org.zmlx.hg4idea.execution.HgDeleteModifyPromptHandler.java Source code

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Here is the source code for org.zmlx.hg4idea.execution.HgDeleteModifyPromptHandler.java

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/*
 * Copyright 2000-2016 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 org.zmlx.hg4idea.execution;

import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.ui.Messages;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.awt.*;
import java.lang.reflect.InvocationTargetException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author Nadya Zabrodina
 */
public class HgDeleteModifyPromptHandler implements HgPromptHandler {

    private static final Logger LOG = Logger.getInstance("#org.zmlx.hg4idea.execution.HgDeleteModifyPromptHandler");

    private static final Pattern LOCAL_DELETE_REMOTE_MODIFIED_CONFLICT_MESSAGE_PATTERN = Pattern
            .compile("remote\\schanged(.+)which\\slocal\\sdeleted\\s.+");
    private static final Pattern REMOTE_DELETE_LOCAL_MODIFIED_CONFLICT_MESSAGE_PATTERN = Pattern
            .compile("\\slocal\\schanged(.+)which\\sremote\\sdeleted\\s.+");

    public HgPromptChoice promptUser(@NotNull final String message, @NotNull final HgPromptChoice[] choices,
            @NotNull final HgPromptChoice defaultChoice) {

        Matcher localDelMatcher = LOCAL_DELETE_REMOTE_MODIFIED_CONFLICT_MESSAGE_PATTERN.matcher(message);
        Matcher localModifyMatcher = REMOTE_DELETE_LOCAL_MODIFIED_CONFLICT_MESSAGE_PATTERN.matcher(message);
        String filename;
        final String modifiedMessage;
        if (localDelMatcher.matches()) {
            filename = localDelMatcher.group(1);
            modifiedMessage = "File " + filename
                    + " is deleted locally, but modified remotely. Do you want to keep the modified version or remove the file?";
        } else if (localModifyMatcher.matches()) {
            filename = localModifyMatcher.group(1);
            modifiedMessage = "File " + filename
                    + " is deleted remotely, but modified locally. Do you want to keep the modified version or remove the file?";
        } else {
            modifiedMessage = message;
        }
        final int[] chosen = new int[] { -1 };
        try {
            EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    String[] choicePresentationArray = new String[choices.length];
                    for (int i = 0; i < choices.length; ++i) {
                        choicePresentationArray[i] = choices[i].toString();
                    }
                    chosen[0] = Messages.showDialog(modifiedMessage, "Delete-Modify Conflict",
                            choicePresentationArray, defaultChoice.getChosenIndex(), Messages.getQuestionIcon());
                }
            });
        } catch (InterruptedException | InvocationTargetException e) {
            LOG.error(e);
            return defaultChoice;
        }
        return chosen[0] >= 0 ? choices[chosen[0]] : HgPromptChoice.ABORT;
    }

    public boolean shouldHandle(@Nullable String message) {
        if (message == null) {
            return false;
        }
        Matcher localDelMatcher = LOCAL_DELETE_REMOTE_MODIFIED_CONFLICT_MESSAGE_PATTERN.matcher(message);
        Matcher localModifyMatcher = REMOTE_DELETE_LOCAL_MODIFIED_CONFLICT_MESSAGE_PATTERN.matcher(message);
        if (localDelMatcher.matches() || localModifyMatcher.matches()) {
            return true;
        }
        return false;
    }
}