LCOV - code coverage report
Current view: directory - editor/libeditor/html - nsHTMLAbsPosition.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 332 0 0.0 %
Date: 2012-06-02 Functions: 27 0 0.0 %

       1                 : /* ***** BEGIN LICENSE BLOCK *****
       2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       3                 :  *
       4                 :  * The contents of this file are subject to the Mozilla Public License Version
       5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       6                 :  * the License. You may obtain a copy of the License at
       7                 :  * http://www.mozilla.org/MPL/
       8                 :  *
       9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      11                 :  * for the specific language governing rights and limitations under the
      12                 :  * License.
      13                 :  *
      14                 :  * The Original Code is Mozilla.org.
      15                 :  *
      16                 :  * The Initial Developer of the Original Code is
      17                 :  * Netscape Communications Corp.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2003
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Daniel Glazman (glazman@netscape.com) (Original author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include <math.h>
      39                 : 
      40                 : #include "nsHTMLEditor.h"
      41                 : 
      42                 : #include "nsIContent.h"
      43                 : #include "nsIDocument.h"
      44                 : #include "nsIEditor.h"
      45                 : #include "nsIPresShell.h"
      46                 : 
      47                 : #include "nsISelection.h"
      48                 : 
      49                 : #include "nsTextEditUtils.h"
      50                 : #include "nsEditorUtils.h"
      51                 : #include "nsHTMLEditUtils.h"
      52                 : #include "nsTextEditRules.h"
      53                 : #include "nsHTMLEditRules.h"
      54                 : 
      55                 : #include "nsIDOMHTMLElement.h"
      56                 : #include "nsIDOMNodeList.h"
      57                 : 
      58                 : #include "nsIDOMEventTarget.h"
      59                 : 
      60                 : #include "nsIDOMCSSValue.h"
      61                 : #include "nsIDOMCSSPrimitiveValue.h"
      62                 : #include "nsIDOMRGBColor.h"
      63                 : 
      64                 : #include "mozilla/Preferences.h"
      65                 : #include "mozilla/dom/Element.h"
      66                 : 
      67                 : using namespace mozilla;
      68                 : 
      69                 : #define  BLACK_BG_RGB_TRIGGER 0xd0
      70                 : 
      71                 : NS_IMETHODIMP
      72               0 : nsHTMLEditor::AbsolutePositionSelection(bool aEnabled)
      73                 : {
      74               0 :   nsAutoEditBatch beginBatching(this);
      75                 :   nsAutoRules beginRulesSniffing(this,
      76                 :                                  aEnabled ? kOpSetAbsolutePosition :
      77                 :                                             kOpRemoveAbsolutePosition,
      78               0 :                                  nsIEditor::eNext);
      79                 :   
      80                 :   // the line below does not match the code; should it be removed?
      81                 :   // Find out if the selection is collapsed:
      82               0 :   nsCOMPtr<nsISelection> selection;
      83               0 :   nsresult res = GetSelection(getter_AddRefs(selection));
      84               0 :   NS_ENSURE_SUCCESS(res, res);
      85               0 :   NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
      86                 : 
      87                 :   nsTextRulesInfo ruleInfo(aEnabled ?
      88                 :                            nsTextEditRules::kSetAbsolutePosition :
      89               0 :                            nsTextEditRules::kRemoveAbsolutePosition);
      90                 :   bool cancel, handled;
      91               0 :   res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
      92               0 :   if (NS_FAILED(res) || cancel)
      93               0 :     return res;
      94                 :   
      95               0 :   return mRules->DidDoAction(selection, &ruleInfo, res);
      96                 : }
      97                 : 
      98                 : NS_IMETHODIMP
      99               0 : nsHTMLEditor::GetAbsolutelyPositionedSelectionContainer(nsIDOMElement **_retval)
     100                 : {
     101               0 :   nsCOMPtr<nsIDOMElement> element;
     102               0 :   nsresult res = GetSelectionContainer(getter_AddRefs(element));
     103               0 :   NS_ENSURE_SUCCESS(res, res);
     104                 : 
     105               0 :   nsAutoString positionStr;
