gnome-shell/js/ui/search.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Lang = imports.lang;
const Signals = imports.signals;
const SEARCH_PROVIDERS_SCHEMA = 'org.gnome.desktop.search-providers';
const SearchSystem = new Lang.Class({
Name: 'SearchSystem',
_init: function() {
this._providers = [];
this._remoteProviders = [];
this.reset();
},
registerProvider: function (provider) {
provider.searchSystem = this;
this._providers.push(provider);
if (provider.isRemoteProvider)
this._remoteProviders.push(provider);
},
unregisterProvider: function (provider) {
let index = this._providers.indexOf(provider);
if (index == -1)
return;
provider.searchSystem = null;
this._providers.splice(index, 1);
let remoteIndex = this._remoteProviders.indexOf(provider);
if (remoteIndex != -1)
this._remoteProviders.splice(index, 1);
},
getProviders: function() {
return this._providers;
},
getRemoteProviders: function() {
return this._remoteProviders;
},
getTerms: function() {
return this._previousTerms;
},
reset: function() {
this._previousTerms = [];
this._previousResults = [];
},
pushResults: function(provider, results) {
let i = this._providers.indexOf(provider);
if (i == -1)
return;
this._previousResults[i] = [provider, results];
this.emit('search-updated', this._previousResults[i]);
},
updateSearch: function(searchString) {
searchString = searchString.replace(/^\s+/g, '').replace(/\s+$/g, '');
if (searchString == '')
return;
let terms = searchString.split(/\s+/);
this.updateSearchResults(terms);
},
updateSearchResults: function(terms) {
if (!terms)
return;
let isSubSearch = terms.length == this._previousTerms.length;
if (isSubSearch) {
for (let i = 0; i < terms.length; i++) {
if (terms[i].indexOf(this._previousTerms[i]) != 0) {
isSubSearch = false;
break;
}
}
}
let previousResultsArr = this._previousResults;
let results = [];
this._previousTerms = terms;
this._previousResults = results;
if (isSubSearch) {
for (let i = 0; i < this._providers.length; i++) {
let [provider, previousResults] = previousResultsArr[i];
try {
results.push([provider, []]);
provider.getSubsearchResultSet(previousResults, terms);
} catch (error) {
log('A ' + error.name + ' has occured in ' + provider.id + ': ' + error.message);
}
}
} else {
for (let i = 0; i < this._providers.length; i++) {
let provider = this._providers[i];
try {
results.push([provider, []]);
provider.getInitialResultSet(terms);
} catch (error) {
log('A ' + error.name + ' has occured in ' + provider.id + ': ' + error.message);
}
}
}
},
});
Signals.addSignalMethods(SearchSystem.prototype);