32d3b7338e
r = kmcclusk git-svn-id: svn://10.0.0.236/trunk@54910 18797224-902f-48f8-a5cc-f745e15eee43
259 lines
7.3 KiB
C++
259 lines
7.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape 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/NPL/
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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 Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsEditorController.h"
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#include "nsIGfxTextControlFrame.h"
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#include "nsIEditor.h"
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#include "nsIFormControlFrame.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIDOMSelection.h"
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NS_IMPL_ADDREF(nsEditorController)
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NS_IMPL_RELEASE(nsEditorController)
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NS_IMPL_QUERY_INTERFACE1(nsEditorController, nsIController)
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nsEditorController::nsEditorController()
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{
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NS_INIT_REFCNT();
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mContent = nsnull;
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mUndoString = "cmd_undo";
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mRedoString = "cmd_redo";
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mCutString = "cmd_cut";
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mCopyString = "cmd_copy";
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mPasteString = "cmd_paste";
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mDeleteString = "cmd_delete";
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mSelectAllString = "cmd_selectAll";
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}
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nsEditorController::~nsEditorController()
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{
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}
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NS_IMETHODIMP nsEditorController::SetContent(nsIHTMLContent *aContent)
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{
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// indiscriminately sets mContent, no ref counting here
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mContent = aContent;
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return NS_OK;
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}
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/* =======================================================================
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* nsIController
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* ======================================================================= */
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NS_IMETHODIMP nsEditorController::IsCommandEnabled(const PRUnichar *aCommand, PRBool *aResult)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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NS_ENSURE_ARG_POINTER(aResult);
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*aResult = PR_FALSE;
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nsCOMPtr<nsIEditor> editor;
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NS_ENSURE_SUCCESS(GetEditor(getter_AddRefs(editor)), NS_ERROR_FAILURE);
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// a null editor is a legal state
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if (PR_TRUE==mUndoString.Equals(aCommand))
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{ // we can undo if the editor says we can undo
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if (editor)
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{
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PRBool isEnabled;
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NS_ENSURE_SUCCESS(editor->CanUndo(isEnabled, *aResult), NS_ERROR_FAILURE);
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}
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}
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else if (PR_TRUE==mRedoString.Equals(aCommand))
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{ // we can redo if the editor says we can undo
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if (editor)
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{
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PRBool isEnabled;
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NS_ENSURE_SUCCESS(editor->CanRedo(isEnabled, *aResult), NS_ERROR_FAILURE);
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}
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}
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else if (PR_TRUE==mCutString.Equals(aCommand))
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{ // we can cut if the editor has a non-collapsed selection and is not readonly
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if (editor)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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NS_ENSURE_SUCCESS(editor->GetSelection(getter_AddRefs(selection)), NS_ERROR_FAILURE);
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if (selection)
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{
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PRBool collapsed;
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NS_ENSURE_SUCCESS(selection->GetIsCollapsed(&collapsed), NS_ERROR_FAILURE);
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if ((PR_FALSE==collapsed) && (PR_TRUE==IsEnabled())) {
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*aResult = PR_TRUE;
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}
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}
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}
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}
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else if (PR_TRUE==mCopyString.Equals(aCommand))
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{ // we can copy if the editor has a non-collapsed selection
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if (editor)
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{
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nsCOMPtr<nsIDOMSelection> selection;
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NS_ENSURE_SUCCESS(editor->GetSelection(getter_AddRefs(selection)), NS_ERROR_FAILURE);
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if (selection)
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{
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PRBool collapsed;
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NS_ENSURE_SUCCESS(selection->GetIsCollapsed(&collapsed), NS_ERROR_FAILURE);
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if (PR_FALSE==collapsed) {
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*aResult = PR_TRUE;
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}
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}
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}
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}
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else if (PR_TRUE==mPasteString.Equals(aCommand))
