gnome-shell/js/ui/search.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Meta = imports.gi.Meta;
const Signals = imports.signals;
const St = imports.gi.St;
const Atk = imports.gi.Atk;
const AppDisplay = imports.ui.appDisplay;
const DND = imports.ui.dnd;
const IconGrid = imports.ui.iconGrid;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const RemoteSearch = imports.ui.remoteSearch;
const Separator = imports.ui.separator;
const Util = imports.misc.util;
const SEARCH_PROVIDERS_SCHEMA = 'org.gnome.desktop.search-providers';
const MAX_LIST_SEARCH_RESULTS_ROWS = 3;
const MAX_GRID_SEARCH_RESULTS_ROWS = 1;
const SearchSystem = new Lang.Class({
Name: 'SearchSystem',
_init: function() {
this._providers = [];
this._registerProvider(new AppDisplay.AppSearchProvider());
this._searchSettings = new Gio.Settings({ schema_id: SEARCH_PROVIDERS_SCHEMA });
this._searchSettings.connect('changed::disabled', Lang.bind(this, this._reloadRemoteProviders));
this._searchSettings.connect('changed::disable-external', Lang.bind(this, this._reloadRemoteProviders));
this._searchSettings.connect('changed::sort-order', Lang.bind(this, this._reloadRemoteProviders));
this._reloadRemoteProviders();
this._cancellable = new Gio.Cancellable();
},
addProvider: function(provider) {
this._providers.push(provider);
this.emit('providers-changed');
},
_reloadRemoteProviders: function() {
let remoteProviders = this._providers.filter(function(provider) {
return provider.isRemoteProvider;
});
remoteProviders.forEach(Lang.bind(this, function(provider) {
this._unregisterProvider(provider);
}));
RemoteSearch.loadRemoteSearchProviders(Lang.bind(this, function(providers) {
providers.forEach(Lang.bind(this, this._registerProvider));
}));
this.emit('providers-changed');
},
_registerProvider: function (provider) {
this._providers.push(provider);
},
_unregisterProvider: function (provider) {
let index = this._providers.indexOf(provider);
this._providers.splice(index, 1);
if (provider.display)
provider.display.destroy();
},
getProviders: function() {
return this._providers;
},
getTerms: function() {
return this._terms;
},
reset: function() {
this._terms = [];
this._results = {};
},
_gotResults: function(results, provider) {
this._results[provider.id] = results;
this.emit('search-updated', provider, results);
},
setTerms: function(terms) {
this._cancellable.cancel();
this._cancellable.reset();
let previousResults = this._results;
let previousTerms = this._terms;
this.reset();
if (!terms)
return;
let searchString = terms.join(' ');
let previousSearchString = previousTerms.join(' ');
if (searchString == previousSearchString)
return;
let isSubSearch = false;
if (previousTerms.length > 0)
isSubSearch = searchString.indexOf(previousSearchString) == 0;
this._terms = terms;
this._providers.forEach(Lang.bind(this, function(provider) {
let previousProviderResults = previousResults[provider.id];
if (isSubSearch && previousProviderResults)
provider.getSubsearchResultSet(previousProviderResults, terms, Lang.bind(this, this._gotResults, provider), this._cancellable);
else
provider.getInitialResultSet(terms, Lang.bind(this, this._gotResults, provider), this._cancellable);
}));
}
});
Signals.addSignalMethods(SearchSystem.prototype);
const MaxWidthBin = new Lang.Class({
Name: 'MaxWidthBin',
Extends: St.Bin,
vfunc_allocate: function(box, flags) {
let themeNode = this.get_theme_node();
let maxWidth = themeNode.get_max_width();
let availWidth = box.x2 - box.x1;
let adjustedBox = box;
if (availWidth > maxWidth) {
let excessWidth = availWidth - maxWidth;
adjustedBox.x1 += Math.floor(excessWidth / 2);
adjustedBox.x2 -= Math.floor(excessWidth / 2);
}
this.parent(adjustedBox, flags);
}
});
const SearchResult = new Lang.Class({
Name: 'SearchResult',
_init: function(provider, metaInfo) {
this.provider = provider;
this.metaInfo = metaInfo;
this.actor = new St.Button({ reactive: true,
can_focus: true,
track_hover: true,
