webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 238 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Controllers/DragToAdjustController.js b/Source/WebInspectorUI/UserInterface/Controllers/DragToAdjustController.js
new file mode 100644
index 000000000..4ad3a2ab3
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Controllers/DragToAdjustController.js
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2014 Antoine Quint
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.DragToAdjustController = class DragToAdjustController
+{
+    constructor(delegate)
+    {
+        this._delegate = delegate;
+
+        this._element = null;
+        this._active = false;
+        this._enabled = false;
+        this._dragging = false;
+        this._tracksMouseClickAndDrag = false;
+    }
+
+    // Public
+
+    get element()
+    {
+        return this._element;
+    }
+
+    set element(element)
+    {
+        this._element = element;
+    }
+
+    get enabled()
+    {
+        return this._enabled;
+    }
+
+    set enabled(enabled)
+    {
+        if (this._enabled === enabled)
+            return;
+
+        if (enabled) {
+            this._element.addEventListener("mouseenter", this);
+            this._element.addEventListener("mouseleave", this);
+        } else {
+            this._element.removeEventListener("mouseenter", this);
+            this._element.removeEventListener("mouseleave", this);
+        }
+    }
+
+    get active()
+    {
+        return this._active;
+    }
+
+    set active(active)
+    {
+        if (!this._element)
+            return;
+
+        if (this._active === active)
+            return;
+
+        if (active) {
+            WebInspector.notifications.addEventListener(WebInspector.Notification.GlobalModifierKeysDidChange, this._modifiersDidChange, this);
+            this._element.addEventListener("mousemove", this);
+        } else {
+            WebInspector.notifications.removeEventListener(WebInspector.Notification.GlobalModifierKeysDidChange, this._modifiersDidChange, this);
+            this._element.removeEventListener("mousemove", this);
+            this._setTracksMouseClickAndDrag(false);
+        }
+
+        this._active = active;
+
+        if (this._delegate && typeof this._delegate.dragToAdjustControllerActiveStateChanged === "function")
+            this._delegate.dragToAdjustControllerActiveStateChanged(this);
+    }
+
+    reset()
+    {
+        this._setTracksMouseClickAndDrag(false);
+        this._element.classList.remove(WebInspector.DragToAdjustController.StyleClassName);
+
+        if (this._delegate && typeof this._delegate.dragToAdjustControllerDidReset === "function")
+            this._delegate.dragToAdjustControllerDidReset(this);
+    }
+
+    // Protected
+
+    handleEvent(event)
+    {
+        switch (event.type) {
+        case "mouseenter":
+            if (!this._dragging) {
+                if (this._delegate && typeof this._delegate.dragToAdjustControllerCanBeActivated === "function")
+                    this.active = this._delegate.dragToAdjustControllerCanBeActivated(this);
+                else
+                    this.active = true;
+            }
+            break;
+        case "mouseleave":
+            if (!this._dragging)
+                this.active = false;
+            break;
+        case "mousemove":
+            if (this._dragging)
+                this._mouseWasDragged(event);
+            else
+                this._mouseMoved(event);
+            break;
+        case "mousedown":
+            this._mouseWasPressed(event);
+            break;
+        case "mouseup":
+            this._mouseWasReleased(event);
+            break;
+        case "contextmenu":
+            event.preventDefault();
+            break;
+        }
+    }
+
+    // Private
+
+    _setDragging(dragging)
+    {
+        if (this._dragging === dragging)
+            return;
+
+        console.assert(window.event);
+        if (dragging)
+            WebInspector.elementDragStart(this._element, this, this, window.event, "col-resize", window);
+        else
+            WebInspector.elementDragEnd(window.event);
+
+        this._dragging = dragging;
+    }
+
+    _setTracksMouseClickAndDrag(tracksMouseClickAndDrag)
+    {
+        if (this._tracksMouseClickAndDrag === tracksMouseClickAndDrag)
+            return;
+
+        if (tracksMouseClickAndDrag) {
+            this._element.classList.add(WebInspector.DragToAdjustController.StyleClassName);
+            window.addEventListener("mousedown", this, true);
+            window.addEventListener("contextmenu", this, true);
+        } else {
+            this._element.classList.remove(WebInspector.DragToAdjustController.StyleClassName);
+            window.removeEventListener("mousedown", this, true);
+            window.removeEventListener("contextmenu", this, true);
+            this._setDragging(false);
+        }
+
+        this._tracksMouseClickAndDrag = tracksMouseClickAndDrag;
+    }
+
+    _modifiersDidChange(event)
+    {
+        var canBeAdjusted = WebInspector.modifierKeys.altKey;
+        if (canBeAdjusted && this._delegate && typeof this._delegate.dragToAdjustControllerCanBeAdjusted === "function")
+            canBeAdjusted = this._delegate.dragToAdjustControllerCanBeAdjusted(this);
+
+        this._setTracksMouseClickAndDrag(canBeAdjusted);
+    }
+
+    _mouseMoved(event)
+    {
+        var canBeAdjusted = event.altKey;
+        if (canBeAdjusted && this._delegate && typeof this._delegate.dragToAdjustControllerCanAdjustObjectAtPoint === "function")
+            canBeAdjusted = this._delegate.dragToAdjustControllerCanAdjustObjectAtPoint(this, WebInspector.Point.fromEvent(event));
+
+        this._setTracksMouseClickAndDrag(canBeAdjusted);
+    }
+
+    _mouseWasPressed(event)
+    {
+        this._lastX = event.screenX;
+
+        this._setDragging(true);
+
+        event.preventDefault();
+        event.stopPropagation();
+    }
+
+    _mouseWasDragged(event)
+    {
+        var x = event.screenX;
+        var amount = x - this._lastX;
+
+        if (Math.abs(amount) < 1)
+            return;
+
+        this._lastX = x;
+
+        if (event.ctrlKey)
+            amount /= 10;
+        else if (event.shiftKey)
+            amount *= 10;
+
+        if (this._delegate && typeof this._delegate.dragToAdjustControllerWasAdjustedByAmount === "function")
+            this._delegate.dragToAdjustControllerWasAdjustedByAmount(this, amount);
+
+        event.preventDefault();
+        event.stopPropagation();
+    }
+
+    _mouseWasReleased(event)
+    {
+        this._setDragging(false);
+
+        event.preventDefault();
+        event.stopPropagation();
+
+        this.reset();
+    }
+};
+
+WebInspector.DragToAdjustController.StyleClassName = "drag-to-adjust";