Method _handleMouse

systemvm/agent/noVNC/core/rfb.js:1240–1327

(ev)

    }

    _handleMouse(ev) {
        /*
         * We don't check connection status or viewOnly here as the
         * mouse events might be used to control the viewport
         */

        if (ev.type === 'click') {
            /*
             * 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 (ev.target !== this._canvas) {
                return;
            }
        }

        // FIXME: if we're in view-only and not dragging,
        //        should we stop events?
        ev.stopPropagation();
        ev.preventDefault();

        if ((ev.type === 'click') || (ev.type === 'contextmenu')) {
            return;
        }

        let pos = clientToElement(ev.clientX, ev.clientY,
                                  this._canvas);

        let bmask = RFB._convertButtonMask(ev.buttons);

        let down = ev.type == 'mousedown';
        switch (ev.type) {
            case 'mousedown':
            case 'mouseup':
                if (this.dragViewport) {
                    if (down && !this._viewportDragging) {
                        this._viewportDragging = true;
                        this._viewportDragPos = {'x': pos.x, 'y': pos.y};
                        this._viewportHasMoved = false;

                        this._flushMouseMoveTimer(pos.x, pos.y);

                        // Skip sending mouse events, instead save the current
                        // mouse mask so we can send it later.
                        this._mouseButtonMask = bmask;
                        break;
                    } else {
                        this._viewportDragging = false;

                        // If we actually performed a drag then we are done
                        // here and should not send any mouse events
                        if (this._viewportHasMoved) {
                            this._mouseButtonMask = bmask;
                            break;
                        }
                        // Otherwise we treat this as a mouse click event.
                        // Send the previously saved button mask, followed