1bf27b1f18
Only recent IBus versions have support for this signal which is used for wayland clients. In order to work with older IBus versions we can silently ignore the signal's absence. https://bugzilla.gnome.org/show_bug.cgi?id=753476
288 lines
13 KiB
JavaScript
288 lines
13 KiB
JavaScript
// -*- 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 Signals = imports.signals;
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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 MAX_CANDIDATES_PER_PAGE = 16;
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const DEFAULT_INDEX_LABELS = [ '1', '2', '3', '4', '5', '6', '7', '8',
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'9', '0', 'a', 'b', 'c', 'd', 'e', 'f' ];
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const CandidateArea = new Lang.Class({
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Name: 'CandidateArea',
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_init: function() {
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this.actor = new St.BoxLayout({ vertical: true,
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visible: false });
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this._candidateBoxes = [];
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for (let i = 0; i < MAX_CANDIDATES_PER_PAGE; ++i) {
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let box = new St.BoxLayout({ style_class: 'candidate-box',
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reactive: true,
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track_hover: true });
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box._indexLabel = new St.Label({ style_class: 'candidate-index' });
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box._candidateLabel = new St.Label({ style_class: 'candidate-label' });
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box.add(box._indexLabel, { y_fill: false });
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box.add(box._candidateLabel, { y_fill: false });
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this._candidateBoxes.push(box);
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this.actor.add(box);
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let j = i;
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box.connect('button-release-event', Lang.bind(this, function(actor, event) {
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this.emit('candidate-clicked', j, event.get_button(), event.get_state());
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return Clutter.EVENT_PROPAGATE;
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}));
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}
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this._buttonBox = new St.BoxLayout({ style_class: 'candidate-page-button-box' });
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this._previousButton = new St.Button({ style_class: 'candidate-page-button candidate-page-button-previous button' });
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this._previousButton.child = new St.Icon({ style_class: 'candidate-page-button-icon' });
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this._buttonBox.add(this._previousButton, { expand: true });
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this._nextButton = new St.Button({ style_class: 'candidate-page-button candidate-page-button-next button' });
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this._nextButton.child = new St.Icon({ style_class: 'candidate-page-button-icon' });
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this._buttonBox.add(this._nextButton, { expand: true });
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this.actor.add(this._buttonBox);
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this._previousButton.connect('clicked', Lang.bind(this, function() {
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this.emit('previous-page');
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}));
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this._nextButton.connect('clicked', Lang.bind(this, function() {
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this.emit('next-page');
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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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if (this._orientation == IBus.Orientation.HORIZONTAL) {
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this.actor.vertical = false;
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this.actor.remove_style_class_name('vertical');
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this.actor.add_style_class_name('horizontal');
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this._previousButton.child.icon_name = 'go-previous-symbolic';
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this._nextButton.child.icon_name = 'go-next-symbolic';
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} else { // VERTICAL || SYSTEM
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this.actor.vertical = true;
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this.actor.add_style_class_name('vertical');
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this.actor.remove_style_class_name('horizontal');
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this._previousButton.child.icon_name = 'go-up-symbolic';
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this._nextButton.child.icon_name = 'go-down-symbolic';
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}
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},
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setCandidates: function(indexes, candidates, cursorPosition, cursorVisible) {
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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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let box = this._candidateBoxes[i];
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box.visible = visible;
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if (!visible)
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continue;
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box._indexLabel.text = ((indexes && indexes[i]) ? indexes[i] : DEFAULT_INDEX_LABELS[i]);
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box._candidateLabel.text = candidates[i];
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}
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this._candidateBoxes[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._candidateBoxes[cursorPosition].add_style_pseudo_class('selected');
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},
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updateButtons: function(wrapsAround, page, nPages) {
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if (nPages < 2) {
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this._buttonBox.hide();
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return;
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}
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this._buttonBox.show();
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this._previousButton.reactive = wrapsAround || page > 0;
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this._nextButton.reactive = wrapsAround || page < nPages - 1;
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},
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});
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Signals.addSignalMethods(CandidateArea.prototype);
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const CandidatePopup = new Lang.Class({
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Name: 'CandidatePopup',
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_init: function() {
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this._boxPointer = new BoxPointer.BoxPointer(St.Side.TOP);
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this._boxPointer.actor.visible = false;
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this._boxPointer.actor.style_class = 'candidate-popup-boxpointer';
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Main.layoutManager.addChrome(this._boxPointer.actor);
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let box = new St.BoxLayout({ style_class: 'candidate-popup-content',
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vertical: true });
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this._boxPointer.bin.set_child(box);
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this._preeditText = new St.Label({ style_class: 'candidate-popup-text',
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visible: false });
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box.add(this._preeditText);
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this._auxText = new St.Label({ style_class: 'candidate-popup-text',
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visible: false });
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box.add(this._auxText);
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this._candidateArea = new CandidateArea();
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box.add(this._candidateArea.actor);
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this._candidateArea.connect('previous-page', Lang.bind(this, function() {
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this._panelService.page_up();
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}));
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this._candidateArea.connect('next-page', Lang.bind(this, function() {
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this._panelService.page_down();
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}));
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this._candidateArea.connect('candidate-clicked', Lang.bind(this, function(ca, index, button, state) {
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this._panelService.candidate_clicked(index, button, state);
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}));
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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._setDummyCursorGeometry(x, y, w, h);
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}));
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try {
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panelService.connect('set-cursor-location-relative',
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Lang.bind(this, function(ps, x, y, w, h) {
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if (!global.display.focus_window)
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return;
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let window = global.display.focus_window.get_compositor_private();
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this._setDummyCursorGeometry(window.x + x, window.y + y, w, h);
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}));
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} catch(e) {
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// Only recent IBus versions have support for this signal
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// which is used for wayland clients. In order to work
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// with older IBus versions we can silently ignore the
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// signal's absence.
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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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this._preeditText.visible = visible;
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this._updateVisibility();
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this._preeditText.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._preeditText.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._preeditText.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._preeditText.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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this._auxText.visible = visible;
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this._updateVisibility();
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this._auxText.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._auxText.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._auxText.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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this._candidateArea.actor.visible = visible;
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this._updateVisibility();
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let nCandidates = lookupTable.get_number_of_candidates();
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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 nPages = Math.ceil(nCandidates / pageSize);
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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, nCandidates);
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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._candidateArea.setCandidates(indexes,
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candidates,
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cursorPos % pageSize,
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lookupTable.is_cursor_visible());
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this._candidateArea.setOrientation(lookupTable.get_orientation());
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this._candidateArea.updateButtons(lookupTable.is_round(), page, nPages);
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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._candidateArea.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._candidateArea.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._boxPointer.hide(BoxPointer.PopupAnimation.NONE);
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}));
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},
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_setDummyCursorGeometry: function(x, y, w, h) {
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Main.layoutManager.setDummyCursorGeometry(x, y, w, h);
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if (this._boxPointer.actor.visible)
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this._boxPointer.setPosition(Main.layoutManager.dummyCursor, 0);
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},
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_updateVisibility: function() {
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let isVisible = (this._preeditText.visible ||
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this._auxText.visible ||
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this._candidateArea.actor.visible);
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if (isVisible) {
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this._boxPointer.setPosition(Main.layoutManager.dummyCursor, 0);
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this._boxPointer.show(BoxPointer.PopupAnimation.NONE);
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this._boxPointer.actor.raise_top();
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} else {
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this._boxPointer.hide(BoxPointer.PopupAnimation.NONE);
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}
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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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