229 lines
9.8 KiB
JavaScript
229 lines
9.8 KiB
JavaScript
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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const IBus = imports.gi.IBus;
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const Lang = imports.lang;
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const St = imports.gi.St;
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const BoxPointer = imports.ui.boxpointer;
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const Main = imports.ui.main;
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const PopupMenu = imports.ui.popupMenu;
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const MAX_CANDIDATES_PER_PAGE = 16;
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const CandidateArea = new Lang.Class({
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Name: 'CandidateArea',
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Extends: PopupMenu.PopupBaseMenuItem,
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_init: function() {
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this.parent({ reactive: false });
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// St.Table exhibits some sizing problems so let's go with a
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// clutter layout manager for now.
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this._table = new Clutter.Actor();
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this.addActor(this._table);
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this._tableLayout = new Clutter.TableLayout();
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this._table.set_layout_manager(this._tableLayout);
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this._indexLabels = [];
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this._candidateLabels = [];
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for (let i = 0; i < MAX_CANDIDATES_PER_PAGE; ++i) {
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this._indexLabels.push(new St.Label({ style_class: 'candidate-index' }));
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this._candidateLabels.push(new St.Label({ style_class: 'candidate-label' }));
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}
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this._orientation = -1;
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this._cursorPosition = 0;
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},
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_setOrientation: function(orientation) {
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if (this._orientation == orientation)
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return;
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this._orientation = orientation;
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this._table.remove_all_children();
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if (this._orientation == IBus.Orientation.HORIZONTAL)
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for (let i = 0; i < MAX_CANDIDATES_PER_PAGE; ++i) {
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this._tableLayout.pack(this._indexLabels[i], i*2, 0);
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this._tableLayout.pack(this._candidateLabels[i], i*2 + 1, 0);
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}
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else // VERTICAL || SYSTEM
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for (let i = 0; i < MAX_CANDIDATES_PER_PAGE; ++i) {
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this._tableLayout.pack(this._indexLabels[i], 0, i);
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this._tableLayout.pack(this._candidateLabels[i], 1, i);
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}
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},
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setCandidates: function(indexes, candidates, orientation, cursorPosition, cursorVisible) {
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this._setOrientation(orientation);
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for (let i = 0; i < MAX_CANDIDATES_PER_PAGE; ++i) {
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let visible = i < candidates.length;
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this._indexLabels[i].visible = visible;
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this._candidateLabels[i].visible = visible;
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if (!visible)
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continue;
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this._indexLabels[i].text = ((indexes && indexes[i]) ? indexes[i] : '%x.'.format(i + 1));
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this._candidateLabels[i].text = candidates[i];
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}
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this._candidateLabels[this._cursorPosition].remove_style_pseudo_class('selected');
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this._cursorPosition = cursorPosition;
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if (cursorVisible)
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this._candidateLabels[cursorPosition].add_style_pseudo_class('selected');
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},
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});
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const CandidatePopup = new Lang.Class({
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Name: 'CandidatePopup',
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Extends: PopupMenu.PopupMenu,
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_init: function() {
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this._cursor = new St.Bin({ opacity: 0 });
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Main.uiGroup.add_actor(this._cursor);
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this.parent(this._cursor, 0, St.Side.TOP);
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this.actor.hide();
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Main.uiGroup.add_actor(this.actor);
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this._preeditTextItem = new PopupMenu.PopupMenuItem('', { reactive: false });
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this._preeditTextItem.actor.hide();
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this.addMenuItem(this._preeditTextItem);
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this._auxTextItem = new PopupMenu.PopupMenuItem('', { reactive: false });
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this._auxTextItem.actor.hide();
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this.addMenuItem(this._auxTextItem);
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this.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
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this._lookupTableItem = new CandidateArea();
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this._lookupTableItem.actor.hide();
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this.addMenuItem(this._lookupTableItem);
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this._panelService = null;
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},
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setPanelService: function(panelService) {
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this._panelService = panelService;
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if (!panelService)
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return;
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panelService.connect('set-cursor-location',
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Lang.bind(this, function(ps, x, y, w, h) {
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this._cursor.set_position(x, y);
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this._cursor.set_size(w, h);
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}));
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panelService.connect('update-preedit-text',