x_align: St.Align.START,
y_fill: true });
this.actor._delegate = this;
this.actor.connect('clicked', Lang.bind(this, this.activate));
},
activate: function() {
this.emit('activate', this.metaInfo.id);
},
setSelected: function(selected) {
if (selected)
this.actor.add_style_pseudo_class('selected');
else
this.actor.remove_style_pseudo_class('selected');
}
});
Signals.addSignalMethods(SearchResult.prototype);
const ListSearchResult = new Lang.Class({
Name: 'ListSearchResult',
Extends: SearchResult,
ICON_SIZE: 64,
_init: function(provider, metaInfo) {
this.parent(provider, metaInfo);
this.actor.style_class = 'list-search-result';
this.actor.x_fill = true;
let content = new St.BoxLayout({ style_class: 'list-search-result-content',
vertical: false });
this.actor.set_child(content);
// An icon for, or thumbnail of, content
let icon = this.metaInfo['createIcon'](this.ICON_SIZE);
if (icon) {
content.add(icon);
}
let details = new St.BoxLayout({ vertical: true });
content.add(details, { x_fill: true,
y_fill: false,
x_align: St.Align.START,
y_align: St.Align.MIDDLE });
let title = new St.Label({ style_class: 'list-search-result-title',
text: this.metaInfo['name'] })
details.add(title, { x_fill: false,
y_fill: false,
x_align: St.Align.START,
y_align: St.Align.START });
this.actor.label_actor = title;
if (this.metaInfo['description']) {
let description = new St.Label({ style_class: 'list-search-result-description' });
description.clutter_text.set_markup(this.metaInfo['description']);
details.add(description, { x_fill: false,
y_fill: false,
x_align: St.Align.START,
y_align: St.Align.END });
}
}
});
const GridSearchResult = new Lang.Class({
Name: 'GridSearchResult',
Extends: SearchResult,
_init: function(provider, metaInfo) {
this.parent(provider, metaInfo);
this.actor.style_class = 'grid-search-result';
let content = provider.createResultObject(metaInfo);
let dragSource = null;
if (content == null) {
let actor = new St.Bin();
let icon = new IconGrid.BaseIcon(this.metaInfo['name'],
{ createIcon: this.metaInfo['createIcon'] });
actor.set_child(icon.actor);
actor.label_actor = icon.label;
dragSource = icon.icon;
content = { actor: actor, icon: icon };
} else {
if (content._delegate && content._delegate.getDragActorSource)
dragSource = content._delegate.getDragActorSource();
}
this.actor.set_child(content.actor);
this.actor.label_actor = content.actor.label_actor;
this.icon = content.icon;
let draggable = DND.makeDraggable(this.actor);
draggable.connect('drag-begin',
Lang.bind(this, function() {
Main.overview.beginItemDrag(this);
}));
draggable.connect('drag-cancelled',
Lang.bind(this, function() {
Main.overview.cancelledItemDrag(this);
}));
draggable.connect('drag-end',
Lang.bind(this, function() {
Main.overview.endItemDrag(this);
}));
if (!dragSource)
// not exactly right, but alignment problems are hard to notice
dragSource = content;
this._dragActorSource = dragSource;
},
getDragActorSource: function() {
return this._dragActorSource;
},
getDragActor: function() {
return this.metaInfo['createIcon'](Main.overview.dashIconSize);
},
shellWorkspaceLaunch: function(params) {
if (this.provider.dragActivateResult)
this.provider.dragActivateResult(this.metaInfo.id, params);
else
this.provider.activateResult(this.metaInfo.id, this.terms);
}
});
const SearchResultsBase = new Lang.Class({
Name: 'SearchResultsBase',
_init: function(provider) {
this.provider = provider;
this._terms = [];
this.actor = new St.BoxLayout({ style_class: 'search-section',
vertical: true });
this._resultDisplayBin = new St.Bin({ x_fill: true,
y_fill: true });
this.actor.add(this._resultDisplayBin, { expand: true });
let separator = new Separator.HorizontalSeparator({ style_class: 'search-section-separator' });
this.actor.add(separator.actor);
this._resultDisplays = {};
this._cancellable = new Gio.Cancellable();
},
destroy: function() {
this.actor.destroy();
this._terms = [];
},