     106               0 :   nsCOMPtr<nsIDOMNode> node = do_QueryInterface(element);
     107               0 :   nsCOMPtr<nsIDOMNode> resultNode;
     108                 : 
     109               0 :   while (!resultNode && node && !nsEditor::NodeIsType(node, nsEditProperty::html)) {
     110                 :     res = mHTMLCSSUtils->GetComputedProperty(node, nsEditProperty::cssPosition,
     111               0 :                                              positionStr);
     112               0 :     NS_ENSURE_SUCCESS(res, res);
     113               0 :     if (positionStr.EqualsLiteral("absolute"))
     114               0 :       resultNode = node;
     115                 :     else {
     116               0 :       nsCOMPtr<nsIDOMNode> parentNode;
     117               0 :       res = node->GetParentNode(getter_AddRefs(parentNode));
     118               0 :       NS_ENSURE_SUCCESS(res, res);
     119               0 :       node.swap(parentNode);
     120                 :     }
     121                 :   }
     122                 : 
     123               0 :   element = do_QueryInterface(resultNode ); 
     124               0 :   *_retval = element;
     125               0 :   NS_IF_ADDREF(*_retval);
     126               0 :   return NS_OK;
     127                 : }
     128                 : 
     129                 : NS_IMETHODIMP
     130               0 : nsHTMLEditor::GetSelectionContainerAbsolutelyPositioned(bool *aIsSelectionContainerAbsolutelyPositioned)
     131                 : {
     132               0 :   *aIsSelectionContainerAbsolutelyPositioned = (mAbsolutelyPositionedObject != nsnull);
     133               0 :   return NS_OK;
     134                 : }
     135                 : 
     136                 : NS_IMETHODIMP
     137               0 : nsHTMLEditor::GetAbsolutePositioningEnabled(bool * aIsEnabled)
     138                 : {
     139               0 :   *aIsEnabled = mIsAbsolutelyPositioningEnabled;
     140               0 :   return NS_OK;
     141                 : }
     142                 : 
     143                 : NS_IMETHODIMP
     144               0 : nsHTMLEditor::SetAbsolutePositioningEnabled(bool aIsEnabled)
     145                 : {
     146               0 :   mIsAbsolutelyPositioningEnabled = aIsEnabled;
     147               0 :   return NS_OK;
     148                 : }
     149                 : 
     150                 : NS_IMETHODIMP
     151               0 : nsHTMLEditor::RelativeChangeElementZIndex(nsIDOMElement * aElement,
     152                 :                                           PRInt32 aChange,
     153                 :                                           PRInt32 * aReturn)
     154                 : {
     155               0 :   NS_ENSURE_ARG_POINTER(aElement);
     156               0 :   NS_ENSURE_ARG_POINTER(aReturn);
     157               0 :   if (!aChange) // early way out, no change
     158               0 :     return NS_OK;
     159                 : 
     160                 :   PRInt32 zIndex;
     161               0 :   nsresult res = GetElementZIndex(aElement, &zIndex);
     162               0 :   NS_ENSURE_SUCCESS(res, res);
     163                 : 
     164               0 :   zIndex = NS_MAX(zIndex + aChange, 0);
     165               0 :   SetElementZIndex(aElement, zIndex);
     166               0 :   *aReturn = zIndex;
     167                 : 
     168               0 :   return NS_OK;
     169                 : }
     170                 : 
     171                 : NS_IMETHODIMP
     172               0 : nsHTMLEditor::SetElementZIndex(nsIDOMElement * aElement,
     173                 :                                PRInt32 aZindex)
     174                 : {
     175               0 :   NS_ENSURE_ARG_POINTER(aElement);
     176                 :   
     177               0 :   nsAutoString zIndexStr;
     178               0 :   zIndexStr.AppendInt(aZindex);
     179                 : 
     180                 :   mHTMLCSSUtils->SetCSSProperty(aElement,
     181                 :                                 nsEditProperty::cssZIndex,
     182                 :                                 zIndexStr,
     183               0 :                                 false);
     184               0 :   return NS_OK;
     185                 : }
     186                 : 
     187                 : NS_IMETHODIMP
     188               0 : nsHTMLEditor::RelativeChangeZIndex(PRInt32 aChange)
     189                 : {
     190               0 :   nsAutoEditBatch beginBatching(this);
     191                 :   nsAutoRules beginRulesSniffing(this,
     192                 :                                  (aChange < 0) ? kOpDecreaseZIndex :
     193                 :                                                  kOpIncreaseZIndex,
     194               0 :                                  nsIEditor::eNext);
     195                 :   
     196                 :   // brade: can we get rid of this comment?