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{ // paste is enabled if there is text on the clipbard and if the editor is not readonly or disabled
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// XXX: implement me
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*aResult = PR_TRUE;
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}
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else if (PR_TRUE==mDeleteString.Equals(aCommand))
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{ // delete is enabled if there is any content and if the editor is not readonly or disabled
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*aResult = PR_TRUE;
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}
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else if (PR_TRUE==mSelectAllString.Equals(aCommand))
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{ // selectAll is enabled if there is any content and if the editor is not disabled (readonly is ok)
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*aResult = PR_TRUE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::SupportsCommand(const PRUnichar *aCommand, PRBool *aResult)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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NS_ENSURE_ARG_POINTER(aResult);
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// XXX: need to check the readonly and disabled states
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*aResult = PR_FALSE;
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if ((PR_TRUE==mUndoString.Equals(aCommand)) ||
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(PR_TRUE==mRedoString.Equals(aCommand)) ||
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(PR_TRUE==mCutString.Equals(aCommand)) ||
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(PR_TRUE==mCopyString.Equals(aCommand)) ||
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(PR_TRUE==mPasteString.Equals(aCommand)) ||
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(PR_TRUE==mDeleteString.Equals(aCommand)) ||
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(PR_TRUE==mSelectAllString.Equals(aCommand))
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)
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{
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*aResult = PR_TRUE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::DoCommand(const PRUnichar *aCommand)
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{
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NS_ENSURE_ARG_POINTER(aCommand);
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nsCOMPtr<nsIEditor> editor;
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NS_ENSURE_SUCCESS(GetEditor(getter_AddRefs(editor)), NS_ERROR_FAILURE);
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if (!editor)
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{ // Q: What does it mean if there is no editor?
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// A: It means we've never had focus, so we can't do anything
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return NS_OK;
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}
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if (PR_TRUE==mUndoString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->Undo(1), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mRedoString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->Redo(1), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mCutString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->Cut(), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mCopyString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->Copy(), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mPasteString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->Paste(), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mDeleteString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->DeleteSelection(nsIEditor::eDeleteNext), NS_ERROR_FAILURE);
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}
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else if (PR_TRUE==mSelectAllString.Equals(aCommand))
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{
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NS_ENSURE_SUCCESS(editor->SelectAll(), NS_ERROR_FAILURE);
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::OnEvent(const PRUnichar *aEventName)
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{
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NS_ENSURE_ARG_POINTER(aEventName);
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::GetEditor(nsIEditor ** aEditor)
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{
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NS_ENSURE_ARG_POINTER(aEditor);
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nsIGfxTextControlFrame *frame;
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NS_ENSURE_SUCCESS(GetFrame(&frame), NS_ERROR_FAILURE);
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if (!frame) { return NS_ERROR_FAILURE; }
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NS_ENSURE_SUCCESS(frame->GetEditor(aEditor), NS_ERROR_FAILURE);
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return NS_OK;
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}
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NS_IMETHODIMP nsEditorController::GetFrame(nsIGfxTextControlFrame **aFrame)
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{
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NS_ENSURE_ARG_POINTER(aFrame);
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*aFrame = nsnull;
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NS_ENSURE_STATE(mContent);
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nsIFormControlFrame *frame = nsnull;
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NS_ENSURE_SUCCESS(
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nsGenericHTMLElement::GetPrimaryFrame(mContent, frame),
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NS_ERROR_FAILURE
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);
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if (!frame) { return NS_ERROR_FAILURE; }
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NS_ENSURE_SUCCESS(
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frame->QueryInterface(nsIGfxTextControlFrame::GetIID(), (void**)aFrame),
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NS_ERROR_FAILURE
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);
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return NS_OK;
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}
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PRBool nsEditorController::IsEnabled()
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{
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return PR_TRUE; // XXX: need to implement this
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/*
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PRUint32 flags=0;
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NS_ENSURE_SUCCESS(mEditor->GetFlags(&flags), NS_ERROR_FAILURE);
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check eEditorReadonlyBit and eEditorDisabledBit
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*/
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}
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