Move bg/js/settings(2) (#1385)

* Move bg/js/settings/ to js/settings/

* Move bg/js/settings2/ to js/settings/

1 files changed, 243 insertions, 0 deletions

diff --git a/ext/js/settings/keyboard-mouse-input-field.js b/ext/js/settings/keyboard-mouse-input-field.js
new file mode 100644
index 00000000..09477519
--- /dev/null
+++ b/ext/js/settings/keyboard-mouse-input-field.js
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2020-2021  Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* global
+ * DocumentUtil
+ * HotkeyUtil
+ */
+
+class KeyboardMouseInputField extends EventDispatcher {
+    constructor(inputNode, mouseButton, os, isPointerTypeSupported=null) {
+        super();
+        this._inputNode = inputNode;
+        this._mouseButton = mouseButton;
+        this._isPointerTypeSupported = isPointerTypeSupported;
+        this._hotkeyUtil = new HotkeyUtil(os);
+        this._eventListeners = new EventListenerCollection();
+        this._key = null;
+        this._modifiers = [];
+        this._penPointerIds = new Set();
+        this._mouseModifiersSupported = false;
+        this._keySupported = false;
+    }
+
+    get modifiers() {
+        return this._modifiers;
+    }
+
+    prepare(key, modifiers, mouseModifiersSupported=false, keySupported=false) {
+        this.cleanup();
+
+        this._mouseModifiersSupported = mouseModifiersSupported;
+        this._keySupported = keySupported;
+        this.setInput(key, modifiers);
+        const events = [
+            [this._inputNode, 'keydown', this._onModifierKeyDown.bind(this), false],
+            [this._inputNode, 'keyup', this._onModifierKeyUp.bind(this), false]
+        ];
+        if (mouseModifiersSupported && this._mouseButton !== null) {
+            events.push(
+                [this._mouseButton, 'mousedown', this._onMouseButtonMouseDown.bind(this), false],
+                [this._mouseButton, 'pointerdown', this._onMouseButtonPointerDown.bind(this), false],
+                [this._mouseButton, 'pointerover', this._onMouseButtonPointerOver.bind(this), false],
+                [this._mouseButton, 'pointerout', this._onMouseButtonPointerOut.bind(this), false],
+                [this._mouseButton, 'pointercancel', this._onMouseButtonPointerCancel.bind(this), false],
+                [this._mouseButton, 'mouseup', this._onMouseButtonMouseUp.bind(this), false],
+                [this._mouseButton, 'contextmenu', this._onMouseButtonContextMenu.bind(this), false]
+            );
+        }
+        for (const args of events) {
+            this._eventListeners.addEventListener(...args);
+        }
+    }
+
+    setInput(key, modifiers) {
+        this._key = key;
+        this._modifiers = this._sortModifiers(modifiers);
+        this._updateDisplayString();
+    }
+
+    cleanup() {
+        this._eventListeners.removeAllEventListeners();
+        this._modifiers = [];
+        this._key = null;
+        this._mouseModifiersSupported = false;
+        this._keySupported = false;
+        this._penPointerIds.clear();
+    }
+
+    clearInputs() {
+        this._updateModifiers([], null);
+    }
+
+    // Private
+
+    _sortModifiers(modifiers) {
+        return this._hotkeyUtil.sortModifiers(modifiers);
+    }
+
+    _updateDisplayString() {
+        const displayValue = this._hotkeyUtil.getInputDisplayValue(this._key, this._modifiers);
+        this._inputNode.value = displayValue;
+    }
+
+    _getModifierKeys(e) {
+        const modifiers = new Set(DocumentUtil.getActiveModifiers(e));
+        // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/metaKey
+        // https://askubuntu.com/questions/567731/why-is-shift-alt-being-mapped-to-meta
+        // It works with mouse events on some platforms, so try to determine if metaKey is pressed.
+        // This is a hack and only works when both Shift and Alt are not pressed.