_clearResultDisplay: function() {
},
clear: function() {
for (let resultId in this._resultDisplays)
this._resultDisplays[resultId].actor.destroy();
this._resultDisplays = {};
this._clearResultDisplay();
this.actor.hide();
},
_keyFocusIn: function(actor) {
this.emit('key-focus-in', actor);
},
_activateResult: function(result, id) {
this.provider.activateResult(id, this._terms);
Main.overview.toggle();
},
_setMoreIconVisible: function(visible) {
},
_ensureResultActors: function(results, callback) {
let metasNeeded = results.filter(Lang.bind(this, function(resultId) {
return this._resultDisplays[resultId] === undefined;
}));
if (metasNeeded.length === 0) {
callback(true);
} else {
this._cancellable.cancel();
this._cancellable.reset();
this.provider.getResultMetas(metasNeeded, Lang.bind(this, function(metas) {
if (metas.length == 0) {
callback(false);
return;
}
if (metas.length != metasNeeded.length) {
log('Wrong number of result metas returned by search provider');
callback(false);
return;
}
metasNeeded.forEach(Lang.bind(this, function(resultId, i) {
let meta = metas[i];
let display = this._createResultDisplay(meta);
display.connect('activate', Lang.bind(this, this._activateResult));
display.actor.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this._resultDisplays[resultId] = display;
}));
callback(true);
}), this._cancellable);
}
},
updateSearch: function(providerResults, terms, callback) {
this._terms = terms;
if (providerResults.length == 0) {
this._clearResultDisplay();
this.actor.hide();
callback();
} else {
let maxResults = this._getMaxDisplayedResults();
let results = this.provider.filterResults(providerResults, maxResults);
let hasMoreResults = results.length < providerResults.length;
this._ensureResultActors(results, Lang.bind(this, function(successful) {
this._clearResultDisplay();
if (!successful)
return;
// To avoid CSS transitions causing flickering when
// the first search result stays the same, we hide the
// content while filling in the results.
this.actor.hide();
this._clearResultDisplay();
results.forEach(Lang.bind(this, function(resultId) {
this._addItem(this._resultDisplays[resultId]);
}));
this._setMoreIconVisible(hasMoreResults && this.provider.canLaunchSearch);
this.actor.show();
callback();
}));
}
}
});
const ListSearchResults = new Lang.Class({
Name: 'ListSearchResults',
Extends: SearchResultsBase,
_init: function(provider) {
this.parent(provider);
this._container = new St.BoxLayout({ style_class: 'search-section-content' });
this.providerIcon = new ProviderIcon(provider);
this.providerIcon.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this.providerIcon.connect('clicked', Lang.bind(this,
function() {
provider.launchSearch(this._terms);
Main.overview.toggle();
}));
this._container.add(this.providerIcon, { x_fill: false,
y_fill: false,
x_align: St.Align.START,
y_align: St.Align.START });
this._content = new St.BoxLayout({ style_class: 'list-search-results',
vertical: true });
this._container.add(this._content, { expand: true });
this._resultDisplayBin.set_child(this._container);
},
_setMoreIconVisible: function(visible) {
this.providerIcon.moreIcon.visible = true;
},
_getMaxDisplayedResults: function() {
return MAX_LIST_SEARCH_RESULTS_ROWS;
},
_clearResultDisplay: function () {
this._content.remove_all_children();
},
_createResultDisplay: function(meta) {
return new ListSearchResult(this.provider, meta);
},
_addItem: function(display) {
this._content.add_actor(display.actor);
},
getFirstResult: function() {
if (this._content.get_n_children() > 0)
return this._content.get_child_at_index(0)._delegate;
else
return null;
}
});
Signals.addSignalMethods(ListSearchResults.prototype);
const GridSearchResults = new Lang.Class({
Name: 'GridSearchResults',
Extends: SearchResultsBase,
_init: function(provider, parentContainer) {
this.parent(provider);
// We need to use the parent container to know how much results we can show.
