Mozilla/mozilla/embedding/tests/mfcembed/EditorFrm.cpp

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (the "License"); you may not use this file except in
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 *
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 * 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):
 *   Mike Judge <mjudge@netscape.com>
 *   Chak Nanga <chak@netscape.com> 
 *
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
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#include "stdafx.h"
#include "MfcEmbed.h"
#include "BrowserFrm.h"
#include "EditorFrm.h"

//------------------------------------------------------------
//              Editor Command/Parameter Names
//------------------------------------------------------------
#define BOLD_COMMAND        NS_LITERAL_STRING("cmd_bold")
#define ITALIC_COMMAND      NS_LITERAL_STRING("cmd_italic")
#define UNDERLINE_COMMAND   NS_LITERAL_STRING("cmd_underline")

#define COMMAND_NAME        NS_LITERAL_STRING("cmd_name")
#define STATE_ALL           NS_LITERAL_STRING("state_all")
#define STATE_MIXED         NS_LITERAL_STRING("state_mixed")

IMPLEMENT_DYNAMIC(CEditorFrame, CBrowserFrame)

BEGIN_MESSAGE_MAP(CEditorFrame, CBrowserFrame)
	//{{AFX_MSG_MAP(CEditorFrame)
    ON_COMMAND(ID_BOLD, OnBold)
    ON_UPDATE_COMMAND_UI(ID_BOLD, OnUpdateBold)
    ON_COMMAND(ID_ITALICS, OnItalics)
    ON_UPDATE_COMMAND_UI(ID_ITALICS, OnUpdateItalics)
    ON_COMMAND(ID_UNDERLINE, OnUnderline)
    ON_UPDATE_COMMAND_UI(ID_UNDERLINE, OnUpdateUnderline)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

CEditorFrame::CEditorFrame(PRUint32 chromeMask)
{
    m_chromeMask = chromeMask;

    mCommandManager = nsnull;
}

CEditorFrame::~CEditorFrame()
{
}

BOOL CEditorFrame::InitEditor()
{
    // Get and save off nsICommandManager for later use
    //
    nsresult rv;
    mCommandManager = do_GetInterface(m_wndBrowserView.mWebBrowser, &rv);

    rv = MakeEditable();
 
    return (NS_SUCCEEDED(rv));
}

void CEditorFrame::OnBold() 
{
    ExecuteStyleCommand(BOLD_COMMAND);
}

void CEditorFrame::OnUpdateBold(CCmdUI* pCmdUI) 
{
    UpdateStyleToolBarBtn(BOLD_COMMAND, pCmdUI);
}

void CEditorFrame::OnItalics() 
{
    ExecuteStyleCommand(ITALIC_COMMAND);
}

void CEditorFrame::OnUpdateItalics(CCmdUI* pCmdUI) 
{
    UpdateStyleToolBarBtn(ITALIC_COMMAND, pCmdUI);
}

void CEditorFrame::OnUnderline() 
{
    ExecuteStyleCommand(UNDERLINE_COMMAND);
}

void CEditorFrame::OnUpdateUnderline(CCmdUI* pCmdUI) 
{
    UpdateStyleToolBarBtn(UNDERLINE_COMMAND, pCmdUI);
}


// Called in response to the ON_COMMAND messages generated
// when style related toolbar buttons(bold, italic etc)
// are clicked
//
NS_METHOD
CEditorFrame::ExecuteStyleCommand(const nsAString &aCommand)
{
    nsresult rv;
    nsCOMPtr<nsICommandParams> params = do_CreateInstance(NS_COMMAND_PARAMS_CONTRACTID, &rv);
    if (NS_FAILED(rv) || !params)
        return rv;

    params->SetBooleanValue(STATE_ALL, true);
    params->SetStringValue(COMMAND_NAME, aCommand);

