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Code Issues Releases Wiki Activity

Added list filter operator

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This commit is contained in:
Jeremy Ruston 2012-10-16 11:25:14 +01:00
parent de2cd34801
commit 03623587e1
2 changed files with 28 additions and 11 deletions
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37
core/modules/filters.js
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@ -76,7 +76,7 @@ exports.filterFragments = {
};
exports.operators = {
"title": {
"title": { // Filter by title
selector: function(operator) {
return "$tw.utils.pushTop(subResults,\"" + $tw.utils.stringify(operator.operand) + "\");";
},
@ -84,7 +84,7 @@ exports.operators = {
return "if(subResults.indexOf(\"" + $tw.utils.stringify(operator.operand) + "\") !== -1) {subResults = [\"" + $tw.utils.stringify(operator.operand) + "\"];} else {subResults = [];}";
}
},
"prefix": {
"prefix": { // Filter by title prefix
selector: function(operator) {
var op = operator.prefix === "!" ? "!" : "=";
return "for(title in source) {if(title.substr(0," + operator.operand.length + ")" + op + "==\"" + $tw.utils.stringify(operator.operand) + "\") {$tw.utils.pushTop(subResults,title);}}";
@ -94,7 +94,7 @@ exports.operators = {
return "for(r=subResults.length-1; r>=0; r--) {if(title.substr(0," + operator.operand.length + ")" + op + "==\"" + $tw.utils.stringify(operator.operand) + "\") {subResults.splice(r,1);}}";
}
},
"is": {
"is": { // Filter by status
selector: function(operator) {
var op = operator.prefix === "!" ? "!" : "";
switch(operator.operand) {
@ -128,7 +128,7 @@ exports.operators = {
}
}
},
"tag": {
"tag": { // Filter by tag
selector: function(operator) {
var op = operator.prefix === "!" ? "!" : "";
return "for(title in source) {if(" + op + "this.getTiddler(title).hasTag(\"" + $tw.utils.stringify(operator.operand) + "\")) {$tw.utils.pushTop(subResults,title);}}";
@ -138,7 +138,7 @@ exports.operators = {
return "for(r=subResults.length-1; r>=0; r--) {if(" + op + "this.getTiddler(subResults[r]).hasTag(\"" + $tw.utils.stringify(operator.operand) + "\")) {subResults.splice(r,1);}}";
}
},
"tags": {
"tags": { // Return all tags used on selected tiddlers
selector: function(operator) {
return "for(title in source) {r = this.getTiddler(title); if(r && r.fields.tags) {$tw.utils.pushTop(subResults,r.fields.tags);}}";
},
@ -146,7 +146,7 @@ exports.operators = {
return "subResultsTemp = subResults;\nsubResults = [];for(t=subResultsTemp.length-1; t>=0; t--) {r = this.getTiddler(subResultsTemp[t]); if(r && r.fields.tags) {$tw.utils.pushTop(subResults,r.fields.tags);}}";
}
},
"tagging": {
"tagging": { // Return all tiddlers tagged with any of the selected tags
selector: function(operator) {
return "for(title in source) {$tw.utils.pushTop(subResults,this.getTiddlersWithTag(title));}";
},
@ -154,7 +154,7 @@ exports.operators = {
return "subResultsTemp = subResults;\nsubResults = [];for(t=subResultsTemp.length-1; t>=0; t--) {$tw.utils.pushTop(subResults,this.getTiddlersWithTag(subResultsTemp[t]));}";
}
},
"has": {
"has": { // Filter by presence of a particular field
selector: function(operator) {
var op = operator.prefix === "!" ? "=" : "!";
return "for(title in source) {if(this.getTiddler(title).fields[\"" + $tw.utils.stringify(operator.operand) + "\"] " + op + "== undefined) {$tw.utils.pushTop(subResults,title);}}";
@ -164,7 +164,7 @@ exports.operators = {
