DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/* rendering objects for replaced elements implemented by a plugin */

#ifndef nsObjectFrame_h___
#define nsObjectFrame_h___

#ifdef XP_WIN
#include <windows.h>
#endif

#include "nsIObjectFrame.h"
#include "nsFrame.h"

#ifdef ACCESSIBILITY
class nsIAccessible;
#endif

class nsPluginInstanceOwner;
class nsIPluginHost;
class nsIPluginInstance;
class nsPresContext;

#define nsObjectFrameSuper nsFrame

class nsObjectFrame : public nsObjectFrameSuper, public nsIObjectFrame {
public:
  friend nsIFrame* NS_NewObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

  // nsISupports 
  NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);

  NS_IMETHOD Init(nsIContent* aContent,
                  nsIFrame* aParent,
                  nsIFrame* aPrevInFlow);
  virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
  virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
  NS_IMETHOD Reflow(nsPresContext* aPresContext,
                    nsHTMLReflowMetrics& aDesiredSize,
                    const nsHTMLReflowState& aReflowState,
                    nsReflowStatus& aStatus);
  NS_IMETHOD DidReflow(nsPresContext* aPresContext,
                       const nsHTMLReflowState* aReflowState,
                       nsDidReflowStatus aStatus);
  NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                              const nsRect&           aDirtyRect,
                              const nsDisplayListSet& aLists);

  NS_IMETHOD  HandleEvent(nsPresContext* aPresContext,
                          nsGUIEvent* aEvent,
                          nsEventStatus* aEventStatus);

  virtual nsIAtom* GetType() const;

  virtual PRBool IsFrameOfType(PRUint32 aFlags) const
  {
    return nsObjectFrameSuper::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
  }

  virtual PRBool SupportsVisibilityHidden() { return PR_FALSE; }
  virtual PRBool NeedsView() { return PR_TRUE; }
  virtual nsresult CreateWidgetForView(nsIView* aView);

#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif

  virtual void Destroy();

  virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);

  NS_IMETHOD GetPluginInstance(nsIPluginInstance*& aPluginInstance);
  virtual nsresult Instantiate(nsIChannel* aChannel, nsIStreamListener** aStreamListener);
  virtual nsresult Instantiate(const char* aMimeType, nsIURI* aURI);
  virtual void TryNotifyContentObjectWrapper();
  virtual void StopPlugin();

  /*
   * Stop a plugin instance. If aDelayedStop is true, the plugin will
   * be stopped at a later point when it's safe to do so (i.e. not
   * while destroying the frame tree). Delayed stopping is only
   * implemented on Win32 for now.
   */
  void StopPluginInternal(PRBool aDelayedStop);

  /* fail on any requests to get a cursor from us because plugins set their own! see bug 118877 */
  NS_IMETHOD GetCursor(const nsPoint& aPoint, nsIFrame::Cursor& aCursor) 
  {
    return NS_ERROR_NOT_IMPLEMENTED;
  }

  // accessibility support
#ifdef ACCESSIBILITY
  NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
#ifdef XP_WIN
  NS_IMETHOD GetPluginPort(HWND *aPort);
#endif
#endif

  //local methods
  nsresult CreateWidget(nscoord aWidth, nscoord aHeight, PRBool aViewOnly);

  // for a given aRoot, this walks the frame tree looking for the next outFrame
  static nsIObjectFrame* GetNextObjectFrame(nsPresContext* aPresContext,
                                            nsIFrame* aRoot);

protected:
  // nsISupports
  NS_IMETHOD_(nsrefcnt) AddRef(void);
  NS_IMETHOD_(nsrefcnt) Release(void);

  nsObjectFrame(nsStyleContext* aContext);
  virtual ~nsObjectFrame();

  // NOTE:  This frame class does not inherit from |nsLeafFrame|, so
  // this is not a virtual method implementation.
  void GetDesiredSize(nsPresContext* aPresContext,
                      const nsHTMLReflowState& aReflowState,
                      nsHTMLReflowMetrics& aDesiredSize);

  nsresult InstantiatePlugin(nsIPluginHost* aPluginHost, 
                             const char* aMimetype,
                             nsIURI* aURL);

  /**
   * Adjust the plugin's idea of its size, using aSize as its new size.
   * (aSize must be in twips)
   */
  void FixupWindow(const nsSize& aSize);

  /**
   * Sets up the plugin window and calls SetWindow on the plugin.
   */
  void CallSetWindow();

  PRBool IsFocusable(PRInt32 *aTabIndex = nsnull, PRBool aWithMouse = PR_FALSE);

  // check attributes and optionally CSS to see if we should display anything
  PRBool IsHidden(PRBool aCheckVisibilityStyle = PR_TRUE) const;

  void NotifyContentObjectWrapper();

  nsPoint GetWindowOriginInPixels(PRBool aWindowless);

  static void PaintPrintPlugin(nsIFrame* aFrame,
                               nsIRenderingContext* aRenderingContext,
                               const nsRect& aDirtyRect, nsPoint aPt);
  static void PaintPlugin(nsIFrame* aFrame,
                               nsIRenderingContext* aRenderingContext,
                               const nsRect& aDirtyRect, nsPoint aPt);
  void PrintPlugin(nsIRenderingContext& aRenderingContext,
                   const nsRect& aDirtyRect);
  void PaintPlugin(nsIRenderingContext& aRenderingContext,
                   const nsRect& aDirtyRect, const nsPoint& aFramePt);

  /**
   * Makes sure that mInstanceOwner is valid and without a current plugin
   * instance. Essentially, this prepares the frame to receive a new plugin.
   */
  NS_HIDDEN_(nsresult) PrepareInstanceOwner();

  friend class nsPluginInstanceOwner;
private:
  nsRefPtr<nsPluginInstanceOwner> mInstanceOwner;
  nsRect                mWindowlessRect;

  // For assertions that make it easier to determine if a crash is due
  // to the underlying problem described in bug 136927, and to prevent
  // reentry into instantiation.
  PRBool mPreventInstantiation;
};


#endif /* nsObjectFrame_h___ */