// None of the actors in this class can be used for that, since the main actor
// goes hidden when no results are displayed, and then it lost its allocation.
// Then on the next use of _getMaxDisplayedResults allocation is 0, en therefore
// it doesn't show any result although we have some.
this._parentContainer = parentContainer;
this._grid = new IconGrid.IconGrid({ rowLimit: MAX_GRID_SEARCH_RESULTS_ROWS,
xAlign: St.Align.START });
this._bin = new St.Bin({ x_align: St.Align.MIDDLE });
this._bin.set_child(this._grid.actor);
this._resultDisplayBin.set_child(this._bin);
},
_getMaxDisplayedResults: function() {
let parentThemeNode = this._parentContainer.get_theme_node();
let availableWidth = parentThemeNode.adjust_for_width(this._parentContainer.width);
return this._grid.columnsForWidth(availableWidth) * this._grid.getRowLimit();
},
_renderResults: function(metas) {
for (let i = 0; i < metas.length; i++) {
let display = new GridSearchResult(this.provider, metas[i]);
display.connect('activate', Lang.bind(this, this._activateResult));
display.actor.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this._grid.addItem(display);
}
},
_clearResultDisplay: function () {
this._grid.removeAll();
},
_createResultDisplay: function(meta) {
return new GridSearchResult(this.provider, meta);
},
_addItem: function(display) {
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this._grid.addItem(display);
},
getFirstResult: function() {
if (this._grid.visibleItemsCount() > 0)
return this._grid.getItemAtIndex(0)._delegate;
else
return null;
}
});
Signals.addSignalMethods(GridSearchResults.prototype);
const SearchResults = new Lang.Class({
Name: 'SearchResults',
_init: function() {
this.actor = new St.BoxLayout({ name: 'searchResults',
vertical: true });
this._content = new St.BoxLayout({ name: 'searchResultsContent',
vertical: true });
this._contentBin = new MaxWidthBin({ name: 'searchResultsBin',
x_fill: true,
y_fill: true,
child: this._content });
let scrollChild = new St.BoxLayout();
scrollChild.add(this._contentBin, { expand: true });
this._scrollView = new St.ScrollView({ x_fill: true,
y_fill: false,
overlay_scrollbars: true,
style_class: 'search-display vfade' });
this._scrollView.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
this._scrollView.add_actor(scrollChild);
let action = new Clutter.PanAction({ interpolate: true });
action.connect('pan', Lang.bind(this, this._onPan));
this._scrollView.add_action(action);
this.actor.add(this._scrollView, { x_fill: true,
y_fill: true,
expand: true,
x_align: St.Align.START,
y_align: St.Align.START });
this._statusText = new St.Label({ style_class: 'search-statustext' });
this._statusBin = new St.Bin({ x_align: St.Align.MIDDLE,
y_align: St.Align.MIDDLE });
this._content.add(this._statusBin, { expand: true });
this._statusBin.add_actor(this._statusText);
this._highlightDefault = false;
this._defaultResult = null;
this._searchSystem = new SearchSystem();
this._searchSystem.connect('search-updated', Lang.bind(this, this._updateResults));
this._searchSystem.connect('providers-changed', Lang.bind(this, this._updateProviderDisplays));
this._updateProviderDisplays();
},
_onPan: function(action) {
let [dist, dx, dy] = action.get_motion_delta(0);
let adjustment = this._scrollView.vscroll.adjustment;
adjustment.value -= (dy / this.actor.height) * adjustment.page_size;
return false;
},
_keyFocusIn: function(provider, actor) {
Util.ensureActorVisibleInScrollView(this._scrollView, actor);
},
_ensureProviderDisplay: function(provider) {
if (provider.display)
return;
let providerDisplay;
if (provider.appInfo)
providerDisplay = new ListSearchResults(provider);
else
providerDisplay = new GridSearchResults(provider, this._content);
providerDisplay.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this._content.add(providerDisplay.actor);
provider.display = providerDisplay;
},
_updateProviderDisplays: function() {
this._searchSystem.getProviders().forEach(Lang.bind(this, this._ensureProviderDisplay));
},
_clearDisplay: function() {
this._searchSystem.getProviders().forEach(function(provider) {
provider.display.clear();
});
},
reset: function() {
this._searchSystem.reset();
this._statusBin.hide();
this._clearDisplay();
this._defaultResult = null;
},
startingSearch: function() {
this.reset();
this._statusText.set_text(_("Searching…"));
this._statusBin.show();
},
setTerms: function(terms) {
this._searchSystem.setTerms(terms);
},
_maybeSetInitialSelection: function() {
let newDefaultResult = null;
let providers = this._searchSystem.getProviders();
for (let i = 0; i < providers.length; i++) {
let provider = providers[i];
let display = provider.display;
if (!display.actor.visible)
continue;
let firstResult = display.getFirstResult();
if (firstResult) {
newDefaultResult = firstResult;
break; // select this one!