     197                 :   // Find out if the selection is collapsed:
     198               0 :   nsCOMPtr<nsISelection> selection;
     199               0 :   nsresult res = GetSelection(getter_AddRefs(selection));
     200               0 :   NS_ENSURE_SUCCESS(res, res);
     201               0 :   NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
     202                 :   nsTextRulesInfo ruleInfo((aChange < 0) ? nsTextEditRules::kDecreaseZIndex:
     203               0 :                                            nsTextEditRules::kIncreaseZIndex);
     204                 :   bool cancel, handled;
     205               0 :   res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
     206               0 :   if (cancel || NS_FAILED(res))
     207               0 :     return res;
     208                 :   
     209               0 :   return mRules->DidDoAction(selection, &ruleInfo, res);
     210                 : }
     211                 : 
     212                 : NS_IMETHODIMP
     213               0 : nsHTMLEditor::GetElementZIndex(nsIDOMElement * aElement,
     214                 :                                PRInt32 * aZindex)
     215                 : {
     216               0 :   nsAutoString zIndexStr;
     217               0 :   *aZindex = 0;
     218                 : 
     219                 :   nsresult res = mHTMLCSSUtils->GetSpecifiedProperty(aElement,
     220                 :                                                      nsEditProperty::cssZIndex,
     221               0 :                                                      zIndexStr);
     222               0 :   NS_ENSURE_SUCCESS(res, res);
     223               0 :   if (zIndexStr.EqualsLiteral("auto")) {
     224                 :     // we have to look at the positioned ancestors
     225                 :     // cf. CSS 2 spec section 9.9.1
     226               0 :     nsCOMPtr<nsIDOMNode> parentNode;
     227               0 :     res = aElement->GetParentNode(getter_AddRefs(parentNode));
     228               0 :     NS_ENSURE_SUCCESS(res, res);
     229               0 :     nsCOMPtr<nsIDOMNode> node = parentNode;
     230               0 :     nsAutoString positionStr;
     231               0 :     while (node && 
     232               0 :            zIndexStr.EqualsLiteral("auto") &&
     233               0 :            !nsTextEditUtils::IsBody(node)) {
     234                 :       res = mHTMLCSSUtils->GetComputedProperty(node,
     235                 :                                                nsEditProperty::cssPosition,
     236               0 :                                                positionStr);
     237               0 :       NS_ENSURE_SUCCESS(res, res);
     238               0 :       if (positionStr.EqualsLiteral("absolute")) {
     239                 :         // ah, we found one, what's its z-index ? If its z-index is auto,
     240                 :         // we have to continue climbing the document's tree
     241                 :         res = mHTMLCSSUtils->GetComputedProperty(node,
     242                 :                                                  nsEditProperty::cssZIndex,
     243               0 :                                                  zIndexStr);
     244               0 :         NS_ENSURE_SUCCESS(res, res);
     245                 :       }
     246               0 :       res = node->GetParentNode(getter_AddRefs(parentNode));
     247               0 :       NS_ENSURE_SUCCESS(res, res);
     248               0 :       node = parentNode;
     249                 :     }
     250                 :   }
     251                 : 
     252               0 :   if (!zIndexStr.EqualsLiteral("auto")) {
     253                 :     PRInt32 errorCode;
     254               0 :     *aZindex = zIndexStr.ToInteger(&errorCode);
     255                 :   }
     256                 : 
     257               0 :   return NS_OK;
     258                 : }
     259                 : 
     260                 : nsresult
     261               0 : nsHTMLEditor::CreateGrabber(nsIDOMNode * aParentNode, nsIDOMElement ** aReturn)
     262                 : {
     263                 :   // let's create a grabber through the element factory
     264               0 :   nsresult res = CreateAnonymousElement(NS_LITERAL_STRING("span"),
     265                 :                                         aParentNode,
     266               0 :                                         NS_LITERAL_STRING("mozGrabber"),
     267                 :                                         false,
     268               0 :                                         aReturn);
     269                 : 
     270               0 :   NS_ENSURE_TRUE(*aReturn, NS_ERROR_FAILURE);
     271                 : 
     272                 :   // add the mouse listener so we can detect a click on a resizer
     273               0 :   nsCOMPtr<nsIDOMEventTarget> evtTarget(do_QueryInterface(*aReturn));
     274               0 :   evtTarget->AddEventListener(NS_LITERAL_STRING("mousedown"),
     275               0 :                               mEventListener, false);
     276                 : 
     277               0 :   return res;
     278                 : }
     279                 : 
     280                 : NS_IMETHODIMP
     281               0 : nsHTMLEditor::RefreshGrabber()
     282                 : {
     283               0 :   NS_ENSURE_TRUE(mAbsolutelyPositionedObject, NS_ERROR_NULL_POINTER);
     284                 : 
     285                 :   nsresult res = GetPositionAndDimensions(mAbsolutelyPositionedObject,
     286                 :                                          mPositionedObjectX,
     287                 :                                          mPositionedObjectY,
     288                 :                                          mPositionedObjectWidth,
     289                 :                                          mPositionedObjectHeight,
     290                 :                                          mPositionedObjectBorderLeft,
     291                 :                                          mPositionedObjectBorderTop,
     292                 :                                          mPositionedObjectMarginLeft,
     293               0 :                                          mPositionedObjectMarginTop);
     294                 : 
     295               0 :   NS_ENSURE_SUCCESS(res, res);
     296                 : 
     297                 :   SetAnonymousElementPosition(mPositionedObjectX+12,
     298                 :                               mPositionedObjectY-14,
     299               0 :                               mGrabber);
     300               0 :   return NS_OK;
     301                 : }
     302                 : 
     303                 : NS_IMETHODIMP
     304               0 : nsHTMLEditor::HideGrabber()
     305                 : {
     306                 :   nsresult res =
     307               0 :     mAbsolutelyPositionedObject->RemoveAttribute(NS_LITERAL_STRING("_moz_abspos"));
     308               0 :   NS_ENSURE_SUCCESS(res, res);
     309                 : 
     310               0 :   mAbsolutelyPositionedObject = nsnull;
     311               0 :   NS_ENSURE_TRUE(mGrabber, NS_ERROR_NULL_POINTER);
     312                 : 
     313                 :   // get the presshell's document observer interface.
