/*
* Copyright 2013 The authors
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.intellij.struts2.structure;
import com.intellij.ide.structureView.StructureViewBuilder;
import com.intellij.ide.structureView.StructureViewModel;
import com.intellij.ide.structureView.xml.XmlStructureViewBuilderProvider;
import com.intellij.openapi.editor.Editor;
import com.intellij.psi.xml.XmlFile;
import com.intellij.util.ConstantFunction;
import com.intellij.util.xml.DomElement;
import com.intellij.util.xml.DomFileElement;
import com.intellij.util.xml.DomService;
import com.intellij.util.xml.structure.DomStructureViewBuilder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Base-class for DOM-model based structure views.
*
* @author Yann Cébron
*/
abstract class BaseStructureViewBuilderProvider implements XmlStructureViewBuilderProvider {
static final ConstantFunction<DomElement, DomService.StructureViewMode> ALWAYS_SHOW =
new ConstantFunction<>(DomService.StructureViewMode.SHOW);
/**
* Returns the DomFileElement depending on the root tag of the implementing class.
*
* @param xmlFile File to get DomFileElement for.
* @return null if file doesn't match.
*/
@Nullable
protected abstract DomFileElement getFileElement(@NotNull final XmlFile xmlFile);
/**
* DomElement classes always having "plus" sign.
*
* @return Classes.
*/
protected abstract Class[] getAlwaysPlus();
/**
* DomElement classes always being leaf.
*
* @return Classes.
*/
protected abstract Class[] getAlwaysLeaf();
@Override
@Nullable
public StructureViewBuilder createStructureViewBuilder(@NotNull final XmlFile xmlFile) {
final DomFileElement fileElement = getFileElement(xmlFile);
if (fileElement == null) {
return null;
}
return new DomStructureViewBuilder(xmlFile, ALWAYS_SHOW) {
@NotNull
@Override
public StructureViewModel createStructureViewModel(@Nullable Editor editor) {
return new StructureViewTreeModel(xmlFile, editor, getAlwaysPlus(), getAlwaysLeaf(), ALWAYS_SHOW);
}
};
}
}