,fn)
{
var i;
for(i=0; i<this.namedNotifications.length; i++) {
if((this.namedNotifications[i].name == title) && (this.namedNotifications[i].notify == fn))
return this;
}
this.namedNotifications.push({name: title, notify: fn});
return this;
};
TiddlyWiki.prototype.removeTiddler = function(title)
{
var tiddler = this.fetchTiddler(title);
if(tiddler) {
this.deleteTiddler(title);
this.notify(title,true);
this.setDirty(true);
}
};
// Reset the sync status of a freshly synced tiddler
TiddlyWiki.prototype.resetTiddler = function(title)
{
var tiddler = this.fetchTiddler(title);
if(tiddler) {
tiddler.clearChangeCount();
this.notify(title,true);
this.setDirty(true);
}
};
TiddlyWiki.prototype.setTiddlerTag = function(title,status,tag)
{
var tiddler = this.fetchTiddler(title);
if(tiddler) {
var t = tiddler.tags.indexOf(tag);
if(t != -1)
tiddler.tags.splice(t,1);
if(status)
tiddler.tags.push(tag);
tiddler.changed();
tiddler.incChangeCount();
this.notify(title,true);
this.setDirty(true);
}
};
TiddlyWiki.prototype.addTiddlerFields = function(title,fields)
{
var tiddler = this.fetchTiddler(title);
if(!tiddler)
return;
merge(tiddler.fields,fields);
tiddler.changed();
tiddler.incChangeCount();
this.notify(title,true);
this.setDirty(true);
};
// Store tiddler in TiddlyWiki instance
//#
//# optionally accepts a Tiddler instance as first argument, rendering
//# subsequent arguments obsolete
//#
//# existing tiddlers can be renamed using the newTitle argument
//#
//# created and modified arguments are Date objects,
//# tags argument is an array of strings
//#
//# fields should retain existing tiddler's extended fields and use
//# config.defaultCustomFields as fallback
//#
//# NB: Does not trigger autoSaveChanges.
TiddlyWiki.prototype.saveTiddler = function(title,newTitle,newBody,modifier,modified,tags,fields,clearChangeCount,created,creator)
{
var tiddler;
if(title instanceof Tiddler) {
tiddler = title;
title = tiddler.title;
newTitle = title;
} else {
tiddler = this.fetchTiddler(title);
if(tiddler) {
created = created || tiddler.created; // Preserve created date
creator = creator || tiddler.creator;
this.deleteTiddler(title);
} else {
created = created || modified;
tiddler = new Tiddler();
}
fields = merge(merge({},fields),config.defaultCustomFields,true);
tiddler.set(newTitle,newBody,modifier,modified,tags,created,fields,creator);
}
this.addTiddler(tiddler);
if(clearChangeCount)
tiddler.clearChangeCount();
else
tiddler.incChangeCount();
if(title != newTitle)
this.notify(title,true);
this.notify(newTitle,true);
if(window.location.protocol == "file:")
this.setDirty(true);
return tiddler;
};
TiddlyWiki.prototype.incChangeCount = function(title)
{
var tiddler = this.fetchTiddler(title);
if(tiddler)
tiddler.incChangeCount();
};
TiddlyWiki.prototype.getLoader = function()
{
if(!this.loader)
this.loader = new TW21Loader();
return this.loader;
};
TiddlyWiki.prototype.getSaver = function()
{
if(!this.saver)
this.saver = new TW21Saver();
return this.saver;
};
// Return all tiddlers formatted as an HTML string
TiddlyWiki.prototype.allTiddlersAsHtml = function()
{
return this.getSaver().externalize(store);
};
// Load contents of a TiddlyWiki from an HTML DIV
TiddlyWiki.prototype.loadFromDiv = function(src,idPrefix,noUpdate)
{
this.idPrefix = idPrefix;
var storeElem = (typeof src == "string") ? document.getElementById(src) : src;
if(!storeElem)
return;
var tiddlers = this.getLoader().loadTiddlers(this,storeElem.childNodes);
this.setDirty(false);
if(!noUpdate) {
var i;
for(i = 0;i<tiddlers.length; i++)
