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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const EXPORTED_SYMBOLS = ["TagNoun"];
const { MailServices } = ChromeUtils.import(
"resource:///modules/MailServices.jsm"
);
const { Gloda } = ChromeUtils.import("resource:///modules/gloda/Gloda.jsm");
const { GlodaConstants } = ChromeUtils.import(
"resource:///modules/gloda/GlodaConstants.jsm"
);
/**
* @namespace Tag noun provider.
*/
var TagNoun = {
name: "tag",
clazz: Ci.nsIMsgTag,
usesParameter: true,
allowsArbitraryAttrs: false,
idAttr: "key",
_msgTagService: null,
_tagMap: null,
_tagList: null,
_init() {
// This reference can be substituted for testing purposes.
this._msgTagService = MailServices.tags;
this._updateTagMap();
},
getAllTags() {
if (this._tagList == null) {
this._updateTagMap();
}
return this._tagList;
},
_updateTagMap() {
this._tagMap = {};
let tagArray = (this._tagList = this._msgTagService.getAllTags());
for (let iTag = 0; iTag < tagArray.length; iTag++) {
let tag = tagArray[iTag];
this._tagMap[tag.key] = tag;
}
},
comparator(a, b) {
if (a == null) {
if (b == null) {
return 0;
}
return 1;
} else if (b == null) {
return -1;
}
return a.tag.localeCompare(b.tag);
},
userVisibleString(aTag) {
return aTag.tag;
},
// we cannot be an attribute value
toParamAndValue(aTag) {
return [aTag.key, null];
},
toJSON(aTag) {
return aTag.key;
},
fromJSON(aTagKey, aIgnored) {
let tag = this._tagMap.hasOwnProperty(aTagKey)
? this._tagMap[aTagKey]
: undefined;
// you will note that if a tag is removed, we are unable to aggressively
// deal with this. we are okay with this, but it would be nice to be able
// to listen to the message tag service to know when we should rebuild.
if (tag === undefined && this._msgTagService.isValidKey(aTagKey)) {
this._updateTagMap();
tag = this._tagMap[aTagKey];
}
// we intentionally are returning undefined if the tag doesn't exist
return tag;
},
/**
* Convenience helper to turn a tag key into a tag name.
*/
getTag(aTagKey) {
return this.fromJSON(aTagKey);
},
};
TagNoun._init();
Gloda.defineNoun(TagNoun, GlodaConstants.NOUN_TAG);
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