2002-01-30 07:44:14 +03:00
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. All Rights Reserved.
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*
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* Contributor(s):
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* Simon Fraser <sfraser@netscape.com>
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*/
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#include "nsIComponentManager.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIDOMWindow.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsDocShellEditorData.h"
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/*---------------------------------------------------------------------------
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nsDocShellEditorData
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----------------------------------------------------------------------------*/
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nsDocShellEditorData::nsDocShellEditorData(nsIDocShell* inOwningDocShell)
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: mDocShell(inOwningDocShell)
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, mMakeEditable(PR_FALSE)
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{
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NS_ASSERTION(mDocShell, "Where is my docShell?");
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}
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/*---------------------------------------------------------------------------
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~nsDocShellEditorData
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----------------------------------------------------------------------------*/
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nsDocShellEditorData::~nsDocShellEditorData()
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{
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2002-11-20 09:23:05 +03:00
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// Get editing session on the root docShell
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nsCOMPtr <nsIEditingSession> editingSession;
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2003-11-03 16:18:38 +03:00
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GetOrCreateEditingSession(PR_FALSE, getter_AddRefs(editingSession));
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2002-11-20 09:23:05 +03:00
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if (editingSession)
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{
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nsCOMPtr<nsIDOMWindow> domWindow = do_GetInterface(mDocShell);
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// This will eventually call nsDocShellEditorData::SetEditor(nsnull)
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// which will call mEditorPreDestroy() and delete the editor
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editingSession->TearDownEditorOnWindow(domWindow);
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}
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else if (mEditor) // Should never have this w/o nsEditingSession!
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2002-01-30 07:44:14 +03:00
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{
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mEditor->PreDestroy();
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mEditor = nsnull; // explicit clear to make destruction order predictable
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}
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}
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/*---------------------------------------------------------------------------
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MakeEditable
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----------------------------------------------------------------------------*/
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nsresult
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nsDocShellEditorData::MakeEditable(PRBool inWaitForUriLoad /*, PRBool inEditable */)
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{
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if (mMakeEditable)
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return NS_OK;
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// if we are already editable, and are getting turned off,
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// nuke the editor.
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if (mEditor)
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{
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NS_WARNING("Destroying existing editor on frame");
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mEditor->PreDestroy();
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mEditor = nsnull;
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}
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mMakeEditable = PR_TRUE;
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return NS_OK;
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}
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/*---------------------------------------------------------------------------
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GetEditable
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----------------------------------------------------------------------------*/
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PRBool
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nsDocShellEditorData::GetEditable()
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{
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return mMakeEditable || (mEditor != nsnull);
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}
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/*---------------------------------------------------------------------------
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CreateEditor
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----------------------------------------------------------------------------*/
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nsresult
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nsDocShellEditorData::CreateEditor()
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{
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nsCOMPtr<nsIEditingSession> editingSession;
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nsresult rv = GetEditingSession(getter_AddRefs(editingSession));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMWindow> domWindow = do_GetInterface(mDocShell);
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rv = editingSession->SetupEditorOnWindow(domWindow);
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if (NS_FAILED(rv)) return rv;
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return NS_OK;
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}
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/*---------------------------------------------------------------------------
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GetEditingSession
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----------------------------------------------------------------------------*/
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nsresult
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nsDocShellEditorData::GetEditingSession(nsIEditingSession **outEditingSession)
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{
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NS_ENSURE_ARG_POINTER(outEditingSession);
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2002-11-20 09:25:42 +03:00
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return GetOrCreateEditingSession(PR_TRUE, outEditingSession);
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2002-01-30 07:44:14 +03:00
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}
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/*---------------------------------------------------------------------------
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GetEditor
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----------------------------------------------------------------------------*/
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nsresult
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nsDocShellEditorData::GetEditor(nsIEditor **outEditor)
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{
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NS_ENSURE_ARG_POINTER(outEditor);
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NS_IF_ADDREF(*outEditor = mEditor);
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return NS_OK;
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}
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/*---------------------------------------------------------------------------
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SetEditor
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----------------------------------------------------------------------------*/
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nsresult
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nsDocShellEditorData::SetEditor(nsIEditor *inEditor)
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{
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// destroy any editor that we have. Checks for equality are
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// necessary to ensure that assigment into the nsCOMPtr does
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// not temporarily reduce the refCount of the editor to zero
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if (mEditor.get() != inEditor)
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{
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if (mEditor)
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{
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mEditor->PreDestroy();
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mEditor = nsnull;
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}
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mEditor = inEditor; // owning addref
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}
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return NS_OK;
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}
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/*---------------------------------------------------------------------------
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GetOrCreateEditingSession
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This creates the editing session on the content root docShell,
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irrespective of the shell owning 'this'.
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----------------------------------------------------------------------------*/
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nsresult
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2002-11-20 09:25:42 +03:00
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nsDocShellEditorData::GetOrCreateEditingSession(PRBool inAllowCreation, nsIEditingSession **outEditingSession)
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2002-01-30 07:44:14 +03:00
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{
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NS_ENSURE_ARG_POINTER(outEditingSession);
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*outEditingSession = nsnull;
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NS_ASSERTION(mDocShell, "Should have docShell here");
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocShellTreeItem> owningShell = do_QueryInterface(mDocShell);
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if (!owningShell) return NS_ERROR_FAILURE;
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// Get the root docshell
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nsCOMPtr<nsIDocShellTreeItem> contentRootShell;
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owningShell->GetSameTypeRootTreeItem(getter_AddRefs(contentRootShell));
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if (!contentRootShell) return NS_ERROR_FAILURE;
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if (contentRootShell.get() == owningShell.get())
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{
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// if we're on the root shell, go ahead and create the editing shell
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// if necessary.
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if (!mEditingSession)
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{
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2002-11-20 09:23:05 +03:00
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// Caller doesn't want a new EditingSession if it doesn't already exist
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if (!inAllowCreation)
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return NS_OK;
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2002-01-30 07:44:14 +03:00
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mEditingSession = do_CreateInstance("@mozilla.org/editor/editingsession;1", &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMWindow> domWindow(do_GetInterface(mDocShell, &rv));
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if (NS_FAILED(rv)) return rv;
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rv = mEditingSession->Init(domWindow);
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if (NS_FAILED(rv)) return rv;
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}
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NS_ADDREF(*outEditingSession = mEditingSession.get());
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}
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else
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{
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// otherwise we're on a subshell. In this case, call GetInterface
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// on the root shell, which will come back into this routine,
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// to the block above, and give us back the editing session on
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// the content root.
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nsCOMPtr<nsIEditingSession> editingSession = do_GetInterface(contentRootShell);
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NS_ASSERTION(editingSession, "should have been able to get the editing session here");
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NS_IF_ADDREF(*outEditingSession = editingSession.get());
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}
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return (*outEditingSession) ? NS_OK : NS_ERROR_FAILURE;
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}
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