gnome-shell/js/ui/searchDisplay.js

603 lines
20 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
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 DND = imports.ui.dnd;
const IconGrid = imports.ui.iconGrid;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const Separator = imports.ui.separator;
const Search = imports.ui.search;
const Util = imports.misc.util;
const MAX_LIST_SEARCH_RESULTS_ROWS = 3;
const MAX_GRID_SEARCH_RESULTS_ROWS = 1;
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, terms) {
this.provider = provider;
this.metaInfo = metaInfo;
this.terms = terms;
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.provider.activateResult(this.metaInfo.id, this.terms);
Main.overview.toggle();
},
setSelected: function(selected) {
if (selected)
this.actor.add_style_pseudo_class('selected');
else
this.actor.remove_style_pseudo_class('selected');
}
});
const ListSearchResult = new Lang.Class({
Name: 'ListSearchResult',
Extends: SearchResult,
ICON_SIZE: 64,
_init: function(provider, metaInfo, terms) {
this.parent(provider, metaInfo, terms);
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, terms) {
this.parent(provider, metaInfo, terms);
this.actor.style_class = 'grid-search-result';
let content = provider.createResultActor(metaInfo, terms);
let dragSource = null;
if (content == null) {
content = new St.Bin();
let icon = new IconGrid.BaseIcon(this.metaInfo['name'],
{ createIcon: this.metaInfo['createIcon'] });
content.set_child(icon.actor);
content.label_actor = icon.label;
dragSource = icon.icon;
} else {
if (content._delegate && content._delegate.getDragActorSource)
dragSource = content._delegate.getDragActorSource();
}
this.actor.set_child(content);
this.actor.label_actor = content.label_actor;
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 ListSearchResults = new Lang.Class({
Name: 'ListSearchResults',
_init: function(provider) {
this.provider = provider;
this.actor = new St.BoxLayout({ style_class: 'search-section-content' });
this.providerIcon = new ProviderIcon(provider);
this.providerIcon.connect('clicked', Lang.bind(this,
function() {
provider.launchSearch(this._terms);
Main.overview.toggle();
}));
this.actor.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.actor.add(this._content, { expand: true });
this._notDisplayedResult = [];
this._terms = [];
this._pendingClear = false;
},
getResultsForDisplay: function() {
let alreadyVisible = this._pendingClear ? 0 : this.getVisibleResultCount();
let canDisplay = MAX_LIST_SEARCH_RESULTS_ROWS - alreadyVisible;
let newResults = this._notDisplayedResult.splice(0, canDisplay);
return newResults;
},
getVisibleResultCount: function() {
return this._content.get_n_children();
},
hasMoreResults: function() {
return this._notDisplayedResult.length > 0;
},
setResults: function(results, terms) {
// copy the lists
this._notDisplayedResult = results.slice(0);
this._terms = terms.slice(0);
this._pendingClear = true;
},
_keyFocusIn: function(icon) {
this.emit('key-focus-in', icon);
},
renderResults: function(metas) {
for (let i = 0; i < metas.length; i++) {
let display = new ListSearchResult(this.provider, metas[i], this._terms);
display.actor.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this._content.add_actor(display.actor);
}
},
clear: function () {
this._content.destroy_all_children();
this._pendingClear = false;
},
getFirstResult: function() {
if (this.getVisibleResultCount() > 0)
return this._content.get_child_at_index(0)._delegate;
else
return null;
}
});
Signals.addSignalMethods(ListSearchResults.prototype);
const GridSearchResults = new Lang.Class({
Name: 'GridSearchResults',
_init: function(provider) {
this.provider = provider;
this._grid = new IconGrid.IconGrid({ rowLimit: MAX_GRID_SEARCH_RESULTS_ROWS,
xAlign: St.Align.START });
this.actor = new St.Bin({ x_align: St.Align.MIDDLE });
this.actor.set_child(this._grid.actor);
this._notDisplayedResult = [];
this._terms = [];
this._pendingClear = false;
},
getResultsForDisplay: function() {
let alreadyVisible = this._pendingClear ? 0 : this._grid.visibleItemsCount();
let canDisplay = this._grid.childrenInRow(this.actor.width) * this._grid.getRowLimit()
- alreadyVisible;
let newResults = this._notDisplayedResult.splice(0, canDisplay);
return newResults;
},
getVisibleResultCount: function() {
return this._grid.visibleItemsCount();
},
hasMoreResults: function() {
return this._notDisplayedResult.length > 0;
},
setResults: function(results, terms) {
// copy the lists
this._notDisplayedResult = results.slice(0);
this._terms = terms.slice(0);
this._pendingClear = true;
},
_keyFocusIn: function(icon) {
this.emit('key-focus-in', icon);
},
renderResults: function(metas) {
for (let i = 0; i < metas.length; i++) {
