764527c8c9
Promises make asynchronous operations easier to manage, in particular when used through the async/await syntax that allows for asynchronous code to closely resemble synchronous one. gjs has included a Gio._promisify() helper for a while now, which monkey-patches methods that follow GIO's async pattern to return a Promise when called without a callback argument. Use that to get rid of all those GAsyncReadyCallbacks! https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1126
286 lines
9.6 KiB
JavaScript
286 lines
9.6 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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/* exported InputMethod */
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const { Clutter, GLib, Gio, GObject, IBus } = imports.gi;
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const Keyboard = imports.ui.status.keyboard;
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Gio._promisify(IBus.Bus.prototype,
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'create_input_context_async', 'create_input_context_async_finish');
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var HIDE_PANEL_TIME = 50;
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var InputMethod = GObject.registerClass(
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class InputMethod extends Clutter.InputMethod {
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_init() {
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super._init();
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this._hints = 0;
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this._purpose = 0;
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this._currentFocus = null;
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this._preeditStr = '';
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this._preeditPos = 0;
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this._preeditVisible = false;
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this._hidePanelId = 0;
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this._ibus = IBus.Bus.new_async();
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this._ibus.connect('connected', this._onConnected.bind(this));
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this._ibus.connect('disconnected', this._clear.bind(this));
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this.connect('notify::can-show-preedit', this._updateCapabilities.bind(this));
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this._inputSourceManager = Keyboard.getInputSourceManager();
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this._sourceChangedId = this._inputSourceManager.connect('current-source-changed',
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this._onSourceChanged.bind(this));
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this._currentSource = this._inputSourceManager.currentSource;
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if (this._ibus.is_connected())
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this._onConnected();
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}
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get currentFocus() {
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return this._currentFocus;
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}
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_updateCapabilities() {
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let caps = IBus.Capabilite.PREEDIT_TEXT | IBus.Capabilite.FOCUS | IBus.Capabilite.SURROUNDING_TEXT;
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if (this._context)
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this._context.set_capabilities(caps);
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}
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_onSourceChanged() {
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this._currentSource = this._inputSourceManager.currentSource;
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}
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async _onConnected() {
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this._cancellable = new Gio.Cancellable();
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try {
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this._context = await this._ibus.create_input_context_async(
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'gnome-shell', -1, this._cancellable);
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} catch (e) {
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if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED)) {
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logError(e);
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this._clear();
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}
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return;
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}
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this._context.connect('commit-text', this._onCommitText.bind(this));
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this._context.connect('delete-surrounding-text', this._onDeleteSurroundingText.bind(this));
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this._context.connect('update-preedit-text', this._onUpdatePreeditText.bind(this));
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this._context.connect('show-preedit-text', this._onShowPreeditText.bind(this));
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this._context.connect('hide-preedit-text', this._onHidePreeditText.bind(this));
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this._context.connect('forward-key-event', this._onForwardKeyEvent.bind(this));
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this._context.connect('destroy', this._clear.bind(this));
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this._updateCapabilities();
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}
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_clear() {
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if (this._cancellable) {
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this._cancellable.cancel();
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this._cancellable = null;
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}
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this._context = null;
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this._hints = 0;
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this._purpose = 0;
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this._preeditStr = '';
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this._preeditPos = 0;
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this._preeditVisible = false;
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}
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_emitRequestSurrounding() {
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if (this._context.needs_surrounding_text())
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this.emit('request-surrounding');
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}
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_onCommitText(_context, text) {
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this.commit(text.get_text());
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}
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_onDeleteSurroundingText(_context, offset, nchars) {
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try {
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this.delete_surrounding(offset, nchars);
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} catch (e) {
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// We may get out of bounds for negative offset on older mutter
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this.delete_surrounding(0, nchars + offset);
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}
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}
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_onUpdatePreeditText(_context, text, pos, visible) {
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if (text == null)
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return;
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let preedit = text.get_text();
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if (visible)
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this.set_preedit_text(preedit, pos);
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else if (this._preeditVisible)
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this.set_preedit_text(null, pos);
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this._preeditStr = preedit;
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this._preeditPos = pos;
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this._preeditVisible = visible;
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}
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_onShowPreeditText() {
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this._preeditVisible = true;
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this.set_preedit_text(this._preeditStr, this._preeditPos);
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}
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_onHidePreeditText() {
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this.set_preedit_text(null, this._preeditPos);
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this._preeditVisible = false;
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}
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_onForwardKeyEvent(_context, keyval, keycode, state) {
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let press = (state & IBus.ModifierType.RELEASE_MASK) == 0;
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state &= ~IBus.ModifierType.RELEASE_MASK;
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let curEvent = Clutter.get_current_event();
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let time;
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if (curEvent)
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time = curEvent.get_time();
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else
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time = global.display.get_current_time_roundtrip();
