diff -r 000000000000 -r 6474c204b198 content/base/public/nsIFrameLoader.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/public/nsIFrameLoader.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,314 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsFrameLoader;
+interface nsIDocShell;
+interface nsIURI;
+interface nsIFrame;
+interface nsSubDocumentFrame;
+interface nsIMessageSender;
+interface nsIVariant;
+interface nsIDOMElement;
+interface nsITabParent;
+interface nsILoadContext;
+
+typedef unsigned long long nsContentViewId;
+
+/**
+ * These interfaces do *not* scroll or scale the content document;
+ * instead they set a "goal" scroll/scale wrt the current content
+ * view.  When the content document is painted, the scroll*
+ * attributes are used to set a compensating transform.  If the
+ * metrics of the content document's current pixels don't match the
+ * view config, the transform matrix may need to translate
+ * content pixels and/or perform a "fuzzy-scale" that doesn't
+ * re-rasterize fonts or intelligently resample images.
+ *
+ * The attrs are allowed to transform content pixels in
+ * such a way that the <browser>'s visible rect encloses pixels that
+ * the content document does not (yet) define.
+ *
+ * The view scroll values are in units of chrome-document CSS
+ * pixels.
+ *
+ * These APIs are designed to be used with nsIDOMWindowUtils
+ * setDisplayPort() and setResolution().
+ */
+[scriptable, uuid(c04c5c40-fa2a-4e9c-94f5-b362a10a86cb)]
+interface nsIContentView : nsISupports
+{
+  /**
+   * Scroll view to or by the given chrome-document CSS pixels.
+   * Fails if the view is no longer valid.
+   */
+  void scrollTo(in float xPx, in float yPx);
+  void scrollBy(in float dxPx, in float dyPx);
+
+  void setScale(in float xScale, in float yScale);
+
+  /**
+   * Scroll offset in chrome-document CSS pixels.
+   *
+   * When this view is active (i.e. it is being painted because it's in the
+   * visible region of the screen), this value is at first lined up with the
+   * content's scroll offset.
+   *
+   * Note that when this view becomes inactive, the new content view will have
+   * scroll values that are reset to the default!
+   */
+  readonly attribute float scrollX;
+  readonly attribute float scrollY;
+
+  /**
+   * Dimensions of the viewport in chrome-document CSS pixels.
+   */
+  readonly attribute float viewportWidth;
+  readonly attribute float viewportHeight;
+
+  /**
+   * Dimensions of scrolled content in chrome-document CSS pixels.
+   */
+  readonly attribute float contentWidth;
+  readonly attribute float contentHeight;
+
+  /**
+   * ID that can be used in conjunction with nsIDOMWindowUtils to change
+   * the actual document, instead of just how it is transformed.
+   */
+  readonly attribute nsContentViewId id;
+};
+
+[scriptable, uuid(ba5af90d-ece5-40b2-9a1d-a0154128db1c)]
+interface nsIContentViewManager : nsISupports
+{
+  /**
+   * Retrieve view scrolling/scaling interfaces in a given area,
+   * used to support asynchronous re-paints of content pixels.
+   * These interfaces are only meaningful for <browser>.
+   *
+   * Pixels are in chrome device pixels and are relative to the browser
+   * element.
+   *
+   * @param aX x coordinate that will be in target rectangle
+   * @param aY y coordinate that will be in target rectangle
+   * @param aTopSize How much to expand up the rectangle
+   * @param aRightSize How much to expand right the rectangle
+   * @param aBottomSize How much to expand down the rectangle
+   * @param aLeftSize How much to expand left the rectangle
+   */
+  void getContentViewsIn(in float aXPx, in float aYPx,
+                         in float aTopSize, in float aRightSize,
+                         in float aBottomSize, in float aLeftSize,
+                         [optional] out unsigned long aLength,
+                         [retval, array, size_is(aLength)] out nsIContentView aResult);
+
+  /**
+   * The root content view.
+   */
+  readonly attribute nsIContentView rootContentView;
+};
+
+[scriptable, builtinclass, uuid(a5cefcc8-551b-4901-83f3-7436b09ecaba)]
+interface nsIFrameLoader : nsISupports
+{
+  /**
+   * Get the docshell from the frame loader.
+   */
+  readonly attribute nsIDocShell docShell;
+
+  /**
+   * Get this frame loader's TabParent, if it has a remote frame.  Otherwise,
+   * returns null.
+   */
+  readonly attribute nsITabParent tabParent;
+
+  /**
+   * Get an nsILoadContext for the top-level docshell. For remote
+   * frames, a shim is returned that contains private browsing and app
+   * information.
+   */
+  readonly attribute nsILoadContext loadContext;
+
+  /**
+   * Start loading the frame. This method figures out what to load
+   * from the owner content in the frame loader.
+   */
+  void loadFrame();
+
+  /**
+   * Loads the specified URI in this frame. Behaves identically to loadFrame,
+   * except that this method allows specifying the URI to load.
+   */
+  void loadURI(in nsIURI aURI);
+
+  /**
+   * Destroy the frame loader and everything inside it. This will
+   * clear the weak owner content reference.
+   */
+  void destroy();
+
+  /**
+   * Find out whether the loader's frame is at too great a depth in
+   * the frame tree.  This can be used to decide what operations may
+   * or may not be allowed on the loader's docshell.
