-
Notifications
You must be signed in to change notification settings - Fork 1.2k
/
transclude.js
executable file
·418 lines (396 loc) · 12.5 KB
/
transclude.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
/*\
title: $:/core/modules/widgets/transclude.js
type: application/javascript
module-type: widget
Transclude widget
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var TranscludeWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
};
/*
Inherit from the base widget class
*/
TranscludeWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
TranscludeWidget.prototype.render = function(parent,nextSibling) {
this.parentDomNode = parent;
this.computeAttributes();
this.execute();
this.renderChildren(parent,nextSibling);
};
/*
Compute the internal state of the widget
*/
TranscludeWidget.prototype.execute = function() {
// Get our attributes, string parameters, and slot values into properties of the widget object
this.collectAttributes();
this.collectStringParameters();
this.collectSlotFillParameters();
// Get the parse tree nodes that we are transcluding
var target = this.getTransclusionTarget(),
parseTreeNodes = target.parseTreeNodes;
this.sourceText = target.text;
this.parserType = target.type;
this.parseAsInline = target.parseAsInline;
// Process the transclusion according to the output type
switch(this.transcludeOutput || "text/html") {
case "text/html":
// No further processing required
break;
case "text/raw":
// Just return the raw text
parseTreeNodes = [{type: "text", text: this.sourceText}];
break;
default:
// text/plain
var plainText = this.wiki.renderText("text/plain",this.parserType,this.sourceText,{parentWidget: this});
parseTreeNodes = [{type: "text", text: plainText}];
break;
}
// Set the legacy transclusion context variables only if we're not transcluding a variable
if(!this.transcludeVariable) {
var recursionMarker = this.makeRecursionMarker();
this.setVariable("transclusion",recursionMarker);
}
// Construct the child widgets
this.makeChildWidgets(parseTreeNodes);
};
/*
Collect the attributes we need, in the process determining whether we're being used in legacy mode
*/
TranscludeWidget.prototype.collectAttributes = function() {
var self = this;
// Detect legacy mode
this.legacyMode = true;
$tw.utils.each(this.attributes,function(value,name) {
if(name.charAt(0) === "$") {
self.legacyMode = false;
}
});
// Get the attributes for the appropriate mode
if(this.legacyMode) {
this.transcludeTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
this.transcludeSubTiddler = this.getAttribute("subtiddler");
this.transcludeField = this.getAttribute("field");
this.transcludeIndex = this.getAttribute("index");
this.transcludeMode = this.getAttribute("mode");
this.recursionMarker = this.getAttribute("recursionMarker","yes");
} else {
this.transcludeVariable = this.getAttribute("$variable");
this.transcludeType = this.getAttribute("$type");
this.transcludeOutput = this.getAttribute("$output","text/html");
this.transcludeTitle = this.getAttribute("$tiddler",this.getVariable("currentTiddler"));
this.transcludeSubTiddler = this.getAttribute("$subtiddler");
this.transcludeField = this.getAttribute("$field");
this.transcludeIndex = this.getAttribute("$index");
this.transcludeMode = this.getAttribute("$mode");
this.recursionMarker = this.getAttribute("$recursionMarker","yes");
}
};
/*
Collect string parameters
*/
TranscludeWidget.prototype.collectStringParameters = function() {
var self = this;
this.stringParametersByName = Object.create(null);
if(!this.legacyMode) {
$tw.utils.each(this.attributes,function(value,name) {
if(name.charAt(0) === "$") {
if(name.charAt(1) === "$") {
// Attributes starting $$ represent parameters starting with a single $
name = name.slice(1);
} else {
// Attributes starting with a single $ are reserved for the widget
return;
}
}
self.stringParametersByName[name] = value;
});
}
};
/*
Collect slot value parameters
*/
