com.vectrace.MercurialEclipse.synchronize.actions.PushPullSynchronizeAction.java Source code

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Here is the source code for com.vectrace.MercurialEclipse.synchronize.actions.PushPullSynchronizeAction.java

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/*******************************************************************************
 * Copyright (c) 2004, 2006 Subclipse project and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Subclipse project committers - initial API and implementation
 *     Bastian Doetsch            - Adaption to Mercurial
 *     Andrei Loskutov              - bug fixes
 *******************************************************************************/
package com.vectrace.MercurialEclipse.synchronize.actions;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.compare.structuremergeviewer.IDiffElement;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.team.ui.synchronize.ISynchronizePageConfiguration;
import org.eclipse.team.ui.synchronize.ISynchronizeParticipant;
import org.eclipse.team.ui.synchronize.SynchronizeModelAction;
import org.eclipse.team.ui.synchronize.SynchronizeModelOperation;

import com.vectrace.MercurialEclipse.MercurialEclipsePlugin;
import com.vectrace.MercurialEclipse.model.ChangeSet;
import com.vectrace.MercurialEclipse.model.ChangeSet.Direction;
import com.vectrace.MercurialEclipse.model.WorkingChangeSet;
import com.vectrace.MercurialEclipse.synchronize.MercurialSynchronizeParticipant;
import com.vectrace.MercurialEclipse.synchronize.cs.ChangesetGroup;
import com.vectrace.MercurialEclipse.synchronize.cs.RepositoryChangesetGroup;
import com.vectrace.MercurialEclipse.team.MercurialTeamProvider;
import com.vectrace.MercurialEclipse.utils.BranchUtils;

/**
 * Get action that appears in the synchronize view. It's main purpose is to
 * filter the selection and delegate its execution to the get operation.
 */
public class PushPullSynchronizeAction extends SynchronizeModelAction {

    private final boolean update;
    private final boolean isPull;
    private boolean allowAll;

    public PushPullSynchronizeAction(String text, ISynchronizePageConfiguration configuration,
            ISelectionProvider selectionProvider, boolean isPull, boolean update) {
        super(text, configuration, selectionProvider);
        this.isPull = isPull;
        this.update = update;
        this.allowAll = false;
        if (isPull) {
            setImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("actions/update.gif"));
        } else {
            setImageDescriptor(MercurialEclipsePlugin.getImageDescriptor("actions/commit.gif"));
        }
    }

    public void setAllowAll(boolean b) {
        this.allowAll = b;
    }

    @Override
    protected SynchronizeModelOperation getSubscriberOperation(ISynchronizePageConfiguration configuration,
            IDiffElement[] elements) {
        IStructuredSelection sel = getStructuredSelection();
        Set<Object> target = new HashSet<Object>();
        ISynchronizeParticipant part = getConfiguration().getParticipant();

        if (sel instanceof TreeSelection) {
            target.addAll(((TreeSelection) sel).toList());
        } else if (allowAll && part instanceof MercurialSynchronizeParticipant) {
            target.addAll(
                    Arrays.asList(((MercurialSynchronizeParticipant) part).getRepositoryLocations().getProjects()));
        } else {
            target.addAll(sel.toList());
        }

        return new PushPullSynchronizeOperation(configuration, elements, target, isPull, update);
    }

    @Override
    protected boolean updateSelection(IStructuredSelection selection) {
        boolean updateSelection = super.updateSelection(selection);
        if (!updateSelection) {
            Object[] array = selection.toArray();
            if (selection.size() != 1) {
                return false;
            }
            return isSupported(array[0]);
        }
        return updateSelection;
    }

    public boolean isPull() {
        return isPull;
    }

    private boolean isSupported(Object object) {
        if (object instanceof IProject) {
            return true;
        }
        if (object instanceof ChangesetGroup) {
            ChangesetGroup group = (ChangesetGroup) object;
            return isMatching(group.getDirection()) && !group.getChangesets().isEmpty();
        }
        if (object instanceof RepositoryChangesetGroup) {
            RepositoryChangesetGroup group = (RepositoryChangesetGroup) object;
            if (isPull && group.getIncoming().getChangesets().size() > 0) {
                return true;
            }
            if (!isPull && group.getOutgoing().getChangesets().size() > 0) {
                return true;
            }
        }
        if (object instanceof ChangeSet) {
            ChangeSet changeSet = (ChangeSet) object;
            return !(changeSet instanceof WorkingChangeSet) && isMatching(changeSet.getDirection())
                    && (!update || !isPull || isMatchingBranch(changeSet));
        }
        return false;
    }

    private boolean isMatching(Direction d) {
        return (d == Direction.INCOMING && isPull) || (d == Direction.OUTGOING && !isPull);
    }

    private static boolean isMatchingBranch(ChangeSet cs) {
        return BranchUtils.same(MercurialTeamProvider.getCurrentBranch(cs.getHgRoot()), cs.getBranch());
    }
}