    return DoCommand(params);
}

// Called in response to the UPDATE_COMMAND_UI messages for 
// style related toolbar buttons(bold, italic etc.)
// to update their current state
//
void CEditorFrame::UpdateStyleToolBarBtn(const nsAString &aCommand, CCmdUI* pCmdUI)
{
    nsresult rv;
    nsCOMPtr<nsICommandParams> params = do_CreateInstance(NS_COMMAND_PARAMS_CONTRACTID,&rv);
    params->SetStringValue(COMMAND_NAME, aCommand);

    rv = GetCommandState(params);
    if (NS_SUCCEEDED(rv))
    {
        // Does our current selection span mixed styles?
        // If so, set the toolbar button to an indeterminate
        // state
        //
        PRBool bMixedStyle = PR_FALSE;
        rv = params->GetBooleanValue(STATE_MIXED, &bMixedStyle);
        if (NS_SUCCEEDED(rv))
        {
            if(bMixedStyle)
            {
                pCmdUI->SetCheck(2);
                return;
            }
        }

        // We're not in STATE_MIXED. Enable/Disable the
        // toolbar button based on it's current state
        //
        PRBool bCmdEnabled = PR_FALSE;
        rv = params->GetBooleanValue(STATE_ALL, &bCmdEnabled);
        if (NS_SUCCEEDED(rv))
        {
            bCmdEnabled ? pCmdUI->SetCheck(1) : pCmdUI->SetCheck(0);
        }
    }
}

NS_METHOD
CEditorFrame::MakeEditable()
{
    nsresult rv;
    nsCOMPtr<nsIDOMWindow> domWindow;
    m_wndBrowserView.mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
    if (!domWindow)
        return NS_ERROR_FAILURE;

    nsCOMPtr<nsIScriptGlobalObject> scriptGlobalObject = do_QueryInterface(domWindow);
    if (!scriptGlobalObject)
        return NS_ERROR_FAILURE;

    nsCOMPtr<nsIDocShell> docShell;
    rv  = scriptGlobalObject->GetDocShell(getter_AddRefs(docShell));
    if (NS_FAILED(rv))
        return rv;
    if (!docShell)
        return NS_ERROR_FAILURE;
  
    nsCOMPtr<nsIEditingSession> editingSession = do_GetInterface(docShell);
    if (!editingSession)
        return NS_ERROR_FAILURE;
  
    rv= editingSession->MakeWindowEditable(domWindow, PR_TRUE);
    // this can fail for the root (if it's a frameset), but we still want
    // to make children editable
  
    nsCOMPtr<nsISimpleEnumerator> docShellEnumerator;
    docShell->GetDocShellEnumerator( nsIDocShellTreeItem::typeContent,
                                    nsIDocShell::ENUMERATE_FORWARDS,
                                    getter_AddRefs(docShellEnumerator));  
    if (docShellEnumerator)
    {
        PRBool hasMore;
        while (NS_SUCCEEDED(docShellEnumerator->HasMoreElements(&hasMore)) && hasMore)
        {
            nsCOMPtr<nsISupports> curSupports;
            rv = docShellEnumerator->GetNext(getter_AddRefs(curSupports));
            if (NS_FAILED(rv)) break;

            nsCOMPtr<nsIDocShell> curShell = do_QueryInterface(curSupports, &rv);
            if (NS_FAILED(rv)) break;

            nsCOMPtr<nsIDOMWindow> childWindow = do_GetInterface(curShell,&rv);
            if (childWindow)
                editingSession->MakeWindowEditable(childWindow, PR_FALSE);
        }
    }

    return NS_OK;  
}

NS_METHOD
CEditorFrame::DoCommand(nsICommandParams *aCommandParams)
{
    return mCommandManager ? mCommandManager->DoCommand(aCommandParams) : NS_ERROR_FAILURE;
}

NS_METHOD
CEditorFrame::IsCommandEnabled(const nsAString &aCommand, PRBool *retval)
{
    return mCommandManager ? mCommandManager->IsCommandEnabled(aCommand, retval) : NS_ERROR_FAILURE;
}


NS_METHOD
CEditorFrame::GetCommandState(nsICommandParams *aCommandParams)
{
    return mCommandManager ? mCommandManager->GetCommandState(aCommandParams) : NS_ERROR_FAILURE;
}