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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.vcs.log.graph.impl.print;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.vcs.log.graph.GraphColorManager;
import com.intellij.vcs.log.graph.SimplePrintElement;
import com.intellij.vcs.log.graph.api.LinearGraph;
import com.intellij.vcs.log.graph.api.LinearGraphWithCommitInfo;
import com.intellij.vcs.log.graph.api.LinearGraphWithElementInfo;
import com.intellij.vcs.log.graph.api.elements.GraphEdge;
import com.intellij.vcs.log.graph.api.elements.GraphElement;
import com.intellij.vcs.log.graph.api.elements.GraphNode;
import com.intellij.vcs.log.graph.api.printer.PrintElementWithGraphElement;
import com.intellij.vcs.log.graph.api.printer.PrintElementsManager;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.awt.*;
import java.util.Collections;
import java.util.Set;
public abstract class AbstractPrintElementsManager<CommitId> implements PrintElementsManager {
@Nullable
public static GraphEdge containedCollapsedEdge(@NotNull GraphElement element, @NotNull LinearGraphWithElementInfo graphWithElementsInfo) {
if (element instanceof GraphEdge) {
GraphEdge edge = (GraphEdge)element;
if (edge.getType() == GraphEdge.Type.HIDE)
return edge;
} else {
int nodeIndex = ((GraphNode)element).getNodeIndex();
for (int upNode : graphWithElementsInfo.getUpNodes(nodeIndex)) {
if (graphWithElementsInfo.getEdgeType(upNode, nodeIndex) == GraphEdge.Type.HIDE)
return new GraphEdge(upNode, nodeIndex, GraphEdge.Type.HIDE);
}
for (int downNode : graphWithElementsInfo.getDownNodes(nodeIndex)) {
if (graphWithElementsInfo.getEdgeType(nodeIndex, downNode) == GraphEdge.Type.HIDE)
return new GraphEdge(nodeIndex, downNode, GraphEdge.Type.HIDE);
}
}
return null;
}
private static final Cursor DEFAULT_CURSOR = Cursor.getDefaultCursor();
private static final Cursor HAND_CURSOR = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
@NotNull
protected final LinearGraphWithCommitInfo<CommitId> myPrintedLinearGraph;
@NotNull
protected final GraphColorManager<CommitId> myColorManager;
@Nullable
private PrintElementWithGraphElement mySpecialSelectedPrintElement = null;
@NotNull
private Set<Integer> mySelectedNodes = Collections.emptySet();
protected AbstractPrintElementsManager(@NotNull LinearGraphWithCommitInfo<CommitId> printedLinearGraph, @NotNull GraphColorManager<CommitId> colorManager) {
myPrintedLinearGraph = printedLinearGraph;
myColorManager = colorManager;
}
@Override
public boolean elementIsSelected(@NotNull PrintElementWithGraphElement printElement) {
if (mySpecialSelectedPrintElement != null && printElement.equals(mySpecialSelectedPrintElement))
return true;
GraphElement graphElement = printElement.getGraphElement();
if (graphElement instanceof GraphNode) {
return mySelectedNodes.contains(((GraphNode)graphElement).getNodeIndex());
} else {
GraphEdge edge = (GraphEdge)graphElement;
return mySelectedNodes.contains(edge.getUpNodeIndex()) && mySelectedNodes.contains(edge.getDownNodeIndex());
}
}
@Nullable
@Override
public Cursor performOverElement(@Nullable PrintElementWithGraphElement printElement) {
if (printElement instanceof SimplePrintElement) {
SimplePrintElement.Type elementType = ((SimplePrintElement)printElement).getType();
if (elementType == SimplePrintElement.Type.UP_ARROW || elementType == SimplePrintElement.Type.DOWN_ARROW) {
mySelectedNodes = Collections.emptySet();
mySpecialSelectedPrintElement = printElement;
return HAND_CURSOR;
}
} else {
mySpecialSelectedPrintElement = null;
}
if (printElement != null) {
GraphEdge graphEdge = containedCollapsedEdge(printElement.getGraphElement(), myPrintedLinearGraph);
if (graphEdge != null && allowSelectCollapsedEdge(graphEdge)) {
mySelectedNodes = ContainerUtil.set(graphEdge.getUpNodeIndex(), graphEdge.getDownNodeIndex());
} else {
mySelectedNodes = getSelectedNodes(printElement.getGraphElement());
}
} else {
mySelectedNodes = Collections.emptySet();
}
return DEFAULT_CURSOR; // todo when drop GraphFacade, return null, when mySpecialSelectedPrintElement == null
}
@Override
public int getColorId(@NotNull GraphElement element) {
int upNodeIndex, downNodeIndex;
if (element instanceof GraphNode) {
upNodeIndex = ((GraphNode)element).getNodeIndex();
downNodeIndex = upNodeIndex;
} else {
GraphEdge edge = (GraphEdge)element;
upNodeIndex = edge.getUpNodeIndex();
downNodeIndex = edge.getDownNodeIndex();
}
if (downNodeIndex == LinearGraph.NOT_LOAD_COMMIT)
downNodeIndex = upNodeIndex;
int upLayoutIndex = myPrintedLinearGraph.getLayoutIndex(upNodeIndex);
int downLayoutIndex = myPrintedLinearGraph.getLayoutIndex(downNodeIndex);
CommitId headCommitId = myPrintedLinearGraph.getOneOfHeads(upNodeIndex);
if (upLayoutIndex != downLayoutIndex) {
return myColorManager.getColorOfFragment(headCommitId, Math.max(upLayoutIndex, downLayoutIndex));
}
if (upLayoutIndex == myPrintedLinearGraph.getHeadLayoutIndex(upNodeIndex))
return myColorManager.getColorOfBranch(headCommitId);
else
return myColorManager.getColorOfFragment(headCommitId, upLayoutIndex);
}
@NotNull
protected abstract Set<Integer> getSelectedNodes(@NotNull GraphElement graphElement);
protected boolean allowSelectCollapsedEdge(@NotNull GraphEdge graphEdge) {
return true;
}
}
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