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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ddmuilib;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
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;
/**
* {@link FindDialog} provides a text box where users can enter text that should be
* searched for in the target editor/view. The buttons "Find Previous" and "Find Next"
* allow users to search forwards/backwards. This dialog simply provides a front end for the user
* and the actual task of searching is delegated to the {@link IFindTarget}.
*/
public class FindDialog extends Dialog {
private Label mStatusLabel;
private Button mFindNext;
private Button mFindPrevious;
private final IFindTarget mTarget;
private Text mSearchText;
private String mPreviousSearchText;
private final int mDefaultButtonId;
/** Id of the "Find Next" button */
public static final int FIND_NEXT_ID = IDialogConstants.CLIENT_ID;
/** Id of the "Find Previous button */
public static final int FIND_PREVIOUS_ID = IDialogConstants.CLIENT_ID + 1;
public FindDialog(Shell shell, IFindTarget target) {
this(shell, target, FIND_PREVIOUS_ID);
}
/**
* Construct a find dialog.
* @param shell shell to use
* @param target delegate to be invoked on user action
* @param defaultButtonId one of {@code #FIND_NEXT_ID} or {@code #FIND_PREVIOUS_ID}.
*/
public FindDialog(Shell shell, IFindTarget target, int defaultButtonId) {
super(shell);
mTarget = target;
mDefaultButtonId = defaultButtonId;
setShellStyle((getShellStyle() & ~SWT.APPLICATION_MODAL) | SWT.MODELESS);
setBlockOnOpen(true);
}
@Override
protected Control createDialogArea(Composite parent) {
Composite panel = new Composite(parent, SWT.NONE);
panel.setLayout(new GridLayout(2, false));
panel.setLayoutData(new GridData(GridData.FILL_BOTH));
Label lblMessage = new Label(panel, SWT.NONE);
lblMessage.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
lblMessage.setText("Find:");
mSearchText = new Text(panel, SWT.BORDER);
mSearchText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
mSearchText.addModifyListener(new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
boolean hasText = !mSearchText.getText().trim().isEmpty();
mFindNext.setEnabled(hasText);
mFindPrevious.setEnabled(hasText);
}
});
mStatusLabel = new Label(panel, SWT.NONE);
mStatusLabel.setForeground(getShell().getDisplay().getSystemColor(SWT.COLOR_DARK_RED));
GridData gd = new GridData();
gd.horizontalSpan = 2;
gd.grabExcessHorizontalSpace = true;
mStatusLabel.setLayoutData(gd);
return panel;
}
@Override
protected void createButtonsForButtonBar(Composite parent) {
createButton(parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, false);
mFindNext = createButton(parent, FIND_NEXT_ID, "Find Next",
mDefaultButtonId == FIND_NEXT_ID);
mFindPrevious = createButton(parent, FIND_PREVIOUS_ID, "Find Previous",
mDefaultButtonId != FIND_NEXT_ID);
mFindNext.setEnabled(false);
mFindPrevious.setEnabled(false);
}
@Override
protected void buttonPressed(int buttonId) {
if (buttonId == IDialogConstants.CLOSE_ID) {
close();
return;
}
if (buttonId == FIND_PREVIOUS_ID || buttonId == FIND_NEXT_ID) {
if (mTarget != null) {
String searchText = mSearchText.getText();
boolean newSearch = !searchText.equals(mPreviousSearchText);
mPreviousSearchText = searchText;
boolean searchForward = buttonId == FIND_NEXT_ID;
boolean hasMatches = mTarget.findAndSelect(searchText, newSearch, searchForward);
if (!hasMatches) {
mStatusLabel.setText("String not found");
mStatusLabel.pack();
} else {
mStatusLabel.setText("");
}
}
}
}
}
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