     314               0 :   nsCOMPtr<nsIPresShell> ps = GetPresShell();
     315                 :   // We allow the pres shell to be null; when it is, we presume there
     316                 :   // are no document observers to notify, but we still want to
     317                 :   // UnbindFromTree.
     318                 : 
     319               0 :   nsCOMPtr<nsIDOMNode> parentNode;
     320               0 :   res = mGrabber->GetParentNode(getter_AddRefs(parentNode));
     321               0 :   NS_ENSURE_SUCCESS(res, res);
     322                 : 
     323               0 :   nsCOMPtr<nsIContent> parentContent = do_QueryInterface(parentNode);
     324               0 :   NS_ENSURE_TRUE(parentContent, NS_ERROR_NULL_POINTER);
     325                 : 
     326               0 :   DeleteRefToAnonymousNode(mGrabber, parentContent, ps);
     327               0 :   mGrabber = nsnull;
     328               0 :   DeleteRefToAnonymousNode(mPositioningShadow, parentContent, ps);
     329               0 :   mPositioningShadow = nsnull;
     330                 : 
     331               0 :   return NS_OK;
     332                 : }
     333                 : 
     334                 : NS_IMETHODIMP
     335               0 : nsHTMLEditor::ShowGrabberOnElement(nsIDOMElement * aElement)
     336                 : {
     337               0 :   NS_ENSURE_ARG_POINTER(aElement);
     338                 : 
     339               0 :   if (mGrabber) {
     340               0 :     NS_ERROR("call HideGrabber first");
     341               0 :     return NS_ERROR_UNEXPECTED;
     342                 :   }
     343                 : 
     344               0 :   nsAutoString classValue;
     345               0 :   nsresult res = CheckPositionedElementBGandFG(aElement, classValue);
     346               0 :   NS_ENSURE_SUCCESS(res, res);
     347                 : 
     348               0 :   res = aElement->SetAttribute(NS_LITERAL_STRING("_moz_abspos"),
     349               0 :                                classValue);
     350               0 :   NS_ENSURE_SUCCESS(res, res);
     351                 : 
     352                 :   // first, let's keep track of that element...
     353               0 :   mAbsolutelyPositionedObject = aElement;
     354                 : 
     355               0 :   nsCOMPtr<nsIDOMNode> parentNode;
     356               0 :   res = aElement->GetParentNode(getter_AddRefs(parentNode));
     357               0 :   NS_ENSURE_SUCCESS(res, res);
     358                 : 
     359               0 :   res = CreateGrabber(parentNode, getter_AddRefs(mGrabber));
     360               0 :   NS_ENSURE_SUCCESS(res, res);
     361                 : 
     362                 :   // and set its position
     363               0 :   return RefreshGrabber();
     364                 : }
     365                 : 
     366                 : nsresult
     367               0 : nsHTMLEditor::StartMoving(nsIDOMElement *aHandle)
     368                 : {
     369               0 :   nsCOMPtr<nsIDOMNode> parentNode;
     370               0 :   nsresult res = mGrabber->GetParentNode(getter_AddRefs(parentNode));
     371               0 :   NS_ENSURE_SUCCESS(res, res);
     372                 : 
     373                 :   // now, let's create the resizing shadow
     374               0 :   res = CreateShadow(getter_AddRefs(mPositioningShadow),
     375               0 :                                  parentNode, mAbsolutelyPositionedObject);
     376               0 :   NS_ENSURE_SUCCESS(res,res);
     377                 :   res = SetShadowPosition(mPositioningShadow, mAbsolutelyPositionedObject,
     378               0 :                              mPositionedObjectX, mPositionedObjectY);
     379               0 :   NS_ENSURE_SUCCESS(res,res);
     380                 : 
     381                 :   // make the shadow appear
     382               0 :   mPositioningShadow->RemoveAttribute(NS_LITERAL_STRING("class"));
     383                 : 
     384                 :   // position it
     385                 :   mHTMLCSSUtils->SetCSSPropertyPixels(mPositioningShadow,
     386               0 :                                       NS_LITERAL_STRING("width"),
     387               0 :                                       mPositionedObjectWidth);
     388                 :   mHTMLCSSUtils->SetCSSPropertyPixels(mPositioningShadow,
     389               0 :                                       NS_LITERAL_STRING("height"),
     390               0 :                                       mPositionedObjectHeight);
     391                 : 
     392               0 :   mIsMoving = true;
     393               0 :   return res;
     394                 : }
     395                 : 
     396                 : void
     397               0 : nsHTMLEditor::SnapToGrid(PRInt32 & newX, PRInt32 & newY)
     398                 : {
     399               0 :   if (mSnapToGridEnabled && mGridSize) {
     400               0 :     newX = (PRInt32) floor( ((float)newX / (float)mGridSize) + 0.5f ) * mGridSize;