}
}
if (newDefaultResult != this._defaultResult) {
if (this._defaultResult)
this._defaultResult.setSelected(false);
if (newDefaultResult) {
newDefaultResult.setSelected(this._highlightDefault);
if (this._highlightDefault)
Util.ensureActorVisibleInScrollView(this._scrollView, newDefaultResult.actor);
}
this._defaultResult = newDefaultResult;
}
},
_updateStatusText: function () {
let haveResults = this._searchSystem.getProviders().some(function(provider) {
let display = provider.display;
return (display.getFirstResult() != null);
});
if (!haveResults) {
this._statusText.set_text(_("No results."));
this._statusBin.show();
} else {
this._statusBin.hide();
}
},
_updateResults: function(searchSystem, provider, results) {
let terms = searchSystem.getTerms();
let display = provider.display;
display.updateSearch(results, terms, Lang.bind(this, function() {
this._maybeSetInitialSelection();
this._updateStatusText();
}));
},
activateDefault: function() {
if (this._defaultResult)
this._defaultResult.activate();
},
highlightDefault: function(highlight) {
this._highlightDefault = highlight;
if (this._defaultResult) {
this._defaultResult.setSelected(highlight);
if (highlight)
Util.ensureActorVisibleInScrollView(this._scrollView, this._defaultResult.actor);
}
},
navigateFocus: function(direction) {
let rtl = this.actor.get_text_direction() == Clutter.TextDirection.RTL;
if (direction == Gtk.DirectionType.TAB_BACKWARD ||
direction == (rtl ? Gtk.DirectionType.RIGHT
: Gtk.DirectionType.LEFT) ||
direction == Gtk.DirectionType.UP) {
this.actor.navigate_focus(null, direction, false);
return;
}
let from = this._defaultResult ? this._defaultResult.actor : null;
this.actor.navigate_focus(from, direction, false);
}
});
const ProviderIcon = new Lang.Class({
Name: 'ProviderIcon',
Extends: St.Button,
PROVIDER_ICON_SIZE: 48,
_init: function(provider) {
this.provider = provider;
this.parent({ style_class: 'search-provider-icon',
reactive: true,
can_focus: true,
accessible_name: provider.appInfo.get_name(),
track_hover: true });
this._content = new St.Widget({ layout_manager: new Clutter.BinLayout() });
this.set_child(this._content);
let rtl = (this.get_text_direction() == Clutter.TextDirection.RTL);
this.moreIcon = new St.Widget({ style_class: 'search-provider-icon-more',
visible: false,
x_align: rtl ? Clutter.ActorAlign.START : Clutter.ActorAlign.END,
y_align: Clutter.ActorAlign.END,
x_expand: true,
y_expand: true });
let icon = new St.Icon({ icon_size: this.PROVIDER_ICON_SIZE,
gicon: provider.appInfo.get_icon() });
this._content.add_actor(icon);
this._content.add_actor(this.moreIcon);
}
});