Package org.eclipse.egit.ui.internal.push

Source Code of org.eclipse.egit.ui.internal.push.RefSpecDialog

/*******************************************************************************
* Copyright (C) 2011, Mathias Kinzler <mathias.kinzler@sap.com>
*
* 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
*******************************************************************************/
package org.eclipse.egit.ui.internal.push;

import java.util.List;

import org.eclipse.egit.ui.UIUtils;
import org.eclipse.egit.ui.UIUtils.IRefListProvider;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.components.RefContentAssistProvider;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.jgit.transport.URIish;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
* Add or edit a RefSpec
*/
public class RefSpecDialog extends TitleAreaDialog {
  private final boolean pushMode;

  private final Repository repo;

  private final RemoteConfig config;

  private RefSpec spec = new RefSpec();

  private Text sourceText;

  private Text destinationText;

  private Button forceButton;

  private Text specString;

  private boolean autoSuggestDestination;

  /**
   * Create a {@link RefSpec}
   *
   * @param parentShell
   * @param repository
   * @param config
   * @param push
   */
  public RefSpecDialog(Shell parentShell, Repository repository,
      RemoteConfig config, boolean push) {
    super(parentShell);
    setShellStyle(getShellStyle() | SWT.SHELL_TRIM);
    this.repo = repository;
    this.config = config;
    this.pushMode = push;
    this.autoSuggestDestination = !pushMode;
    setHelpAvailable(false);
  }

  /**
   * Edit a {@link RefSpec}
   *
   * @param parentShell
   * @param repository
   * @param config
   * @param spec
   * @param push
   */
  public RefSpecDialog(Shell parentShell, Repository repository,
      RemoteConfig config, RefSpec spec, boolean push) {
    this(parentShell, repository, config, push);
    this.spec = spec;
  }

  @Override
  protected void configureShell(Shell newShell) {
    super.configureShell(newShell);
    newShell.setText(UIText.RefSpecDialog_WindowTitle);
  }

  @Override
  public void create() {
    super.create();
    if (pushMode) {
      setTitle(UIText.RefSpecDialog_PushTitle);
      setMessage(UIText.RefSpecDialog_PushMessage);
    } else {
      setTitle(UIText.RefSpecDialog_FetchTitle);
      setMessage(UIText.RefSpecDialog_FetchMessage);
    }
    // the user must enter something
    getButton(OK).setEnabled(false);
  }

  @Override
  protected Control createDialogArea(Composite parent) {
    Composite main = new Composite(parent, SWT.NONE);
    GridDataFactory.fillDefaults().grab(true, true).applyTo(main);
    main.setLayout(new GridLayout(2, false));

    URIish uriToCheck;
    if (pushMode) {
      if (config.getPushURIs().isEmpty())
        uriToCheck = config.getURIs().get(0);
      else
        uriToCheck = config.getPushURIs().get(0);
    } else
      uriToCheck = config.getURIs().get(0);

    final RefContentAssistProvider assistProvider = new RefContentAssistProvider(
        repo, uriToCheck, getShell());

    // source
    Label sourceLabel = new Label(main, SWT.NONE);
    if (pushMode)
      sourceLabel.setText(UIText.RefSpecDialog_SourceBranchPushLabel);
    else
      sourceLabel.setText(UIText.RefSpecDialog_SourceBranchFetchLabel);
    sourceText = new Text(main, SWT.BORDER);
    GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true,
        false).applyTo(sourceText);
    if (spec != null && spec.getSource() != null)
      sourceText.setText(spec.getSource());
    sourceText.addModifyListener(new ModifyListener() {
      public void modifyText(ModifyEvent e) {
        if (sourceText.isFocusControl())
          if (autoSuggestDestination) {
            String name = sourceText.getText();
            if (name.startsWith(Constants.R_HEADS))
              name = name.substring(Constants.R_HEADS.length());
            else if (name.startsWith(Constants.R_TAGS))
              name = name.substring(Constants.R_TAGS.length());
            RefSpec sourceChanged = getSpec().setSource(
                sourceText.getText());
            setSpec(sourceChanged
                .setDestination(Constants.R_REMOTES
                    + config.getName() + '/' + name));
          } else
            setSpec(getSpec().setSource(sourceText.getText()));
      }
    });
    // content assist for source
    UIUtils.addRefContentProposalToText(sourceText, repo,
        new IRefListProvider() {
          public List<Ref> getRefList() {
            return assistProvider.getRefsForContentAssist(true, pushMode);
          }
        });

