/usr/include/thunderbird/mozilla/BrowserElementParent.h is in thunderbird-dev 1:38.6.0+build1-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* 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/. */
#ifndef mozilla_BrowserElementHelpers_h
#define mozilla_BrowserElementHelpers_h
#include "nsAString.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/gfx/Rect.h"
#include "Units.h"
#include "mozilla/dom/Element.h"
class nsIDOMWindow;
class nsIURI;
namespace mozilla {
namespace dom {
class TabParent;
}
/**
* BrowserElementParent implements a portion of the parent-process side of
* <iframe mozbrowser>.
*
* Most of the parent-process side of <iframe mozbrowser> is implemented in
* BrowserElementParent.js. This file implements the few parts of this
* functionality which must be written in C++.
*
* We don't communicate with the JS code that lives in BrowserElementParent.js;
* the JS and C++ parts are completely separate.
*/
class BrowserElementParent
{
public:
/**
* Possible results from a window.open call.
* ADDED - The frame was added to a document (i.e. handled by the embedder).
* IGNORED - The frame was not added to a document and the embedder didn't
* call preventDefault() to prevent the platform from handling the call.
* CANCELLED - The frame was not added to a document, but the embedder still
* called preventDefault() to prevent the platform from handling the call.
*/
enum OpenWindowResult {
OPEN_WINDOW_ADDED,
OPEN_WINDOW_IGNORED,
OPEN_WINDOW_CANCELLED
};
/**
* Handle a window.open call from an out-of-process <iframe mozbrowser>.
*
* window.open inside <iframe mozbrowser> doesn't actually open a new
* top-level window. Instead, the "embedder" (the document which contains
* the <iframe mozbrowser> whose content called window.open) gets the
* opportunity to place a new <iframe mozbrowser> in the DOM somewhere. This
* new "popup" iframe acts as the opened window.
*
* This method proceeds in three steps.
*
* 1) We fire a mozbrowseropenwindow CustomEvent on the opener
* iframe element. This event's detail is an instance of
* OpenWindowEventDetail.
*
* 2) The embedder (the document which contains the opener iframe) can accept
* the window.open request by inserting event.detail.frameElement (an iframe
* element) into the DOM somewhere.
*
* 3) If the embedder accepted the window.open request, we return true and
* set aPopupTabParent's frame element to event.detail.frameElement.
* Otherwise, we return false.
*
* @param aURL the URL the new window should load. The empty string is
* allowed.
* @param aOpenerTabParent the TabParent whose TabChild called window.open.
* @param aPopupTabParent the TabParent inside which the opened window will
* live.
* @return an OpenWindowresult that describes whether the embedder added the
* frame to a document and whether it called preventDefault to prevent
* the platform from handling the open request.
*/
static OpenWindowResult
OpenWindowOOP(dom::TabParent* aOpenerTabParent,
dom::TabParent* aPopupTabParent,
const nsAString& aURL,
const nsAString& aName,
const nsAString& aFeatures);
/**
* Handle a window.open call from an in-process <iframe mozbrowser>.
*
* (These parameter types are silly, but they match what our caller has in
* hand. Feel free to add an override, if they are inconvenient to you.)
*
* @param aURI the URI the new window should load. May be null.
* @return an OpenWindowResult that describes whether the browser added the
* frame to a document or whether they called preventDefault to prevent
* the platform from handling the open request
*/
static OpenWindowResult
OpenWindowInProcess(nsIDOMWindow* aOpenerWindow,
nsIURI* aURI,
const nsAString& aName,
const nsACString& aFeatures,
nsIDOMWindow** aReturnWindow);
/**
* Fire a mozbrowserasyncscroll CustomEvent on the given TabParent's frame element.
* This event's detail is an AsyncScrollEventDetail dictionary.
*
* @param aContentRect: The portion of the page which is currently visible
* onscreen in CSS pixels.
*
* @param aContentSize: The content width/height in CSS pixels.
*
* aContentRect.top + aContentRect.height may be larger than aContentSize.height.
* This indicates that the content is over-scrolled, which occurs when the
* page "rubber-bands" after being scrolled all the way to the bottom.
* Similarly, aContentRect.left + aContentRect.width may be greater than
* contentSize.width, and both left and top may be negative.
*/
static bool
DispatchAsyncScrollEvent(dom::TabParent* aTabParent,
const CSSRect& aContentRect,
const CSSSize& aContentSize);
private:
static OpenWindowResult
DispatchOpenWindowEvent(dom::Element* aOpenerFrameElement,
dom::Element* aPopupFrameElement,
const nsAString& aURL,
const nsAString& aName,
const nsAString& aFeatures);
};
} // namespace mozilla
#endif
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