let display = new GridSearchResult(this.provider, metas[i], this._terms);
display.actor.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
this._grid.addItem(display.actor);
}
},
clear: function () {
this._grid.removeAll();
this._pendingClear = false;
},
getFirstResult: function() {
if (this.getVisibleResultCount() > 0)
return this._grid.getItemAtIndex(0)._delegate;
else
return null;
}
});
Signals.addSignalMethods(GridSearchResults.prototype);
const SearchResults = new Lang.Class({
Name: 'SearchResults',
_init: function(searchSystem) {
this._searchSystem = searchSystem;
this._searchSystem.connect('search-updated', Lang.bind(this, this._updateResults));
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._providers = this._searchSystem.getProviders();
this._providerMeta = [];
for (let i = 0; i < this._providers.length; i++) {
this.createProviderMeta(this._providers[i]);
}
this._highlightDefault = false;
this._defaultResult = null;
},
_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, icon) {
Util.ensureActorVisibleInScrollView(this._scrollView, icon);
},
createProviderMeta: function(provider) {
let providerBox = new St.BoxLayout({ style_class: 'search-section',
vertical: true });
let providerIcon = null;
let resultDisplay = null;
if (provider.appInfo) {
resultDisplay = new ListSearchResults(provider);
providerIcon = resultDisplay.providerIcon;
} else {
resultDisplay = new GridSearchResults(provider);
}
resultDisplay.connect('key-focus-in', Lang.bind(this, this._keyFocusIn));
let resultDisplayBin = new St.Bin({ child: resultDisplay.actor,
x_fill: true,
y_fill: true });
providerBox.add(resultDisplayBin, { expand: true });
let separator = new Separator.HorizontalSeparator({ style_class: 'search-section-separator' });
providerBox.add(separator.actor);
this._providerMeta.push({ provider: provider,
actor: providerBox,
icon: providerIcon,
resultDisplay: resultDisplay });
this._content.add(providerBox);
},
destroyProviderMeta: function(provider) {
for (let i=0; i < this._providerMeta.length; i++) {
let meta = this._providerMeta[i];
if (meta.provider == provider) {
meta.actor.destroy();
this._providerMeta.splice(i, 1);
break;
}
}
},
_clearDisplay: function() {
for (let i = 0; i < this._providerMeta.length; i++) {
let meta = this._providerMeta[i];
meta.resultDisplay.clear();
meta.actor.hide();
}
},
_clearDisplayForProvider: function(provider) {
let meta = this._metaForProvider(provider);
meta.resultDisplay.clear();
meta.actor.hide();
},
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();
},
_metaForProvider: function(provider) {
return this._providerMeta[this._providers.indexOf(provider)];
},
_maybeSetInitialSelection: function() {
let newDefaultResult = null;
for (let i = 0; i < this._providerMeta.length; i++) {
let meta = this._providerMeta[i];
if (!meta.actor.visible)
continue;
let firstResult = meta.resultDisplay.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);
this._defaultResult = newDefaultResult;
}
},
_updateStatusText: function () {
let haveResults = false;
for (let i = 0; i < this._providerMeta.length; ++i)
if (this._providerMeta[i].resultDisplay.getFirstResult()) {
haveResults = true;
break;
}
if (!haveResults) {
this._statusText.set_text(_("No results."));
this._statusBin.show();
} else {
this._statusBin.hide();
}
},
_updateResults: function(searchSystem, results) {
let terms = searchSystem.getTerms();
let [provider, providerResults] = results;
let meta = this._metaForProvider(provider);
if (providerResults.length == 0) {
this._clearDisplayForProvider(provider);
meta.resultDisplay.setResults([], []);
this._maybeSetInitialSelection();
this._updateStatusText();
} else {
meta.resultDisplay.setResults(providerResults, terms);
let results = meta.resultDisplay.getResultsForDisplay();
if (meta.icon)
meta.icon.moreIcon.visible =
meta.resultDisplay.hasMoreResults() &&
provider.canLaunchSearch;
provider.getResultMetas(results, Lang.bind(this, function(metas) {
this._clearDisplayForProvider(provider);
meta.actor.show();
// Hiding drops the key focus if we have it
let focus = global.stage.get_key_focus();
// To avoid CSS transitions causing flickering when
// the first search result stays the same, we hide the
// content while filling in the results.
this._content.hide();
meta.resultDisplay.renderResults(metas);
this._maybeSetInitialSelection();
this._updateStatusText();
this._content.show();
if (this._content.contains(focus))
global.stage.set_key_focus(focus);
}));
}
},
activateDefault: function() {
if (this._defaultResult)
this._defaultResult.activate();
},
highlightDefault: function(highlight) {
this._highlightDefault = highlight;
if (this._defaultResult)
this._defaultResult.setSelected(highlight);
},
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);
}
});