Move mouse event handling to RFB class

Move the last remaining bits to the RFB class to keep things simple, as
the Mouse class no longer provides any real value.

core/input/mouse.js

@@ -1,127 +0,0 @@
-/*
- * noVNC: HTML5 VNC client
- * Copyright (C) 2019 The noVNC Authors
- * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
- */
-
-import * as Log from '../util/logging.js';
-import { setCapture, stopEvent, getPointerEvent } from '../util/events.js';
-
-export default class Mouse {
-    constructor(target) {
-        this._target = target || document;
-
-        this._pos = null;
-
-        this._eventHandlers = {
-            'mousedown': this._handleMouseDown.bind(this),
-            'mouseup': this._handleMouseUp.bind(this),
-            'mousemove': this._handleMouseMove.bind(this),
-            'mousedisable': this._handleMouseDisable.bind(this)
-        };
-
-        // ===== EVENT HANDLERS =====
-
-        this.onmousebutton = () => {}; // Handler for mouse button press/release
-        this.onmousemove = () => {}; // Handler for mouse movement
-    }
-
-    // ===== PRIVATE METHODS =====
-
-    _resetDoubleClickTimer() {
-        this._doubleClickTimer = null;
-    }
-
-    _handleMouseButton(e, down) {
-        this._updateMousePosition(e);
-        let pos = this._pos;
-
-        let bmask = 1 << e.button;
-
-        Log.Debug("onmousebutton " + (down ? "down" : "up") +
-                  ", x: " + pos.x + ", y: " + pos.y + ", bmask: " + bmask);
-        this.onmousebutton(pos.x, pos.y, down, bmask);
-
-        stopEvent(e);
-    }
-
-    _handleMouseDown(e) {
-        setCapture(this._target);
-
-        this._handleMouseButton(e, 1);
-    }
-
-    _handleMouseUp(e) {
-        this._handleMouseButton(e, 0);
-    }
-
-    _handleMouseMove(e) {
-        this._updateMousePosition(e);
-        this.onmousemove(this._pos.x, this._pos.y);
-        stopEvent(e);
-    }
-
-    _handleMouseDisable(e) {
-        /*
-         * Stop propagation if inside canvas area
-         * Note: This is only needed for the 'click' event as it fails
-         *       to fire properly for the target element so we have
-         *       to listen on the document element instead.
-         */
-        if (e.target == this._target) {
-            stopEvent(e);
-        }
-    }
-
-    // Update coordinates relative to target
-    _updateMousePosition(e) {
-        e = getPointerEvent(e);
-        const bounds = this._target.getBoundingClientRect();
-        let x;
-        let y;
-        // Clip to target bounds
-        if (e.clientX < bounds.left) {
-            x = 0;
-        } else if (e.clientX >= bounds.right) {
-            x = bounds.width - 1;
-        } else {
-            x = e.clientX - bounds.left;
-        }
-        if (e.clientY < bounds.top) {
-            y = 0;
-        } else if (e.clientY >= bounds.bottom) {
-            y = bounds.height - 1;
-        } else {
-            y = e.clientY - bounds.top;
-        }
-        this._pos = {x: x, y: y};
-    }
-
-    // ===== PUBLIC METHODS =====
-
-    grab() {
-        const t = this._target;
-        t.addEventListener('mousedown', this._eventHandlers.mousedown);
-        t.addEventListener('mouseup', this._eventHandlers.mouseup);
-        t.addEventListener('mousemove', this._eventHandlers.mousemove);
-
-        // Prevent middle-click pasting (see above for why we bind to document)
-        document.addEventListener('click', this._eventHandlers.mousedisable);
-
-        // preventDefault() on mousedown doesn't stop this event for some
-        // reason so we have to explicitly block it
-        t.addEventListener('contextmenu', this._eventHandlers.mousedisable);
-    }
-
-    ungrab() {
-        const t = this._target;
-
-        t.removeEventListener('mousedown', this._eventHandlers.mousedown);
-        t.removeEventListener('mouseup', this._eventHandlers.mouseup);
-        t.removeEventListener('mousemove', this._eventHandlers.mousemove);
-
-        document.removeEventListener('click', this._eventHandlers.mousedisable);
-
-        t.removeEventListener('contextmenu', this._eventHandlers.mousedisable);
-    }
-}