     401               0 :     newY = (PRInt32) floor( ((float)newY / (float)mGridSize) + 0.5f ) * mGridSize;
     402                 :   }
     403               0 : }
     404                 : 
     405                 : nsresult
     406               0 : nsHTMLEditor::GrabberClicked()
     407                 : {
     408                 :   // add a mouse move listener to the editor
     409               0 :   nsresult res = NS_OK;
     410               0 :   if (!mMouseMotionListenerP) {
     411               0 :     mMouseMotionListenerP = new ResizerMouseMotionListener(this);
     412               0 :     if (!mMouseMotionListenerP) {return NS_ERROR_NULL_POINTER;}
     413                 : 
     414               0 :     nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
     415               0 :     NS_ENSURE_TRUE(piTarget, NS_ERROR_FAILURE);
     416                 : 
     417               0 :     res = piTarget->AddEventListener(NS_LITERAL_STRING("mousemove"),
     418                 :                                      mMouseMotionListenerP,
     419               0 :                                      false, false);
     420               0 :     NS_ASSERTION(NS_SUCCEEDED(res),
     421                 :                  "failed to register mouse motion listener");
     422                 :   }
     423               0 :   mGrabberClicked = true;
     424               0 :   return res;
     425                 : }
     426                 : 
     427                 : nsresult
     428               0 : nsHTMLEditor::EndMoving()
     429                 : {
     430               0 :   if (mPositioningShadow) {
     431               0 :     nsCOMPtr<nsIPresShell> ps = GetPresShell();
     432               0 :     NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
     433                 : 
     434               0 :     nsCOMPtr<nsIDOMNode> parentNode;
     435               0 :     nsresult res = mGrabber->GetParentNode(getter_AddRefs(parentNode));
     436               0 :     NS_ENSURE_SUCCESS(res, res);
     437                 : 
     438               0 :     nsCOMPtr<nsIContent> parentContent( do_QueryInterface(parentNode) );
     439               0 :     NS_ENSURE_TRUE(parentContent, NS_ERROR_FAILURE);
     440                 : 
     441               0 :     DeleteRefToAnonymousNode(mPositioningShadow, parentContent, ps);
     442                 : 
     443               0 :     mPositioningShadow = nsnull;
     444                 :   }
     445               0 :   nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
     446                 : 
     447               0 :   if (piTarget && mMouseMotionListenerP) {
     448                 : #ifdef DEBUG
     449                 :     nsresult res =
     450                 : #endif
     451               0 :     piTarget->RemoveEventListener(NS_LITERAL_STRING("mousemove"),
     452                 :                                   mMouseMotionListenerP,
     453               0 :                                   false);
     454               0 :     NS_ASSERTION(NS_SUCCEEDED(res), "failed to remove mouse motion listener");
     455                 :   }
     456               0 :   mMouseMotionListenerP = nsnull;
     457                 : 
     458               0 :   mGrabberClicked = false;
     459               0 :   mIsMoving = false;
     460               0 :   nsCOMPtr<nsISelection> selection;
     461               0 :   GetSelection(getter_AddRefs(selection));
     462               0 :   if (!selection) {
     463               0 :     return NS_ERROR_NOT_INITIALIZED;
     464                 :   }
     465               0 :   return CheckSelectionStateForAnonymousButtons(selection);
     466                 : }
     467                 : nsresult
     468               0 : nsHTMLEditor::SetFinalPosition(PRInt32 aX, PRInt32 aY)
     469                 : {
     470               0 :   nsresult res = EndMoving();
     471               0 :   NS_ENSURE_SUCCESS(res, res);
     472                 : 
     473                 :   // we have now to set the new width and height of the resized object
     474                 :   // we don't set the x and y position because we don't control that in
     475                 :   // a normal HTML layout
     476               0 :   PRInt32 newX = mPositionedObjectX + aX - mOriginalX - (mPositionedObjectBorderLeft+mPositionedObjectMarginLeft);
     477               0 :   PRInt32 newY = mPositionedObjectY + aY - mOriginalY - (mPositionedObjectBorderTop+mPositionedObjectMarginTop);
     478                 : 
     479               0 :   SnapToGrid(newX, newY);
     480                 : 
     481               0 :   nsAutoString x, y;
     482               0 :   x.AppendInt(newX);
     483               0 :   y.AppendInt(newY);
     484                 : 
     485                 :   // we want one transaction only from a user's point of view
     486               0 :   nsAutoEditBatch batchIt(this);
     487                 : 