TranscludeWidget.prototype.collectSlotFillParameters = function() {
var self = this;
this.slotFillParseTrees = Object.create(null);
if(this.legacyMode) {
this.slotFillParseTrees["ts-missing"] = this.parseTreeNode.children;
} else {
this.slotFillParseTrees["ts-raw"] = this.parseTreeNode.children;
var noFillWidgetsFound = true,
searchParseTreeNodes = function(nodes) {
$tw.utils.each(nodes,function(node) {
if(node.type === "fill") {
if(node.attributes["$name"] && node.attributes["$name"].type === "string") {
var slotValueName = node.attributes["$name"].value;
self.slotFillParseTrees[slotValueName] = node.children || [];
}
noFillWidgetsFound = false;
} else {
searchParseTreeNodes(node.children);
}
});
};
searchParseTreeNodes(this.parseTreeNode.children);
if(noFillWidgetsFound) {
this.slotFillParseTrees["ts-missing"] = this.parseTreeNode.children;
}
}
};
/*
Get transcluded parse tree nodes as an object {parser:,text:,type:}
*/
TranscludeWidget.prototype.getTransclusionTarget = function() {
var self = this;
// Determine whether we're being used in inline or block mode
var parseAsInline = !this.parseTreeNode.isBlock;
if(this.transcludeMode === "inline") {
parseAsInline = true;
} else if(this.transcludeMode === "block") {
parseAsInline = false;
}
var parser;
// Get the parse tree
if(this.hasAttribute("$variable")) {
if(this.transcludeVariable) {
// Transcluding a variable
var variableInfo = this.getVariableInfo(this.transcludeVariable,{params: this.getOrderedTransclusionParameters()}),
srcVariable = variableInfo && variableInfo.srcVariable;
if(variableInfo.text) {
if(srcVariable && srcVariable.isFunctionDefinition) {
var result = (variableInfo.resultList ? variableInfo.resultList[0] : variableInfo.text) || "";
parser = {
tree: [{
type: "text",
text: result
}],
source: result,
type: "text/vnd.tiddlywiki"
};
if(parseAsInline) {
parser.tree[0] = {
type: "text",
text: result
};
} else {
parser.tree[0] = {
type: "element",
tag: "p",
children: [{
type: "text",
text: result
}]
}
}
} else {
var cacheKey = (parseAsInline ? "inlineParser" : "blockParser") + (this.transcludeType || "");
if(variableInfo.isCacheable && srcVariable[cacheKey]) {
parser = srcVariable[cacheKey];
} else {
parser = this.wiki.parseText(this.transcludeType,variableInfo.text || "",{parseAsInline: parseAsInline, configTrimWhiteSpace: srcVariable && srcVariable.configTrimWhiteSpace});
if(variableInfo.isCacheable) {
srcVariable[cacheKey] = parser;
}
}
}
if(parser) {
// Add parameters widget for procedures and custom widgets
if(srcVariable && (srcVariable.isProcedureDefinition || srcVariable.isWidgetDefinition)) {
parser = {
tree: [
{
type: "parameters",
children: parser.tree
}
],
source: parser.source,
type: parser.type
}
$tw.utils.each(srcVariable.params,function(param) {
var name = param.name;
// Parameter names starting with dollar must be escaped to double dollars
if(name.charAt(0) === "$") {
name = "$" + name;
}
$tw.utils.addAttributeToParseTreeNode(parser.tree[0],name,param["default"])
});
} else if(srcVariable && (srcVariable.isMacroDefinition || !srcVariable.isFunctionDefinition)) {
// For macros and ordinary variables, wrap the parse tree in a vars widget assigning the parameters to variables named "__paramname__"
parser = {
tree: [
{
type: "vars",
children: parser.tree
}
],
source: parser.source,
type: parser.type
}
$tw.utils.each(variableInfo.params,function(param) {
$tw.utils.addAttributeToParseTreeNode(parser.tree[0],"__" + param.name + "__",param.value)
});
}
}
}
}
} else {
// Transcluding a text reference
parser = this.wiki.parseTextReference(
this.transcludeTitle,
this.transcludeField,
this.transcludeIndex,
{
parseAsInline: parseAsInline,
subTiddler: this.transcludeSubTiddler,
defaultType: this.transcludeType
});
}
// Set 'thisTiddler'
this.setVariable("thisTiddler",this.transcludeTitle);
// Return the parse tree
if(parser) {
return {
parser: parser,
parseTreeNodes: parser.tree,
parseAsInline: parseAsInline,