tiddlers[i].changed();
}
jQuery(document).trigger("loadTiddlers");
};
// Load contents of a TiddlyWiki from a string
// Returns null if there's an error
TiddlyWiki.prototype.importTiddlyWiki = function(text)
{
var posDiv = locateStoreArea(text);
if(!posDiv)
return null;
var content = "<" + "html><" + "body>" + text.substring(posDiv[0],posDiv[1] + endSaveArea.length) + "<" + "/body><" + "/html>";
// Create the iframe
var iframe = document.createElement("iframe");
iframe.style.display = "none";
document.body.appendChild(iframe);
var doc = iframe.document;
if(iframe.contentDocument)
doc = iframe.contentDocument; // For NS6
else if(iframe.contentWindow)
doc = iframe.contentWindow.document; // For IE5.5 and IE6
// Put the content in the iframe
doc.open();
doc.writeln(content);
doc.close();
// Load the content into a TiddlyWiki() object
var storeArea = doc.getElementById("storeArea");
this.loadFromDiv(storeArea,"store");
// Get rid of the iframe
iframe.parentNode.removeChild(iframe);
return this;
};
TiddlyWiki.prototype.updateTiddlers = function()
{
this.tiddlersUpdated = true;
this.forEachTiddler(function(title,tiddler) {
tiddler.changed();
});
};
// Return an array of tiddlers matching a search regular expression
TiddlyWiki.prototype.search = function(searchRegExp,sortField,excludeTag,match)
{
var candidates = this.reverseLookup("tags",excludeTag,!!match);
var t,results = [];
for(t=0; t<candidates.length; t++) {
if((candidates[t].title.search(searchRegExp) != -1) || (candidates[t].text.search(searchRegExp) != -1))
results.push(candidates[t]);
}
if(!sortField)
sortField = "title";
results.sort(function(a,b) {return a[sortField] < b[sortField] ? -1 : (a[sortField] == b[sortField] ? 0 : +1);});
return results;
};
// Returns a list of all tags in use
// excludeTag - if present, excludes tags that are themselves tagged with excludeTag
// Returns an array of arrays where [tag][0] is the name of the tag and [tag][1] is the number of occurances
TiddlyWiki.prototype.getTags = function(excludeTag)
{
var results = [];
this.forEachTiddler(function(title,tiddler) {
var g,c;
for(g=0; g<tiddler.tags.length; g++) {
var tag = tiddler.tags[g];
var n = true;
for(c=0; c<results.length; c++) {
if(results[c][0] == tag) {
n = false;
results[c][1]++;
}
}
if(n && excludeTag) {
var t = this.fetchTiddler(tag);
if(t && t.isTagged(excludeTag))
n = false;
}
if(n)
results.push([tag,1]);
}
});
results.sort(function(a,b) {return a[0].toLowerCase() < b[0].toLowerCase() ? -1 : (a[0].toLowerCase() == b[0].toLowerCase() ? 0 : +1);});
return results;
};
// Return an array of the tiddlers that are tagged with a given tag
TiddlyWiki.prototype.getTaggedTiddlers = function(tag,sortField)
{
return this.reverseLookup("tags",tag,true,sortField);
};
TiddlyWiki.prototype.getValueTiddlers = function(field,value,sortField)
{
return this.reverseLookup(field,value,true,sortField);
};
// Return an array of the tiddlers that link to a given tiddler
TiddlyWiki.prototype.getReferringTiddlers = function(title,unusedParameter,sortField)
{
if(!this.tiddlersUpdated)
this.updateTiddlers();
return this.reverseLookup("links",title,true,sortField);
};
// Return an array of the tiddlers that do or do not have a specified entry in the specified storage array (ie, "links" or "tags")
// lookupMatch == true to match tiddlers, false to exclude tiddlers
TiddlyWiki.prototype.reverseLookup = function(lookupField,lookupValue,lookupMatch,sortField)
{
var results = [];
this.forEachTiddler(function(title,tiddler) {
var f = !lookupMatch;