+   */
+  readonly attribute boolean depthTooGreat;
+
+  /**
+   * Updates the position and size of the subdocument loaded by this frameloader.
+   *
+   *  @param aIFrame The nsIFrame for the content node that owns this frameloader
+   */
+  [noscript] void updatePositionAndSize(in nsSubDocumentFrame aIFrame);
+
+  /**
+   * Activate remote frame.
+   * Throws an exception with non-remote frames.
+   */
+  void activateRemoteFrame();
+
+  /**
+   * Deactivate remote frame.
+   * Throws an exception with non-remote frames.
+   */
+  void deactivateRemoteFrame();
+
+  /**
+   * @see nsIDOMWindowUtils sendMouseEvent.
+   */
+  void sendCrossProcessMouseEvent(in AString aType,
+                                  in float aX,
+                                  in float aY,
+                                  in long aButton,
+                                  in long aClickCount,
+                                  in long aModifiers,
+                                  [optional] in boolean aIgnoreRootScrollFrame);
+
+  /**
+   * Activate event forwarding from client (remote frame) to parent.
+   */
+  void activateFrameEvent(in AString aType, in boolean capture);
+
+  // Note, when frameloaders are swapped, also messageManagers are swapped.
+  readonly attribute nsIMessageSender messageManager;
+
+  /**
+   * @see nsIDOMWindowUtils sendKeyEvent.
+   */
+  void sendCrossProcessKeyEvent(in AString aType,
+                                in long aKeyCode,
+                                in long aCharCode,
+                                in long aModifiers,
+                                [optional] in boolean aPreventDefault);
+
+  /** 
+   * The default rendering mode is synchronous scrolling.  In this
+   * mode, it's an error to try to set a target viewport.
+   */
+  const unsigned long RENDER_MODE_DEFAULT        = 0x00000000;
+
+  /**
+   * When asynchronous scrolling is enabled, a target viewport can be
+   * set to transform content pixels wrt its CSS viewport.
+   *
+   * NB: when async scrolling is enabled, it's the *user's*
+   * responsibility to update the target scroll offset.  In effect,
+   * the platform hands over control of scroll offset to the user.
+   */
+  const unsigned long RENDER_MODE_ASYNC_SCROLL   = 0x00000001;
+
+  attribute unsigned long renderMode;
+
+  /**
+   * The default event mode automatically forwards the events
+   * handled in EventStateManager::HandleCrossProcessEvent to
+   * the child content process when these events are targeted to
+   * the remote browser element.
+   *
+   * Used primarly for input events (mouse, keyboard)
+   */
+  const unsigned long EVENT_MODE_NORMAL_DISPATCH = 0x00000000;
+
+  /**
+   * With this event mode, it's the application's responsability to 
+   * convert and forward events to the content process
+   */
+  const unsigned long EVENT_MODE_DONT_FORWARD_TO_CHILD = 0x00000001;
+
+  attribute unsigned long eventMode;
+
+  /**
+   * If false, then the subdocument is not clipped to its CSS viewport, and the
+   * subdocument's viewport scrollbar(s) are not rendered.
+   * Defaults to true.
+   */
+  attribute boolean clipSubdocument;
+
+  /**
+   * If false, then the subdocument's scroll coordinates will not be clamped
+   * to their scroll boundaries.
+   * Defaults to true.
+   */
+  attribute boolean clampScrollPosition;
+
+  /**
+   * The element which owns this frame loader.
+   *
+   * For example, if this is a frame loader for an <iframe>, this attribute
+   * returns the iframe element.
+   */
+  readonly attribute nsIDOMElement ownerElement;
+
+
+  /**
+   * Cached childID of the ContentParent owning the TabParent in this frame
+   * loader. This can be used to obtain the childID after the TabParent died.
+   */
+  readonly attribute unsigned long long childID;
+
+  /**
+   * Get or set this frame loader's visibility.
+   *
+   * The notion of "visibility" here is separate from the notion of a
+   * window/docshell's visibility.  This field is mostly here so that we can
+   * have a notion of visibility in the parent process when frames are OOP.
+   */
+  [infallible] attribute boolean visible;
+
+  /**
+   * Find out whether the owner content really is a browser or app frame
+   */
+  readonly attribute boolean ownerIsBrowserOrAppFrame;
+};
+
+%{C++
+class nsFrameLoader;
+%}
+
+native alreadyAddRefed_nsFrameLoader(already_AddRefed<nsFrameLoader>);
+
+[scriptable, uuid(5879040e-83e9-40e3-b2bb-5ddf43b76e47)]
+interface nsIFrameLoaderOwner : nsISupports
+{
+  /**
+   * The frame loader owned by this nsIFrameLoaderOwner
+   */
+  readonly attribute nsIFrameLoader frameLoader;
+  [noscript, notxpcom] alreadyAddRefed_nsFrameLoader GetFrameLoader();
+
+  /**
+   * Swap frame loaders with the given nsIFrameLoaderOwner.  This may
+   * only be posible in a very limited range of circumstances, or
+   * never, depending on the object implementing this interface.
+   *
+   * @throws NS_ERROR_NOT_IMPLEMENTED if the swapping logic is not
+   *   implemented for the two given frame loader owners.
+   * @throws NS_ERROR_DOM_SECURITY_ERR if the swap is not allowed on
+   *   security grounds.
+   */
+  void swapFrameLoaders(in nsIFrameLoaderOwner aOtherOwner);
+};