text: parser.source,
type: parser.type
};
} else {
// If there's no parse tree then return the missing slot value
return {
parser: null,
parseTreeNodes: (this.slotFillParseTrees["ts-missing"] || []),
parseAsInline: parseAsInline,
text: null,
type: null
};
}
};
/*
Fetch all the string parameters as an ordered array of {name:, value:} where the name is optional
*/
TranscludeWidget.prototype.getOrderedTransclusionParameters = function() {
var result = [];
// Collect the parameters
for(var name in this.stringParametersByName) {
var value = this.stringParametersByName[name];
result.push({name: name, value: value});
}
// Sort numerical parameter names first
result.sort(function(a,b) {
var aIsNumeric = !isNaN(a.name),
bIsNumeric = !isNaN(b.name);
if(aIsNumeric && bIsNumeric) {
return a.name - b.name;
} else if(aIsNumeric) {
return -1;
} else if(bIsNumeric) {
return 1;
} else {
return a.name === b.name ? 0 : (a.name < b.name ? -1 : 1);
}
});
// Remove names from numerical parameters
$tw.utils.each(result,function(param,index) {
if(!isNaN(param.name)) {
delete param.name;
}
});
return result;
};
/*
Fetch the value of a parameter
*/
TranscludeWidget.prototype.getTransclusionParameter = function(name,index,defaultValue) {
if(name in this.stringParametersByName) {
return this.stringParametersByName[name];
} else {
var name = "" + index;
if(name in this.stringParametersByName) {
return this.stringParametersByName[name];
}
}
return defaultValue;
};
/*
Get one of the special parameters to be provided by the parameters widget
*/
TranscludeWidget.prototype.getTransclusionMetaParameters = function() {
var self = this;
return {
"parseMode": function() {
return self.parseAsInline ? "inline" : "block";
},
"parseTreeNodes": function() {
return JSON.stringify(self.parseTreeNode.children || []);
},
"slotFillParseTreeNodes": function() {
return JSON.stringify(self.slotFillParseTrees);
},
"params": function() {
return JSON.stringify(self.stringParametersByName);
}
};
};
/*
Fetch the value of a slot
*/
TranscludeWidget.prototype.getTransclusionSlotFill = function(name,defaultParseTreeNodes) {
if(name && this.slotFillParseTrees[name] && this.slotFillParseTrees[name].length > 0) {
return this.slotFillParseTrees[name];
} else {
return defaultParseTreeNodes || [];
}
};
/*
Return whether this transclusion should be visible to the slot widget
*/
TranscludeWidget.prototype.hasVisibleSlots = function() {
return this.getAttribute("$fillignore","no") === "no";
}
/*
Compose a string comprising the title, field and/or index to identify this transclusion for recursion detection
*/
TranscludeWidget.prototype.makeRecursionMarker = function() {
var output = [];
output.push("{");
output.push(this.getVariable("currentTiddler",{defaultValue: ""}));
output.push("|");
output.push(this.transcludeTitle || "");
output.push("|");
output.push(this.transcludeField || "");
output.push("|");
output.push(this.transcludeIndex || "");
output.push("|");
output.push(this.transcludeSubTiddler || "");
output.push("}");
return output.join("");
};
TranscludeWidget.prototype.parserNeedsRefresh = function() {
// Doesn't need to consider transcluded variables because a parent variable can't change once a widget has been created
var parserInfo = this.wiki.getTextReferenceParserInfo(this.transcludeTitle,this.transcludeField,this.transcludeIndex,{subTiddler:this.transcludeSubTiddler});
return (this.sourceText === undefined || parserInfo.sourceText !== this.sourceText || parserInfo.parserType !== this.parserType)
};
/*
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
*/
TranscludeWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(($tw.utils.count(changedAttributes) > 0) || (!this.transcludeVariable && changedTiddlers[this.transcludeTitle] && this.parserNeedsRefresh())) {
this.refreshSelf();
return true;
} else {
return this.refreshChildren(changedTiddlers);
}
};
exports.transclude = TranscludeWidget;
})();