var values;
if(["links", "tags"].contains(lookupField)) {
values = tiddler[lookupField];
} else {
var accessor = TiddlyWiki.standardFieldAccess[lookupField];
if(accessor) {
values = [ accessor.get(tiddler) ];
} else {
values = tiddler.fields[lookupField] ? [tiddler.fields[lookupField]] : [];
}
}
var lookup;
for(lookup=0; lookup<values.length; lookup++) {
if(values[lookup] == lookupValue)
f = lookupMatch;
}
if(f)
results.push(tiddler);
});
if(!sortField)
sortField = "title";
return this.sortTiddlers(results,sortField);
};
// Return the tiddlers as a sorted array
TiddlyWiki.prototype.getTiddlers = function(field,excludeTag)
{
var results = [];
this.forEachTiddler(function(title,tiddler) {
if(excludeTag == undefined || !tiddler.isTagged(excludeTag))
results.push(tiddler);
});
if(field)
results.sort(function(a,b) {return a[field] < b[field] ? -1 : (a[field] == b[field] ? 0 : +1);});
return results;
};
// Return array of names of tiddlers that are referred to but not defined
TiddlyWiki.prototype.getMissingLinks = function()
{
if(!this.tiddlersUpdated)
this.updateTiddlers();
var results = [];
this.forEachTiddler(function (title,tiddler) {
if(tiddler.isTagged("excludeMissing") || tiddler.isTagged("systemConfig"))
return;
var n;
for(n=0; n<tiddler.links.length;n++) {
var link = tiddler.links[n];
if(this.getTiddlerText(link,null) == null && !this.isShadowTiddler(link) && !config.macros[link])
results.pushUnique(link);
}
});
results.sort();
return results;
};
// Return an array of names of tiddlers that are defined but not referred to
TiddlyWiki.prototype.getOrphans = function()
{
var results = [];
this.forEachTiddler(function (title,tiddler) {
if(this.getReferringTiddlers(title).length == 0 && !tiddler.isTagged("excludeLists"))
results.push(title);
});
results.sort();
return results;
};
// Return an array of names of all the shadow tiddlers
TiddlyWiki.prototype.getShadowed = function()
{
var t,results = [];
for(t in config.shadowTiddlers) {
if(this.isShadowTiddler(t))
results.push(t);
}
results.sort();
return results;
};
// Return an array of tiddlers that have been touched since they were downloaded or created
TiddlyWiki.prototype.getTouched = function()
{
var results = [];
this.forEachTiddler(function(title,tiddler) {
if(tiddler.isTouched())
results.push(tiddler);
});
results.sort();
return results;
};
// Resolves a Tiddler reference or tiddler title into a Tiddler object, or null if it doesn't exist
TiddlyWiki.prototype.resolveTiddler = function(tiddler)
{
var t = (typeof tiddler == "string") ? this.getTiddler(tiddler) : tiddler;
return t instanceof Tiddler ? t : null;
};
// Sort a list of tiddlers
//# tiddlers - array of Tiddler() objects to be sorted
//# field - name of field (or extended field) to sort by;
//# precede with "+" for ascending sort (the default)
//# or "-" for descending sort
TiddlyWiki.prototype.sortTiddlers = function(tiddlers,field)
{
var asc = +1;
switch(field.substr(0,1)) {
case "-":
asc = -1;
field = field.substr(1);
break;
case "+":
field = field.substr(1);
break;
}
if(TiddlyWiki.standardFieldAccess[field]) {
if(field=="title") {
tiddlers.sort(function(a,b) {return a[field].toLowerCase() < b[field].toLowerCase() ? -asc : (a[field].toLowerCase() == b[field].toLowerCase() ? 0 : asc);});
} else {
tiddlers.sort(function(a,b) {return a[field] < b[field] ? -asc : (a[field] == b[field] ? 0 : asc);});
}
} else {
tiddlers.sort(function(a,b) {return a.fields[field] < b.fields[field] ? -asc : (a.fields[field] == b.fields[field] ? 0 : +asc);});
}
return tiddlers;
};