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this.forward_key(keyval, keycode + 8, state & Clutter.ModifierType.MODIFIER_MASK, time, press);
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}
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vfunc_focus_in(focus) {
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this._currentFocus = focus;
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if (this._context) {
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this._context.focus_in();
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this._emitRequestSurrounding();
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}
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if (this._hidePanelId) {
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GLib.source_remove(this._hidePanelId);
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this._hidePanelId = 0;
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}
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}
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vfunc_focus_out() {
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this._currentFocus = null;
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if (this._context)
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this._context.focus_out();
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if (this._preeditStr) {
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// Unset any preedit text
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this.set_preedit_text(null, 0);
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this._preeditStr = null;
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}
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this._hidePanelId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, HIDE_PANEL_TIME, () => {
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this.set_input_panel_state(Clutter.InputPanelState.OFF);
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this._hidePanelId = 0;
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return GLib.SOURCE_REMOVE;
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});
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}
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vfunc_reset() {
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if (this._context) {
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this._context.reset();
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this._emitRequestSurrounding();
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}
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if (this._preeditStr) {
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// Unset any preedit text
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this.set_preedit_text(null, 0);
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this._preeditStr = null;
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}
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}
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vfunc_set_cursor_location(rect) {
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if (this._context) {
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this._context.set_cursor_location(rect.get_x(), rect.get_y(),
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rect.get_width(), rect.get_height());
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this._emitRequestSurrounding();
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}
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}
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vfunc_set_surrounding(text, cursor, anchor) {
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if (!this._context || !text)
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return;
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let ibusText = IBus.Text.new_from_string(text);
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this._context.set_surrounding_text(ibusText, cursor, anchor);
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}
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vfunc_update_content_hints(hints) {
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let ibusHints = 0;
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if (hints & Clutter.InputContentHintFlags.COMPLETION)
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ibusHints |= IBus.InputHints.WORD_COMPLETION;
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if (hints & Clutter.InputContentHintFlags.SPELLCHECK)
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ibusHints |= IBus.InputHints.SPELLCHECK;
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if (hints & Clutter.InputContentHintFlags.AUTO_CAPITALIZATION)
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ibusHints |= IBus.InputHints.UPPERCASE_SENTENCES;
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if (hints & Clutter.InputContentHintFlags.LOWERCASE)
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ibusHints |= IBus.InputHints.LOWERCASE;
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if (hints & Clutter.InputContentHintFlags.UPPERCASE)
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ibusHints |= IBus.InputHints.UPPERCASE_CHARS;
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if (hints & Clutter.InputContentHintFlags.TITLECASE)
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ibusHints |= IBus.InputHints.UPPERCASE_WORDS;
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this._hints = ibusHints;
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if (this._context)
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this._context.set_content_type(this._purpose, this._hints);
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}
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vfunc_update_content_purpose(purpose) {
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let ibusPurpose = 0;
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if (purpose == Clutter.InputContentPurpose.NORMAL)
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ibusPurpose = IBus.InputPurpose.FREE_FORM;
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else if (purpose == Clutter.InputContentPurpose.ALPHA)
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ibusPurpose = IBus.InputPurpose.ALPHA;
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else if (purpose == Clutter.InputContentPurpose.DIGITS)
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ibusPurpose = IBus.InputPurpose.DIGITS;
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else if (purpose == Clutter.InputContentPurpose.NUMBER)
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ibusPurpose = IBus.InputPurpose.NUMBER;
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else if (purpose == Clutter.InputContentPurpose.PHONE)
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ibusPurpose = IBus.InputPurpose.PHONE;
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else if (purpose == Clutter.InputContentPurpose.URL)
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ibusPurpose = IBus.InputPurpose.URL;
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else if (purpose == Clutter.InputContentPurpose.EMAIL)
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ibusPurpose = IBus.InputPurpose.EMAIL;
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else if (purpose == Clutter.InputContentPurpose.NAME)
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ibusPurpose = IBus.InputPurpose.NAME;
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else if (purpose == Clutter.InputContentPurpose.PASSWORD)
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ibusPurpose = IBus.InputPurpose.PASSWORD;
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this._purpose = ibusPurpose;
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if (this._context)
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this._context.set_content_type(this._purpose, this._hints);
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}
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vfunc_filter_key_event(event) {
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if (!this._context)
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return false;
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if (!this._currentSource)
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return false;
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let state = event.get_state();
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if (state & IBus.ModifierType.IGNORED_MASK)
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return false;
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if (event.type() == Clutter.EventType.KEY_RELEASE)
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state |= IBus.ModifierType.RELEASE_MASK;
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this._context.process_key_event_async(
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event.get_key_symbol(),
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event.get_key_code() - 8, // Convert XKB keycodes to evcodes
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state, -1, this._cancellable,
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(context, res) => {
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if (context != this._context)
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return;
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try {
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let retval = context.process_key_event_async_finish(res);
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this.notify_key_event(event, retval);
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} catch (e) {
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if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
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log(`Error processing key on IM: ${e.message}`);
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}
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});
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return true;
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}
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});
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