    // suggest remote tracking branch
    if (!pushMode) {
      final Button autoSuggest = new Button(main, SWT.CHECK);
      GridDataFactory.fillDefaults().span(2, 1).applyTo(autoSuggest);
      autoSuggest.setText(UIText.RefSpecDialog_AutoSuggestCheckbox);
      autoSuggest.setSelection(true);
      autoSuggest.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
          autoSuggestDestination = autoSuggest.getSelection();
        }
      });
    }

    // destination
    Label destinationLabel = new Label(main, SWT.NONE);
    if (pushMode)
      destinationLabel.setText(UIText.RefSpecDialog_DestinationPushLabel);
    else
      destinationLabel
          .setText(UIText.RefSpecDialog_DestinationFetchLabel);
    destinationText = new Text(main, SWT.BORDER);
    GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true,
        false).applyTo(destinationText);
    if (spec != null && spec.getDestination() != null)
      destinationText.setText(spec.getDestination());
    destinationText.addModifyListener(new ModifyListener() {
      public void modifyText(ModifyEvent e) {
        if (destinationText.isFocusControl())
          setSpec(getSpec().setDestination(destinationText.getText()));
      }
    });
    // content assist for destination
    UIUtils.addRefContentProposalToText(destinationText, repo,
        new IRefListProvider() {
          public List<Ref> getRefList() {
            return assistProvider.getRefsForContentAssist(false, pushMode);
          }
        });

    // force update
    forceButton = new Button(main, SWT.CHECK);
    forceButton.setText(UIText.RefSpecDialog_ForceUpdateCheckbox);
    GridDataFactory.fillDefaults().span(2, 1).applyTo(forceButton);
    if (spec != null)
      forceButton.setSelection(spec.isForceUpdate());
    forceButton.addSelectionListener(new SelectionAdapter() {
      @Override
      public void widgetSelected(SelectionEvent e) {
        if (getSpec().isForceUpdate() == forceButton.getSelection())
          return;
        setSpec(getSpec().setForceUpdate(forceButton.getSelection()));
      }

    });

    // RefSpec as String
    Label stringLabel = new Label(main, SWT.NONE);
    stringLabel.setText(UIText.RefSpecDialog_SpecificationLabel);
    specString = new Text(main, SWT.BORDER);
    GridDataFactory.fillDefaults().span(2, 1).grab(true, false).applyTo(
        specString);
    if (spec != null)
      specString.setText(spec.toString());
    specString.addModifyListener(new ModifyListener() {
      public void modifyText(ModifyEvent e) {
        if (!specString.isFocusControl()
            || getSpec().toString().equals(specString.getText()))
          return;
        setSpec(new RefSpec(specString.getText()));
      }
    });

    applyDialogFont(main);
    return main;
  }

  /**
   * @return the {@link RefSpec}
   */
  public RefSpec getSpec() {
    return this.spec;
  }

  private void setSpec(RefSpec spec) {
    setErrorMessage(null);
    this.spec = spec;
    String newSourceText = spec.getSource() != null ? spec.getSource() : ""; //$NON-NLS-1$
    String newDestinationText = spec.getDestination() != null ? spec
        .getDestination() : ""; //$NON-NLS-1$
    String newStringText = spec.toString();
    if (!sourceText.getText().equals(newSourceText))
      sourceText.setText(newSourceText);
    if (!destinationText.getText().equals(newDestinationText))
      destinationText.setText(newDestinationText);
    if (!specString.getText().equals(newStringText))
      specString.setText(newStringText);
    forceButton.setSelection(spec.isForceUpdate());
    if (sourceText.getText().length() == 0
        || destinationText.getText().length() == 0)
      setErrorMessage(UIText.RefSpecDialog_MissingDataMessage);
    getButton(OK).setEnabled(
        sourceText.getText().length() > 0
            && destinationText.getText().length() > 0);
  }

}
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