return "for(r=subResults.length-1; r>=0; r--) {if(this.getTiddler(subResults[r]).fields[\"" + $tw.utils.stringify(operator.operand) + "\"] " + op + "== undefined) {subResults.splice(r,1);}}";
}
},
"sort": {
"sort": { // Sort selected tiddlers
selector: function(operator) {
throw "Cannot use sort operator at the start of a filter operation";
},
@ -172,7 +172,7 @@ exports.operators = {
var desc = operator.prefix === "!" ? "true" : "false";
return "this.sortTiddlers(subResults,\"" + $tw.utils.stringify(operator.operand) + "\"," + desc + ");";
}
},
}, // Case insensitive sort of selected tiddlers
"sort-case-sensitive": {
selector: function(operator) {
throw "Cannot use sort operator at the start of a filter operation";
@ -182,7 +182,7 @@ exports.operators = {
return "this.sortTiddlers(subResults,\"" + $tw.utils.stringify(operator.operand) + "\"," + desc + ",true);";
}
},
"limit": {
"limit": { // Limit number of members of selection
selector: function(operator) {
throw "Cannot use limit operator at the start of a filter operation";
},
@ -192,7 +192,22 @@ exports.operators = {
return "if(subResults.length > " + limit + ") {subResults.splice(" + base + ",subResults.length-" + limit + ");}";
}
},
"field": {
"list": { // Select all tiddlers that are listed (or not listed) in the specified tiddler
selector: function(operator) {
if(operator.prefix === "!") {
return "var list = this.getTiddler(\"" + $tw.utils.stringify(operator.operand) + "\").fields.text.split(\"\\n\");" +
"for(title in source) {if(list.indexOf(title) === -1) {$tw.utils.pushTop(subResults,title);}}";
} else {
return "$tw.utils.pushTop(subResults,this.getTiddler(\"" + $tw.utils.stringify(operator.operand) + "\").fields.text.split(\"\\n\"));";
}
},
filter: function(operator) {
var op = operator.prefix === "!" ? "!==" : "===";
return "var list = this.getTiddler(\"" + $tw.utils.stringify(operator.operand) + "\").fields.text.split(\"\\n\");" +
"for(r=subResults.length-1; r>=0; r--) {if(list.indexOf(title) " + op + " -1) {subResults.splice(r,1);}}";
}
},
"field": { // Special handler for field comparisons
selector: function(operator) {
var op = operator.prefix === "!" ? "!" : "=";
return "for(title in source) {if(this.getTiddler(title).fields[\"" + $tw.utils.stringify(operator.operator) + "\"] " + op + "== \"" + operator.operand + "\") {$tw.utils.pushTop(subResults,title);}}";

2
tw5.com/tiddlers/concepts/TiddlerFilters.tid
View File

@ -22,6 +22,7 @@ The mechanism is easiest to understand by first presenting some example filter s
|`[tag[tom]] [tag[harry]] -[[one][two][three]]` |All tiddlers tagged either `tom` or `harry`, but excluding `one`, `two` and `three` |
|`[[MyTiddler]tags[]]` |All tiddlers being used as tags on the tiddler `MyTiddler` |
|`[[MyTiddler]tagging[]]` |All tiddlers being tagged with `MyTiddler` |
|`[list[MyList]]` |All tiddlers listed in `MyList` |
}}}
! Operators
@ -39,6 +40,7 @@ A filter string consists of one or more runs of filter operators that each look
* ''{field}'': tests whether a tiddler field has a specified value (`[modifier[Jeremy]]`) or not (`[!modifier[Jeremy]]`)
* ''tags'': selects the tags on the currently selected tiddlers
* ''tagging'': selects the tiddlers tagged with the currently selected tiddlers
* ''list'': selects the tiddlers listed in a specified tiddler (newline delimited)
An operator can be negated with by preceding it with `!`, for example `[!tag[Tommy]]` selects the tiddlers that are not tagged with `Tommy`.