Move implementation of import feature to o.e.egit.ui bundle

Since the oldest release EGit will support with 3.0 is Juno we can move
the implementation for importing a git repository from an installed
bundle with a Eclipse-SourceReferences header in its manifest to the
org.eclipse.egit.ui bundle and remove the indigo target platform.

Change-Id: I7acaf5b26aa9f305d23f828459ecd272ed13fbdc
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

3 files changed, 275 insertions, 0 deletions

diff --git a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/UIText.java b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/UIText.java
index 961fc951f2..37644de31f 100644
--- a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/UIText.java
+++ b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/UIText.java
@@ -4770,6 +4770,21 @@ public class UIText extends NLS {
 	/** */
 	public static String GitModelSynchronizeParticipant_noCachedSourceVariant;
 
+	/** */
+	public static String GitScmUrlImportWizardPage_title;
+
+	/** */
+	public static String GitScmUrlImportWizardPage_description;
+
+	/** */
+	public static String GitScmUrlImportWizardPage_importMaster;
+
+	/** */
+	public static String GitScmUrlImportWizardPage_importVersion;
+
+	/** */
+	public static String GitScmUrlImportWizardPage_counter;
+
 	static {
 		initializeMessages(BUNDLE_NAME, UIText.class);
 	}
diff --git a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/importing/GitScmUrlImportWizardPage.java b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/importing/GitScmUrlImportWizardPage.java
new file mode 100644
index 0000000000..4ab18cae50
--- /dev/null
+++ b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/importing/GitScmUrlImportWizardPage.java
@@ -0,0 +1,254 @@
+/*******************************************************************************
+ * Copyright (c) 2012 Tomasz Zarna 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:
+ *    Tomasz Zarna <Tomasz.Zarna@pl.ibm.com> - initial implementation
+ *******************************************************************************/
+package org.eclipse.egit.ui.internal.importing;
+
+import java.net.URI;
+
+import org.eclipse.egit.core.internal.GitURI;
+import org.eclipse.egit.ui.internal.SWTUtils;
+import org.eclipse.egit.ui.internal.UIText;
+import org.eclipse.jface.dialogs.IDialogSettings;
+import org.eclipse.jface.viewers.ArrayContentProvider;
+import org.eclipse.jface.viewers.ILabelProvider;
+import org.eclipse.jface.viewers.StyledCellLabelProvider;
+import org.eclipse.jface.viewers.StyledString;
+import org.eclipse.jface.viewers.TableViewer;
+import org.eclipse.jface.viewers.ViewerCell;
+import org.eclipse.jface.viewers.ViewerComparator;
+import org.eclipse.jface.wizard.WizardPage;
+import org.eclipse.osgi.util.NLS;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Table;
+import org.eclipse.team.core.ScmUrlImportDescription;
+import org.eclipse.team.ui.IScmUrlImportWizardPage;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.ide.IDE;
+
+/**
+ * Wizard page that allows the user to import repositories with SCM URLs.
+ */
+public class GitScmUrlImportWizardPage extends WizardPage implements
+		IScmUrlImportWizardPage {
+
+	private ScmUrlImportDescription[] descriptions;
+	private Label counterLabel;
+	private TableViewer bundlesViewer;
+	private Button useMaster;
+
+	private static final String GIT_PAGE_USE_MASTER = "org.eclipse.team.egit.ui.import.page.master"; //$NON-NLS-1$
+
+	static class GitLabelProvider extends StyledCellLabelProvider implements ILabelProvider {
+
+		/* (non-Javadoc)
+		 * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
+		 */
+		public Image getImage(Object element) {
+			return PlatformUI.getWorkbench().getSharedImages().getImage(IDE.SharedImages.IMG_OBJ_PROJECT);
+		}
+
+		/* (non-Javadoc)
+		 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
+		 */
+		public String getText(Object element) {
+			return getStyledText(element).getString();
+		}
+
+		/* (non-Javadoc)
+		 * @see org.eclipse.jface.viewers.StyledCellLabelProvider#update(org.eclipse.jface.viewers.ViewerCell)
+		 */
+		public void update(ViewerCell cell) {
+			StyledString string = getStyledText(cell.getElement());
+			cell.setText(string.getString());
+			cell.setStyleRanges(string.getStyleRanges());
+			cell.setImage(getImage(cell.getElement()));
+			super.update(cell);
+		}
+
+		private StyledString getStyledText(Object element) {
+			StyledString styledString = new StyledString();
+			if (element instanceof ScmUrlImportDescription) {
+				ScmUrlImportDescription description = (ScmUrlImportDescription) element;
+				String project = description.getProject();
+				URI scmUrl = description.getUri();
+				String version = getTag(scmUrl);
+				String host = getServer(scmUrl);
+				styledString.append(project);
+				if (version != null) {
+					styledString.append(' ');
+					styledString.append(version, StyledString.DECORATIONS_STYLER);
+				}
+				styledString.append(' ');
+				styledString.append('[', StyledString.DECORATIONS_STYLER);
+				styledString.append(host, StyledString.DECORATIONS_STYLER);
+				styledString.append(']', StyledString.DECORATIONS_STYLER);
+				return styledString;
+			}
+			styledString.append(element.toString());
+			return styledString;
+		}
+	}
+
+	/**
+	 * Constructs the page.
+	 */
+	public GitScmUrlImportWizardPage() {
+		super("git", UIText.GitScmUrlImportWizardPage_title, null); //$NON-NLS-1$
+		setDescription(UIText.GitScmUrlImportWizardPage_description);
