Added SDK
This commit is contained in:
Andrew Zambazos
@@ -0,0 +1,238 @@
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/*
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* Copyright (C) 2014 Antoine Quint
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WI.DragToAdjustController = class DragToAdjustController
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{
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constructor(delegate)
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{
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this._delegate = delegate;
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this._element = null;
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this._active = false;
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this._enabled = false;
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this._dragging = false;
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this._tracksMouseClickAndDrag = false;
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}
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// Public
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get element()
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{
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return this._element;
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}
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set element(element)
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{
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this._element = element;
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}
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get enabled()
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{
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return this._enabled;
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}
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set enabled(enabled)
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{
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if (this._enabled === enabled)
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return;
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if (enabled) {
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this._element.addEventListener("mouseenter", this);
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this._element.addEventListener("mouseleave", this);
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} else {
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this._element.removeEventListener("mouseenter", this);
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this._element.removeEventListener("mouseleave", this);
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}
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}
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get active()
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{
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return this._active;
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}
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set active(active)
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{
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if (!this._element)
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return;
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if (this._active === active)
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return;
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if (active) {
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WI.notifications.addEventListener(WI.Notification.GlobalModifierKeysDidChange, this._modifiersDidChange, this);
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this._element.addEventListener("mousemove", this);
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} else {
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WI.notifications.removeEventListener(WI.Notification.GlobalModifierKeysDidChange, this._modifiersDidChange, this);
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this._element.removeEventListener("mousemove", this);
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this._setTracksMouseClickAndDrag(false);
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}
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this._active = active;
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if (this._delegate && typeof this._delegate.dragToAdjustControllerActiveStateChanged === "function")
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this._delegate.dragToAdjustControllerActiveStateChanged(this);
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}
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reset()
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{
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this._setTracksMouseClickAndDrag(false);
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this._element.classList.remove(WI.DragToAdjustController.StyleClassName);
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if (this._delegate && typeof this._delegate.dragToAdjustControllerDidReset === "function")
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this._delegate.dragToAdjustControllerDidReset(this);
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}
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// Protected
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handleEvent(event)
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{
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switch (event.type) {
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case "mouseenter":
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if (!this._dragging) {
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if (this._delegate && typeof this._delegate.dragToAdjustControllerCanBeActivated === "function")
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this.active = this._delegate.dragToAdjustControllerCanBeActivated(this);
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else
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this.active = true;
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}
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break;
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case "mouseleave":
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if (!this._dragging)
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this.active = false;
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break;
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case "mousemove":
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if (this._dragging)
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this._mouseWasDragged(event);
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else
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this._mouseMoved(event);
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break;
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case "mousedown":
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this._mouseWasPressed(event);
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break;
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case "mouseup":
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this._mouseWasReleased(event);
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break;
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case "contextmenu":
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event.preventDefault();
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break;
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}
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}
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// Private
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_setDragging(dragging)
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{
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if (this._dragging === dragging)
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return;
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console.assert(window.event);
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if (dragging)
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WI.elementDragStart(this._element, this, this, window.event, "col-resize", window);
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else
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WI.elementDragEnd(window.event);
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this._dragging = dragging;
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}
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_setTracksMouseClickAndDrag(tracksMouseClickAndDrag)
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{
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if (this._tracksMouseClickAndDrag === tracksMouseClickAndDrag)
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return;
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if (tracksMouseClickAndDrag) {
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this._element.classList.add(WI.DragToAdjustController.StyleClassName);
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window.addEventListener("mousedown", this, true);
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window.addEventListener("contextmenu", this, true);
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} else {
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this._element.classList.remove(WI.DragToAdjustController.StyleClassName);
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window.removeEventListener("mousedown", this, true);
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window.removeEventListener("contextmenu", this, true);
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this._setDragging(false);
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}
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this._tracksMouseClickAndDrag = tracksMouseClickAndDrag;
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}
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_modifiersDidChange(event)
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{
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var canBeAdjusted = WI.modifierKeys.altKey;
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if (canBeAdjusted && this._delegate && typeof this._delegate.dragToAdjustControllerCanBeAdjusted === "function")
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canBeAdjusted = this._delegate.dragToAdjustControllerCanBeAdjusted(this);
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this._setTracksMouseClickAndDrag(canBeAdjusted);
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}
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_mouseMoved(event)
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{
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var canBeAdjusted = event.altKey;
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if (canBeAdjusted && this._delegate && typeof this._delegate.dragToAdjustControllerCanAdjustObjectAtPoint === "function")
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canBeAdjusted = this._delegate.dragToAdjustControllerCanAdjustObjectAtPoint(this, WI.Point.fromEvent(event));
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this._setTracksMouseClickAndDrag(canBeAdjusted);
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}
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_mouseWasPressed(event)
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{
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this._lastX = event.screenX;
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this._setDragging(true);
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event.preventDefault();
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event.stopPropagation();
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}
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_mouseWasDragged(event)
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{
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var x = event.screenX;
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var amount = x - this._lastX;
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if (Math.abs(amount) < 1)
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return;
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this._lastX = x;
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if (event.ctrlKey)
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amount /= 10;
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else if (event.shiftKey)
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amount *= 10;
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if (this._delegate && typeof this._delegate.dragToAdjustControllerWasAdjustedByAmount === "function")
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this._delegate.dragToAdjustControllerWasAdjustedByAmount(this, amount);
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event.preventDefault();
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event.stopPropagation();
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}
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_mouseWasReleased(event)
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{
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this._setDragging(false);
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event.preventDefault();
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event.stopPropagation();
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this.reset();
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}
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};
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WI.DragToAdjustController.StyleClassName = "drag-to-adjust";
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