1 files changed, 226 insertions, 0 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/breadcrumb/BreadcrumbItem.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/breadcrumb/BreadcrumbItem.java
new file mode 100644
index 000000000..d70e7aa92
--- /dev/null
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/viewers/breadcrumb/BreadcrumbItem.java
@@ -0,0 +1,226 @@
+/*******************************************************************************
+ * Copyright (c) 2008, 2009 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *     Pawel Piech (Wind River) - adapted breadcrumb for use in Debug view (Bug 252677)
+ *******************************************************************************/
+package org.eclipse.debug.internal.ui.viewers.breadcrumb;
+
+import org.eclipse.jface.viewers.TreePath;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Item;
+import org.eclipse.swt.widgets.Shell;
+
+
+/**
+ * An item in a breadcrumb viewer.
+ * <p>
+ * The item shows a label and an image. It also has the ability to expand, that is to open a drop
+ * down menu.
+ * </p>
+ * <p>
+ * The drop down allows to select any child of the items input element. The item shows the label and
+ * icon of its data element, if any.
+ * </p>
+ *
+ * @since 3.5
+ */
+class BreadcrumbItem extends Item {
+
+    private TreePath fPath;
+    
+	private final BreadcrumbViewer fParent;
+	private Composite fContainer;
+
+    private BreadcrumbItemDropDown fExpandBlock;
+    private BreadcrumbItemDetails fDetailsBlock;
+
+    private boolean fIsLast;
+
+	/**
+	 * A new breadcrumb item which is shown inside the given viewer.
+	 *
+	 * @param viewer the items viewer
+	 * @param parent the container containing the item
+	 */
+	public BreadcrumbItem(BreadcrumbViewer viewer, Composite parent) {
+		super(parent, SWT.NONE);
+
+		fParent= viewer;
+
+		fContainer= new Composite(parent, SWT.NONE);
+		fContainer.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
+		GridLayout layout= new GridLayout(2, false);
+		layout.marginBottom= 1;
+		layout.marginHeight= 0;
+		layout.marginWidth= 0;
+		layout.horizontalSpacing= 0;
+		fContainer.setLayout(layout);
+
+        fExpandBlock= new BreadcrumbItemDropDown(this, fContainer);
+		fDetailsBlock= new BreadcrumbItemDetails(this, fContainer);
+	}
+
+	/**
+	 * Returns this items viewer.
+	 *
+	 * @return the viewer showing this item
+	 */
+	public BreadcrumbViewer getViewer() {
+		return fParent;
+	}
+
+	/*
+	 * @see org.eclipse.swt.widgets.Widget#dispose()
+	 */
+	public void dispose() {
+		fContainer.dispose();
+		super.dispose();
+	}
+
+	public TreePath getPath() {
+	    return fPath;
+	}
+	
+	public void setPath(TreePath path) {
+	    fPath = path;
+	}
+	
+	/**
+	 * Should this item show a text label.
+	 *
+	 * @param enabled true if it should
+	 */
+	void setShowText(boolean enabled) {
+		fDetailsBlock.setTextVisible(enabled);
+	}
+
+	/**
+	 * Does this item show a text label?
+	 *
+	 * @return true if it does.
+	 */
+	boolean isShowText() {
+		return fDetailsBlock.isTextVisible();
+	}
+
+	/**
+	 * Returns the width of this item.
+	 *
+	 * @return the width of this item
+	 */
+	int getWidth() {
+		return fDetailsBlock.getWidth() + fExpandBlock.getWidth() + 2;
+	}
+
+	/**
+	 * Sets whether this item has to be marked as
+	 * selected or not.
+	 *
+	 * @param selected true if marked as selected
+	 */
+	void setSelected(boolean selected) {
+		fDetailsBlock.setSelected(selected);
+	}
+
+	/**
+	 * Sets whether this item has the keyboard focus.
+	 *
+	 * @param state <code>true</code> if it has focus, <code>false</code> otherwise
+	 */
+	void setFocus(boolean state) {
+		fDetailsBlock.setFocus(state);
+	}
+
+	/**
+	 * Returns whether this item has the keyboard focus.
+	 *
+	 * @return <code>true</code> if this item has the keyboard focus
+	 */
+	boolean hasFocus() {
+		return fDetailsBlock.hasFocus();
+	}
+
+	/**
+	 * Set whether this is the last item in the breadcrumb item chain or not.
+	 *
+	 * @param isLast <code>true</code> if this is the last item, <code>false</code> otherwise
+	 */
+	void setIsLastItem(boolean isLast) {
+		fIsLast= isLast;
+
+		GridData data= (GridData) fContainer.getLayoutData();
+		data.grabExcessHorizontalSpace= isLast;
+	}
+
+	/**
+	 * Expand this item, shows the drop down menu.
+	 */
+	void openDropDownMenu() {
+		fExpandBlock.showMenu();
+	}
+
+	/**
+	 * @return true if this item is expanded
+	 */
+	boolean isMenuShown() {
+		return fExpandBlock.isMenuShown();
+	}
+
+	/**
+	 * Returns the drop down shell.
+	 *
+	 * @return the shell of the drop down if shown, <code>null</code> otherwise
+	 */
+	Shell getDropDownShell() {
+		return fExpandBlock.getDropDownShell();
+	}
+
+	/**
+	 * Returns the bounds of this item.
+	 *
+	 * @return the bounds of this item
+	 */
+	public Rectangle getBounds() {
+		return fContainer.getBounds();
+	}
+
+	/**
+	 * Set the tool tip of the item to the given text.
+	 *
+	 * @param text the tool tip for the item
+	 */
+	public void setToolTip(String text) {
+		fDetailsBlock.setToolTip(text);
+	}
+
+	/*
+	 * @see org.eclipse.swt.widgets.Item#setText(java.lang.String)
+	 */
+	public void setText(String string) {
+		super.setText(string);
+		fDetailsBlock.setText(string);
+
+		//more or less space might be required for the label
+		if (fIsLast)
+			fContainer.layout(true, true);
+	}
+
+	/*
+	 * @see org.eclipse.swt.widgets.Item#setImage(org.eclipse.swt.graphics.Image)
+	 */
+	public void setImage(Image image) {
+		super.setImage(image);
+		fDetailsBlock.setImage(image);
+	}
+}