     488                 :   mHTMLCSSUtils->SetCSSPropertyPixels(mAbsolutelyPositionedObject,
     489                 :                                       nsEditProperty::cssTop,
     490                 :                                       newY,
     491               0 :                                       false);
     492                 :   mHTMLCSSUtils->SetCSSPropertyPixels(mAbsolutelyPositionedObject,
     493                 :                                       nsEditProperty::cssLeft,
     494                 :                                       newX,
     495               0 :                                       false);
     496                 :   // keep track of that size
     497               0 :   mPositionedObjectX  = newX;
     498               0 :   mPositionedObjectY  = newY;
     499                 : 
     500               0 :   return RefreshResizers();
     501                 : }
     502                 : 
     503                 : void
     504               0 : nsHTMLEditor::AddPositioningOffset(PRInt32 & aX, PRInt32 & aY)
     505                 : {
     506                 :   // Get the positioning offset
     507                 :   PRInt32 positioningOffset =
     508               0 :     Preferences::GetInt("editor.positioning.offset", 0);
     509                 : 
     510               0 :   aX += positioningOffset;
     511               0 :   aY += positioningOffset;
     512               0 : }
     513                 : 
     514                 : NS_IMETHODIMP
     515               0 : nsHTMLEditor::AbsolutelyPositionElement(nsIDOMElement * aElement,
     516                 :                                         bool aEnabled)
     517                 : {
     518               0 :   NS_ENSURE_ARG_POINTER(aElement);
     519                 : 
     520               0 :   nsAutoString positionStr;
     521                 :   mHTMLCSSUtils->GetComputedProperty(aElement, nsEditProperty::cssPosition,
     522               0 :                                      positionStr);
     523               0 :   bool isPositioned = (positionStr.EqualsLiteral("absolute"));
     524                 : 
     525                 :   // nothing to do if the element is already in the state we want
     526               0 :   if (isPositioned == aEnabled)
     527               0 :     return NS_OK;
     528                 : 
     529               0 :   nsAutoEditBatch batchIt(this);
     530                 :   nsresult res;
     531                 : 
     532               0 :   if (aEnabled) {
     533                 :     PRInt32 x, y;
     534               0 :     GetElementOrigin(aElement, x, y);
     535                 : 
     536                 :     mHTMLCSSUtils->SetCSSProperty(aElement,
     537                 :                                   nsEditProperty::cssPosition,
     538               0 :                                   NS_LITERAL_STRING("absolute"),
     539               0 :                                   false);
     540                 : 
     541               0 :     AddPositioningOffset(x, y);
     542               0 :     SnapToGrid(x, y);
     543               0 :     SetElementPosition(aElement, x, y);
     544                 : 
     545                 :     // we may need to create a br if the positioned element is alone in its
     546                 :     // container
     547               0 :     nsCOMPtr<nsIDOMNode> parentNode;
     548               0 :     res = aElement->GetParentNode(getter_AddRefs(parentNode));
     549               0 :     NS_ENSURE_SUCCESS(res, res);
     550                 : 
     551               0 :     nsCOMPtr<nsIDOMNodeList> childNodes;
     552               0 :     res = parentNode->GetChildNodes(getter_AddRefs(childNodes));
     553               0 :     NS_ENSURE_SUCCESS(res, res);
     554               0 :     NS_ENSURE_TRUE(childNodes, NS_ERROR_NULL_POINTER);
     555                 :     PRUint32 childCount;
     556               0 :     res = childNodes->GetLength(&childCount);
     557               0 :     NS_ENSURE_SUCCESS(res, res);
     558                 : 
     559               0 :     if (childCount == 1) {
     560               0 :       nsCOMPtr<nsIDOMNode> brNode;
     561               0 :       res = CreateBR(parentNode, 0, address_of(brNode));
     562                 :     }
     563                 :   }
     564                 :   else {
     565               0 :     res = NS_OK;
     566                 :     mHTMLCSSUtils->RemoveCSSProperty(aElement,
     567                 :                                      nsEditProperty::cssPosition,
     568               0 :                                      EmptyString(), false);
     569                 :     mHTMLCSSUtils->RemoveCSSProperty(aElement,
     570                 :                                      nsEditProperty::cssTop,
     571               0 :                                      EmptyString(), false);
     572                 :     mHTMLCSSUtils->RemoveCSSProperty(aElement,