+        if (
+            !modifiers.has('meta') &&
+            e.key === 'Meta' &&
+            !(
+                modifiers.size === 2 &&
+                modifiers.has('shift') &&
+                modifiers.has('alt')
+            )
+        ) {
+            modifiers.add('meta');
+        }
+        return modifiers;
+    }
+
+    _isModifierKey(keyName) {
+        switch (keyName) {
+            case 'AltLeft':
+            case 'AltRight':
+            case 'ControlLeft':
+            case 'ControlRight':
+            case 'MetaLeft':
+            case 'MetaRight':
+            case 'ShiftLeft':
+            case 'ShiftRight':
+            case 'OSLeft':
+            case 'OSRight':
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    _onModifierKeyDown(e) {
+        e.preventDefault();
+
+        let key = e.code;
+        if (key === 'Unidentified' || key === '') { key = void 0; }
+        if (this._keySupported) {
+            this._updateModifiers([...this._getModifierKeys(e)], this._isModifierKey(key) ? void 0 : key);
+        } else {
+            switch (key) {
+                case 'Escape':
+                case 'Backspace':
+                    this.clearInputs();
+                    break;
+                default:
+                    this._addModifiers(this._getModifierKeys(e));
+                    break;
+            }
+        }
+    }
+
+    _onModifierKeyUp(e) {
+        e.preventDefault();
+    }
+
+    _onMouseButtonMouseDown(e) {
+        e.preventDefault();
+        this._addModifiers(DocumentUtil.getActiveButtons(e));
+    }
+
+    _onMouseButtonPointerDown(e) {
+        if (!e.isPrimary) { return; }
+
+        let {pointerType, pointerId} = e;
+        // Workaround for Firefox bug not detecting certain 'touch' events as 'pen' events.
+        if (this._penPointerIds.has(pointerId)) { pointerType = 'pen'; }
+
+        if (
+            typeof this._isPointerTypeSupported !== 'function' ||
+            !this._isPointerTypeSupported(pointerType)
+        ) {
+            return;
+        }
+        e.preventDefault();
+        this._addModifiers(DocumentUtil.getActiveButtons(e));
+    }
+
+    _onMouseButtonPointerOver(e) {
+        const {pointerType, pointerId} = e;
+        if (pointerType === 'pen') {
+            this._penPointerIds.add(pointerId);
+        }
+    }
+
+    _onMouseButtonPointerOut(e) {
+        const {pointerId} = e;
+        this._penPointerIds.delete(pointerId);
+    }
+
+    _onMouseButtonPointerCancel(e) {
+        this._onMouseButtonPointerOut(e);
+    }
+
+    _onMouseButtonMouseUp(e) {
+        e.preventDefault();
+    }
+
+    _onMouseButtonContextMenu(e) {
+        e.preventDefault();
+    }
+
+    _addModifiers(newModifiers, newKey) {
+        const modifiers = new Set(this._modifiers);
+        for (const modifier of newModifiers) {
+            modifiers.add(modifier);
+        }
+        this._updateModifiers([...modifiers], newKey);
+    }
+
+    _updateModifiers(modifiers, newKey) {
+        modifiers = this._sortModifiers(modifiers);
+
+        let changed = false;
+        if (typeof newKey !== 'undefined' && this._key !== newKey) {
+            this._key = newKey;
+            changed = true;
+        }
+        if (!this._areArraysEqual(this._modifiers, modifiers)) {
+            this._modifiers = modifiers;
+            changed = true;
+        }
+
+        this._updateDisplayString();
+        if (changed) {
+            this.trigger('change', {modifiers: this._modifiers, key: this._key});
+        }
+    }
+
+    _areArraysEqual(array1, array2) {
+        const length = array1.length;
+        if (length !== array2.length) { return false; }
+
+        for (let i = 0; i < length; ++i) {
+            if (array1[i] !== array2[i]) { return false; }
+        }
+
+        return true;
+    }
+}