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Lang.bind(this, function(ps, text, cursorPosition, visible) {
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if (visible)
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this._preeditTextItem.actor.show();
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else
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this._preeditTextItem.actor.hide();
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this._updateVisibility();
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this._preeditTextItem.actor.label_actor.text = text.get_text();
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let attrs = text.get_attributes();
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if (attrs)
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this._setTextAttributes(this._preeditTextItem.actor.label_actor.clutter_text,
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attrs);
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}));
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panelService.connect('show-preedit-text',
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Lang.bind(this, function(ps) {
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this._preeditTextItem.actor.show();
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this._updateVisibility();
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}));
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panelService.connect('hide-preedit-text',
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Lang.bind(this, function(ps) {
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this._preeditTextItem.actor.hide();
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this._updateVisibility();
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}));
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panelService.connect('update-auxiliary-text',
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Lang.bind(this, function(ps, text, visible) {
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if (visible)
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this._auxTextItem.actor.show();
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else
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this._auxTextItem.actor.hide();
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this._updateVisibility();
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this._auxTextItem.actor.label_actor.text = text.get_text();
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}));
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panelService.connect('show-auxiliary-text',
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Lang.bind(this, function(ps) {
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this._auxTextItem.actor.show();
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this._updateVisibility();
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}));
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panelService.connect('hide-auxiliary-text',
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Lang.bind(this, function(ps) {
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this._auxTextItem.actor.hide();
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this._updateVisibility();
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}));
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panelService.connect('update-lookup-table',
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Lang.bind(this, function(ps, lookupTable, visible) {
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if (visible)
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this._lookupTableItem.actor.show();
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else
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this._lookupTableItem.actor.hide();
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this._updateVisibility();
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let cursorPos = lookupTable.get_cursor_pos();
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let pageSize = lookupTable.get_page_size();
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let page = ((cursorPos == 0) ? 0 : Math.floor(cursorPos / pageSize));
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let startIndex = page * pageSize;
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let endIndex = Math.min((page + 1) * pageSize,
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lookupTable.get_number_of_candidates());
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let indexes = [];
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let indexLabel;
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for (let i = 0; indexLabel = lookupTable.get_label(i); ++i)
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indexes.push(indexLabel.get_text());
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let candidates = [];
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for (let i = startIndex; i < endIndex; ++i)
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candidates.push(lookupTable.get_candidate(i).get_text());
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this._lookupTableItem.setCandidates(indexes,
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candidates,
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lookupTable.get_orientation(),
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cursorPos % pageSize,
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lookupTable.is_cursor_visible());
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}));
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panelService.connect('show-lookup-table',
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Lang.bind(this, function(ps) {
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this._lookupTableItem.actor.show();
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this._updateVisibility();
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}));
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panelService.connect('hide-lookup-table',
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Lang.bind(this, function(ps) {
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this._lookupTableItem.actor.hide();
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this._updateVisibility();
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}));
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panelService.connect('focus-out',
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Lang.bind(this, function(ps) {
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this.close(BoxPointer.PopupAnimation.NONE);
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}));
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},
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_updateVisibility: function() {
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let isVisible = (this._preeditTextItem.actor.visible ||
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this._auxTextItem.actor.visible ||
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this._lookupTableItem.actor.visible);
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if (isVisible)
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this.open(BoxPointer.PopupAnimation.NONE);
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else
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this.close(BoxPointer.PopupAnimation.NONE);
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},
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_setTextAttributes: function(clutterText, ibusAttrList) {
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let attr;
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for (let i = 0; attr = ibusAttrList.get(i); ++i)
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if (attr.get_attr_type() == IBus.AttrType.BACKGROUND)
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clutterText.set_selection(attr.get_start_index(), attr.get_end_index());
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}
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});
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