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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.editors.layout;
import com.android.ide.common.resources.ResourceFolder;
import com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor;
import com.android.ide.eclipse.adt.internal.resources.manager.ResourceManager;
import com.android.resources.ResourceFolderType;
import org.eclipse.core.resources.IFile;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorMatchingStrategy;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.FileEditorInput;
/**
* Matching strategy for the Layout Editor. This is used to open all configurations of a layout
* in the same editor.
*/
public class LayoutEditorMatchingStrategy implements IEditorMatchingStrategy {
@Override
public boolean matches(IEditorReference editorRef, IEditorInput input) {
// first check that the file being opened is a layout file.
if (input instanceof FileEditorInput) {
FileEditorInput fileInput = (FileEditorInput)input;
// get the IFile object and check it's in one of the layout folders.
IFile file = fileInput.getFile();
ResourceManager manager = ResourceManager.getInstance();
ResourceFolder resFolder = manager.getResourceFolder(file);
// Per the IEditorMatchingStrategy documentation, editorRef.getEditorInput()
// is expensive so try exclude files that definitely don't match, such
// as those with the wrong extension or wrong file name
if (!file.getName().equals(editorRef.getName()) ||
!editorRef.getId().equals(CommonXmlEditor.ID)) {
return false;
}
// if it's a layout, we now check the name of the fileInput against the name of the
// file being currently edited by the editor since those are independent of the config.
if (resFolder != null && resFolder.getType() == ResourceFolderType.LAYOUT) {
try {
IEditorInput editorInput = editorRef.getEditorInput();
if (editorInput instanceof FileEditorInput) {
FileEditorInput editorFileInput = (FileEditorInput)editorInput;
IFile editorFile = editorFileInput.getFile();
ResourceFolder editorFolder = manager.getResourceFolder(editorFile);
if (editorFolder == null
|| editorFolder.getType() != ResourceFolderType.LAYOUT) {
return false;
}
return editorFile.getProject().equals(file.getProject())
&& editorFile.getName().equals(file.getName());
}
} catch (PartInitException e) {
// we do nothing, we'll just return false.
}
}
}
return false;
}
}
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