     573                 :                                      nsEditProperty::cssLeft,
     574               0 :                                      EmptyString(), false);
     575                 :     mHTMLCSSUtils->RemoveCSSProperty(aElement,
     576                 :                                      nsEditProperty::cssZIndex,
     577               0 :                                      EmptyString(), false);
     578                 : 
     579               0 :     if (!nsHTMLEditUtils::IsImage(aElement)) {
     580                 :       mHTMLCSSUtils->RemoveCSSProperty(aElement,
     581                 :                                        nsEditProperty::cssWidth,
     582               0 :                                        EmptyString(), false);
     583                 :       mHTMLCSSUtils->RemoveCSSProperty(aElement,
     584                 :                                        nsEditProperty::cssHeight,
     585               0 :                                        EmptyString(), false);
     586                 :     }
     587                 : 
     588               0 :     nsCOMPtr<dom::Element> element = do_QueryInterface(aElement);
     589               0 :     if (element && element->IsHTML(nsGkAtoms::div) && !HasStyleOrIdOrClass(element)) {
     590               0 :       nsHTMLEditRules* htmlRules = static_cast<nsHTMLEditRules*>(mRules.get());
     591               0 :       NS_ENSURE_TRUE(htmlRules, NS_ERROR_FAILURE);
     592               0 :       res = htmlRules->MakeSureElemStartsOrEndsOnCR(aElement);
     593               0 :       NS_ENSURE_SUCCESS(res, res);
     594               0 :       res = RemoveContainer(aElement);
     595                 :     }
     596                 :   }
     597               0 :   return res;
     598                 : }
     599                 : 
     600                 : NS_IMETHODIMP
     601               0 : nsHTMLEditor::SetSnapToGridEnabled(bool aEnabled)
     602                 : {
     603               0 :   mSnapToGridEnabled = aEnabled;
     604               0 :   return NS_OK;
     605                 : }
     606                 : 
     607                 : NS_IMETHODIMP
     608               0 : nsHTMLEditor::GetSnapToGridEnabled(bool * aIsEnabled)
     609                 : {
     610               0 :   *aIsEnabled = mSnapToGridEnabled;
     611               0 :   return NS_OK;
     612                 : }
     613                 : 
     614                 : NS_IMETHODIMP
     615               0 : nsHTMLEditor::SetGridSize(PRUint32 aSize)
     616                 : {
     617               0 :   mGridSize = aSize;
     618               0 :   return NS_OK;
     619                 : }
     620                 : 
     621                 : NS_IMETHODIMP
     622               0 : nsHTMLEditor::GetGridSize(PRUint32 * aSize)
     623                 : {
     624               0 :   *aSize = mGridSize;
     625               0 :   return NS_OK;
     626                 : }
     627                 : 
     628                 : // self-explanatory
     629                 : NS_IMETHODIMP
     630               0 : nsHTMLEditor::SetElementPosition(nsIDOMElement *aElement, PRInt32 aX, PRInt32 aY)
     631                 : {
     632               0 :   nsAutoEditBatch batchIt(this);
     633                 : 
     634                 :   mHTMLCSSUtils->SetCSSPropertyPixels(aElement,
     635                 :                                       nsEditProperty::cssLeft,
     636                 :                                       aX,
     637               0 :                                       false);
     638                 :   mHTMLCSSUtils->SetCSSPropertyPixels(aElement,
     639                 :                                       nsEditProperty::cssTop,
     640                 :                                       aY,
     641               0 :                                       false);
     642               0 :   return NS_OK;
     643                 : }
     644                 : 
     645                 : // self-explanatory
     646                 : NS_IMETHODIMP
     647               0 : nsHTMLEditor::GetPositionedElement(nsIDOMElement ** aReturn)
     648                 : {
     649               0 :   *aReturn = mAbsolutelyPositionedObject;
     650               0 :   NS_IF_ADDREF(*aReturn);
     651               0 :   return NS_OK;
     652                 : }
     653                 : 
     654                 : nsresult
     655               0 : nsHTMLEditor::CheckPositionedElementBGandFG(nsIDOMElement * aElement,
     656                 :                                             nsAString & aReturn)
     657                 : {
     658                 :   // we are going to outline the positioned element and bring it to the
     659                 :   // front to overlap any other element intersecting with it. But
     660                 :   // first, let's see what's the background and foreground colors of the
     661                 :   // positioned element.