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
+	 */
+	public void createControl(Composite parent) {
+		Composite comp = SWTUtils.createHVFillComposite(parent, SWTUtils.MARGINS_NONE, 1);
+		Composite group = SWTUtils.createHFillComposite(comp, SWTUtils.MARGINS_NONE, 1);
+
+		Button versions = SWTUtils.createRadioButton(group,
+				UIText.GitScmUrlImportWizardPage_importVersion);
+		useMaster = SWTUtils.createRadioButton(group,
+				UIText.GitScmUrlImportWizardPage_importMaster);
+		SelectionListener listener = new SelectionAdapter() {
+			public void widgetSelected(SelectionEvent e) {
+				bundlesViewer.refresh(true);
+			}
+		};
+		versions.addSelectionListener(listener);
+		useMaster.addSelectionListener(listener);
+
+		Table table = new Table(comp, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
+		GridData gd = new GridData(GridData.FILL_BOTH);
+		gd.heightHint = 200;
+		gd.widthHint = 225;
+		table.setLayoutData(gd);
+
+		bundlesViewer = new TableViewer(table);
+		bundlesViewer.setLabelProvider(new GitLabelProvider());
+		bundlesViewer.setContentProvider(new ArrayContentProvider());
+		bundlesViewer.setComparator(new ViewerComparator());
+		counterLabel = new Label(comp, SWT.NONE);
+		counterLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
+		setControl(comp);
+		setPageComplete(true);
+
+		// Initialize versions versus master
+		// TODO: temporarily disabled, until bug 367712 is fixed
+		// IDialogSettings settings = getWizard().getDialogSettings();
+		// boolean useHEAD = settings != null
+		//		&& settings.getBoolean(GIT_PAGE_USE_MASTER);
+		// useHead.setSelection(useHEAD);
+		// versions.setSelection(!useHEAD);
+		useMaster.setSelection(true);
+		versions.setEnabled(false);
+
+		if (descriptions != null) {
+			bundlesViewer.setInput(descriptions);
+			updateCount();
+		}
+
+	}
+
+	public boolean finish() {
+		boolean head = false;
+		if (getControl() != null) {
+			head = useMaster.getSelection();
+			// store settings
+			IDialogSettings settings = getWizard().getDialogSettings();
+			if (settings != null)
+				settings.put(GIT_PAGE_USE_MASTER, head);
+		} else {
+			// use whatever was used last time
+			IDialogSettings settings = getWizard().getDialogSettings();
+			if (settings != null)
+				head = settings.getBoolean(GIT_PAGE_USE_MASTER);
+		}
+
+		if (head && descriptions != null)
+			// modify tags on bundle import descriptions
+			for (int i = 0; i < descriptions.length; i++) {
+				URI scmUri = descriptions[i].getUri();
+				descriptions[i].setUrl(removeTag(scmUri));
+			}
+
+		return true;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.ui.IScmUrlImportWizardPage#getSelection()
+	 */
+	public ScmUrlImportDescription[] getSelection() {
+		return descriptions;
+	}
+
+	public void setSelection(ScmUrlImportDescription[] descriptions) {
+		this.descriptions = descriptions;
+		// fill viewer
+		if (bundlesViewer != null) {
+			bundlesViewer.setInput(descriptions);
+			updateCount();
+		}
+	}
+
+	/**
+	 * Updates the count of bundles that will be imported
+	 */
+	private void updateCount() {
+		counterLabel.setText(NLS.bind(UIText.GitScmUrlImportWizardPage_counter,
+				Integer.valueOf(descriptions.length)));
+		counterLabel.getParent().layout();
+	}
+
+	private static String getTag(URI scmUri) {
+		GitURI gitURI = new GitURI(scmUri);
+		return gitURI.getTag();
+	}
+
+	/**
+	 * Remove tag attributes from the given URI reference. Results in the URI
+	 * pointing to HEAD.
+	 *
+	 * @param scmUri
+	 *            a SCM URI reference to modify
+	 * @return Returns the content of the stripped URI as a string.
+	 */
+	private static String removeTag(URI scmUri) {
+		StringBuffer sb = new StringBuffer();
+		sb.append(scmUri.getScheme()).append(':');
+		String ssp = scmUri.getSchemeSpecificPart();
+		int j = ssp.indexOf(';');
+		if (j != -1) {
+			sb.append(ssp.substring(0, j));
+			String[] params = ssp.substring(j).split(";"); //$NON-NLS-1$
+			for (int k = 0; k < params.length; k++)
+				// PDE way of providing tags
+				if (params[k].startsWith("tag=")) { //$NON-NLS-1$
+					// ignore
+				} else if (params[k].startsWith("version=")) { //$NON-NLS-1$
+					// ignore
+				} else if (params[k]!=null && !params[k].equals("")) //$NON-NLS-1$
+					sb.append(";").append(params[k]); //$NON-NLS-1$
+		} else
+			sb.append(ssp);
+		return sb.toString();
+	}
+
+	private static String getServer(URI scmUri) {
+		GitURI gitURI = new GitURI(scmUri);
+		return gitURI.getRepository().toString();
+	}
+}
diff --git a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/uitext.properties b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/uitext.properties
index de17338434..5cdfc96147 100644
--- a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/uitext.properties
+++ b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/uitext.properties
@@ -1676,3 +1676,9 @@ RepositoryStatistics_PackedObjects=Packed objects
 
 GitModelSynchronizeParticipant_initialScopeName=Git
 GitModelSynchronizeParticipant_noCachedSourceVariant=Could not locate cached source variant for resource: {0}
+
+GitScmUrlImportWizardPage_title=Import Projects from Git
+GitScmUrlImportWizardPage_description=Import Git projects corresponding to plug-ins and fragments in the file system.
+GitScmUrlImportWizardPage_importMaster=Import from &master
+GitScmUrlImportWizardPage_importVersion=Import the indicated &version
+GitScmUrlImportWizardPage_counter=Total: {0}
\ No newline at end of file