New UI for Find command: find-as-you-type.

editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/internal/ui/panels/SearchStatusLine.java

+/*******************************************************************************
+ * Copyright (c) 2012 xored software, Inc. 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:
+ * xored software, Inc. - initial API and implementation (Yuri Strot)
+ ******************************************************************************/
+package com.xored.glance.internal.ui.panels;
+
+import com.xored.glance.ui.panels.SearchPanel;
+import com.xored.glance.ui.sources.Match;
+import com.xored.glance.ui.utils.UIUtils;
+
+import org.eclipse.jface.action.ContributionItem;
+import org.eclipse.jface.action.IContributionItem;
+import org.eclipse.jface.action.IStatusLineManager;
+import org.eclipse.jface.action.StatusLineLayoutData;
+import org.eclipse.jface.action.StatusLineManager;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.custom.CLabel;
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.events.FocusEvent;
+import org.eclipse.swt.events.FocusListener;
+import org.eclipse.swt.graphics.Image;
+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.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.internal.WorkbenchWindow;
+import org.eclipse.ui.keys.IBindingService;
+import org.eclipse.ui.texteditor.IStatusField;
+import org.eclipse.ui.texteditor.IStatusFieldExtension;
+
+/**
+ * @author Yuri Strot
+ */
+@SuppressWarnings("restriction")
+public class SearchStatusLine extends SearchPanel {
+
+  private class SearchItem extends ContributionItem implements IStatusField, IStatusFieldExtension {
+
+    @Override
+    public void dispose() {
+      try {
+        fireClose();
+      } catch (SWTException ex) {
+        // ignore it -- window closing
+      }
+    }
+
+    @Override
+    public void fill(Composite parent) {
+      Label separator = new Label(parent, SWT.SEPARATOR);
+      createContent(parent);
+      setLayoutData(separator);
+    }
+
+    public SearchStatusLine getSearchPanel() {
+      return SearchStatusLine.this;
+    }
+
+    @Override
+    public void setErrorImage(Image image) {
+      setImage(image);
+    }
+
+    @Override
+    public void setErrorText(String text) {
+      setText(text);
+    }
+
+    @Override
+    public void setImage(Image image) {
+    }
+
+    @Override
+    public void setText(String text) {
+    }
+
+    @Override
+    public void setToolTipText(String string) {
+      setText(string);
+    }
+
+  }
+
+  private static final String DEFAULT_MATCH_LABEL = "no matches";
+
+  public static SearchStatusLine getSearchLine(IWorkbenchWindow window) {
+    IStatusLineManager manager = getManager(window);
+    if (manager != null) {
+      IContributionItem[] items = manager.getItems();
+      for (IContributionItem item : items) {
+        if (item instanceof SearchItem) {
+          return ((SearchItem) item).getSearchPanel();
+        }
+      }
+    }
+    return new SearchStatusLine(window);
+  }
+
+  public static IWorkbenchWindow getWindow(Control control) {
+    Shell shell = control.getShell();
+    IWorkbenchWindow[] windows = PlatformUI.getWorkbench().getWorkbenchWindows();
+    for (IWorkbenchWindow window : windows) {
+      if (shell.equals(window.getShell())) {
+        return window;
+      }
+    }
+    return null;
+  }
+
+  private static IStatusLineManager getManager(IWorkbenchWindow window) {
+    if (window != null) {
+      WorkbenchWindow ww = (WorkbenchWindow) window;
+      return ww.getActionBars().getStatusLineManager();
+    }
+    return null;
+  }
+
+  private int matchCount;
+  private String matchText = DEFAULT_MATCH_LABEL;
+  private CLabel matchLabel;
+  private SearchItem item;
+  private final IWorkbenchWindow window;
+
+  private SearchStatusLine(IWorkbenchWindow window) {
+    this.window = window;
+    init();
+  }
+
+  @Override
+  public void allFound(final Match[] matches) {
+    super.allFound(matches);
+    matchCount = matches.length;
+    updateInfo();
+  }
+
+  @Override
+  public void closePanel() {
+    if (item != null) {
+      fireClose();
+      IStatusLineManager manager = getManager();
+      if (manager != null) {
+        manager.remove(item);
+        manager.update(false);
+      }
+      item = null;
+    }
+  }
+
+  @Override
+  public void createContent(Composite parent) {
+    super.createContent(parent);
+    StatusLineLayoutData data = new StatusLineLayoutData();
+    data.widthHint = getPreferedWidth();
+    data.heightHint = getPreferredHeight();
+    getControl().setLayoutData(data);
+    createMatchLabel(parent);
+  }
+
+  public IWorkbenchWindow getWindow() {
+    return window;
+  }
+
+  @Override
+  public boolean isApplicable(Control control) {
+    return window.equals(getWindow(control));
+  }
+
+  @Override
+  protected Control createText(Composite parent, int style) {
+    Control textControl = super.createText(parent, style);
+    textControl.addFocusListener(new FocusListener() {
+      @Override
+      public void focusGained(FocusEvent e) {
+        setKeyFilter(false);
+      }
+
+      @Override
+      public void focusLost(FocusEvent e) {
+        setKeyFilter(true);
+      }
+    });
+    textControl.addDisposeListener(new DisposeListener() {
+      @Override
+      public void widgetDisposed(DisposeEvent e) {
+        setKeyFilter(true);
+      }
+    });
+    return textControl;
+  }
+
+  protected void setKeyFilter(boolean enabled) {
+    IBindingService service = (IBindingService) PlatformUI.getWorkbench().getService(
+        IBindingService.class);
+    if (service != null) {
+      service.setKeyFilterEnabled(enabled);
+    }
+  }
+
+  @Override
+  protected void textEmpty() {
+    super.textEmpty();
+    matchText = DEFAULT_MATCH_LABEL;
+    matchLabel.setText(matchText);
+  }
+
+  private void createMatchLabel(Composite parent) {
+    Label separator = new Label(parent, SWT.SEPARATOR);
+    setLayoutData(separator);
+    matchLabel = new CLabel(parent, SWT.SHADOW_NONE);
+    StatusLineLayoutData data = new StatusLineLayoutData();
+    data.widthHint = getTextWidth(parent, 10) + 15;
+    data.heightHint = getPreferredHeight();
+    matchLabel.setLayoutData(data);
+    matchLabel.setText(matchText);
+  }
+
+  private IStatusLineManager getManager() {
+    return getManager(window);
+  }
+
+  private void init() {
+    item = new SearchItem();
+    IStatusLineManager manager = getManager();
+    if (manager != null) {
+      manager.remove(item);
+      manager.appendToGroup(StatusLineManager.BEGIN_GROUP, item);
+      manager.update(true);
+    }
+  }
+
+  private void setLayoutData(Label separator) {
+    StatusLineLayoutData data = new StatusLineLayoutData();
+    data.heightHint = getPreferredHeight();
+    separator.setLayoutData(data);
+  }
+
+  private void updateInfo() {
+    StringBuffer buffer = new StringBuffer();
+
+    if (matchCount == 0) {
+      buffer.append(DEFAULT_MATCH_LABEL);
+    } else {
+      buffer.append(matchCount);
+    }
+
+    matchText = buffer.toString();
+    UIUtils.asyncExec(matchLabel, new Runnable() {
+
+      @Override
+      public void run() {
+        matchLabel.setText(matchText);
+      }
+    });
+  }
+
+}