     662                 :   // if background-image computed value is 'none,
     663                 :   //   If the background color is 'auto' and R G B values of the foreground are
     664                 :   //       each above #d0, use a black background
     665                 :   //   If the background color is 'auto' and at least one of R G B values of
     666                 :   //       the foreground is below #d0, use a white background
     667                 :   // Otherwise don't change background/foreground
     668                 : 
     669               0 :   aReturn.Truncate();
     670                 :   
     671               0 :   nsAutoString bgImageStr;
     672                 :   nsresult res =
     673                 :     mHTMLCSSUtils->GetComputedProperty(aElement,
     674                 :                                        nsEditProperty::cssBackgroundImage,
     675               0 :                                        bgImageStr);
     676               0 :   NS_ENSURE_SUCCESS(res, res);
     677               0 :   if (bgImageStr.EqualsLiteral("none")) {
     678               0 :     nsAutoString bgColorStr;
     679                 :     res =
     680                 :       mHTMLCSSUtils->GetComputedProperty(aElement,
     681                 :                                          nsEditProperty::cssBackgroundColor,
     682               0 :                                          bgColorStr);
     683               0 :     NS_ENSURE_SUCCESS(res, res);
     684               0 :     if (bgColorStr.EqualsLiteral("transparent")) {
     685               0 :       nsCOMPtr<nsIDOMWindow> window;
     686               0 :       res = mHTMLCSSUtils->GetDefaultViewCSS(aElement, getter_AddRefs(window));
     687               0 :       NS_ENSURE_SUCCESS(res, res);
     688                 : 
     689               0 :       nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
     690               0 :       res = window->GetComputedStyle(aElement, EmptyString(), getter_AddRefs(cssDecl));
     691               0 :       NS_ENSURE_SUCCESS(res, res);
     692                 : 
     693                 :       // from these declarations, get the one we want and that one only
     694               0 :       nsCOMPtr<nsIDOMCSSValue> colorCssValue;
     695               0 :       res = cssDecl->GetPropertyCSSValue(NS_LITERAL_STRING("color"), getter_AddRefs(colorCssValue));
     696               0 :       NS_ENSURE_SUCCESS(res, res);
     697                 : 
     698                 :       PRUint16 type;
     699               0 :       res = colorCssValue->GetCssValueType(&type);
     700               0 :       NS_ENSURE_SUCCESS(res, res);
     701               0 :       if (nsIDOMCSSValue::CSS_PRIMITIVE_VALUE == type) {
     702               0 :         nsCOMPtr<nsIDOMCSSPrimitiveValue> val = do_QueryInterface(colorCssValue);
     703               0 :         res = val->GetPrimitiveType(&type);
     704               0 :         NS_ENSURE_SUCCESS(res, res);
     705               0 :         if (nsIDOMCSSPrimitiveValue::CSS_RGBCOLOR == type) {
     706               0 :           nsCOMPtr<nsIDOMRGBColor> rgbColor;
     707               0 :           res = val->GetRGBColorValue(getter_AddRefs(rgbColor));
     708               0 :           NS_ENSURE_SUCCESS(res, res);
     709               0 :           nsCOMPtr<nsIDOMCSSPrimitiveValue> red, green, blue;
     710                 :           float r, g, b;
     711               0 :           res = rgbColor->GetRed(getter_AddRefs(red));
     712               0 :           NS_ENSURE_SUCCESS(res, res);
     713               0 :           res = rgbColor->GetGreen(getter_AddRefs(green));
     714               0 :           NS_ENSURE_SUCCESS(res, res);
     715               0 :           res = rgbColor->GetBlue(getter_AddRefs(blue));
     716               0 :           NS_ENSURE_SUCCESS(res, res);
     717               0 :           res = red->GetFloatValue(nsIDOMCSSPrimitiveValue::CSS_NUMBER, &r);
     718               0 :           NS_ENSURE_SUCCESS(res, res);
     719               0 :           res = green->GetFloatValue(nsIDOMCSSPrimitiveValue::CSS_NUMBER, &g);
     720               0 :           NS_ENSURE_SUCCESS(res, res);
     721               0 :           res = blue->GetFloatValue(nsIDOMCSSPrimitiveValue::CSS_NUMBER, &b);
     722               0 :           NS_ENSURE_SUCCESS(res, res);
     723               0 :           if (r >= BLACK_BG_RGB_TRIGGER &&
     724                 :               g >= BLACK_BG_RGB_TRIGGER &&
     725                 :               b >= BLACK_BG_RGB_TRIGGER)
     726               0 :             aReturn.AssignLiteral("black");
     727                 :           else
     728               0 :             aReturn.AssignLiteral("white");
     729               0 :           return NS_OK;
     730                 :         }
     731                 :       }
     732                 :     }
     733                 :   }
     734                 : 
     735               0 :   return NS_OK;
     736                 : }

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