/*
 * Copyright (C) 2007 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.ide.eclipse.ddms.preferences;

import com.android.ddmlib.Log.LogLevel;
import com.android.ddmuilib.logcat.LogCatMessageList;
import com.android.ddmuilib.logcat.LogCatPanel;
import com.android.ide.eclipse.base.InstallDetails;
import com.android.ide.eclipse.ddms.DdmsPlugin;
import com.android.ide.eclipse.ddms.LogCatMonitor;
import com.android.ide.eclipse.ddms.i18n.Messages;

import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.jface.preference.ComboFieldEditor;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.FontFieldEditor;
import org.eclipse.jface.preference.IntegerFieldEditor;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;

/**
 * Preference Pane for LogCat.
 */
public class LogCatPreferencePage extends FieldEditorPreferencePage implements
        IWorkbenchPreferencePage {
    private BooleanFieldEditor mSwitchPerspective;
    private ComboFieldEditor mWhichPerspective;
    private IntegerFieldEditor mMaxMessages;
    private BooleanFieldEditor mAutoMonitorLogcat;
    private ComboFieldEditor mAutoMonitorLogcatLevel;
    private BooleanFieldEditor mAutoScrollLock;

    public LogCatPreferencePage() {
        super(GRID);
        setPreferenceStore(DdmsPlugin.getDefault().getPreferenceStore());
    }

    @Override
    protected void createFieldEditors() {
        FontFieldEditor ffe = new FontFieldEditor(LogCatPanel.LOGCAT_VIEW_FONT_PREFKEY,
                Messages.LogCatPreferencePage_Display_Font, getFieldEditorParent());
        addField(ffe);

        mMaxMessages = new IntegerFieldEditor(
                LogCatMessageList.MAX_MESSAGES_PREFKEY,
                Messages.LogCatPreferencePage_MaxMessages, getFieldEditorParent());
        addField(mMaxMessages);

        mAutoScrollLock = new BooleanFieldEditor(LogCatPanel.AUTO_SCROLL_LOCK_PREFKEY,
                "Automatically enable/disable scroll lock based on the scrollbar position",
                getFieldEditorParent());
        addField(mAutoScrollLock);

        createHorizontalSeparator();

        if (InstallDetails.isAdtInstalled()) {
            createAdtSpecificFieldEditors();
        }
    }

    private void createHorizontalSeparator() {
        Label l = new Label(getFieldEditorParent(), SWT.SEPARATOR | SWT.HORIZONTAL);
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.horizontalSpan = 3;
        l.setLayoutData(gd);
    }

    private void createAdtSpecificFieldEditors() {
        mSwitchPerspective = new BooleanFieldEditor(PreferenceInitializer.ATTR_SWITCH_PERSPECTIVE,
                Messages.LogCatPreferencePage_Switch_Perspective, getFieldEditorParent());
        addField(mSwitchPerspective);
        IPerspectiveDescriptor[] perspectiveDescriptors =
                PlatformUI.getWorkbench().getPerspectiveRegistry().getPerspectives();
        String[][] perspectives = new String[0][0];
        if (perspectiveDescriptors.length > 0) {
            perspectives = new String[perspectiveDescriptors.length][2];
            for (int i = 0; i < perspectiveDescriptors.length; i++) {
                IPerspectiveDescriptor perspective = perspectiveDescriptors[i];
                perspectives[i][0] = perspective.getLabel();
                perspectives[i][1] = perspective.getId();
            }
        }
        mWhichPerspective = new ComboFieldEditor(PreferenceInitializer.ATTR_PERSPECTIVE_ID,
                Messages.LogCatPreferencePage_Switch_To, perspectives, getFieldEditorParent());
        mWhichPerspective.setEnabled(getPreferenceStore()
                .getBoolean(PreferenceInitializer.ATTR_SWITCH_PERSPECTIVE), getFieldEditorParent());
        addField(mWhichPerspective);

        createHorizontalSeparator();

        mAutoMonitorLogcat = new BooleanFieldEditor(LogCatMonitor.AUTO_MONITOR_PREFKEY,
                Messages.LogCatPreferencePage_AutoMonitorLogcat,
                getFieldEditorParent());
        addField(mAutoMonitorLogcat);

        mAutoMonitorLogcatLevel = new ComboFieldEditor(LogCatMonitor.AUTO_MONITOR_LOGLEVEL,
                Messages.LogCatPreferencePage_SessionFilterLogLevel,
                new String[][] {
                    { LogLevel.VERBOSE.toString(), LogLevel.VERBOSE.getStringValue() },
                    { LogLevel.DEBUG.toString(), LogLevel.DEBUG.getStringValue() },
                    { LogLevel.INFO.toString(), LogLevel.INFO.getStringValue() },
                    { LogLevel.WARN.toString(), LogLevel.WARN.getStringValue() },
                    { LogLevel.ERROR.toString(), LogLevel.ERROR.getStringValue() },
                    { LogLevel.ASSERT.toString(), LogLevel.ASSERT.getStringValue() },
                },
                getFieldEditorParent());
        mAutoMonitorLogcatLevel.setEnabled(
                getPreferenceStore().getBoolean(LogCatMonitor.AUTO_MONITOR_PREFKEY),
                getFieldEditorParent());
        addField(mAutoMonitorLogcatLevel);
    }

    @Override
    public void init(IWorkbench workbench) {
    }

    @Override
    public void propertyChange(PropertyChangeEvent event) {
        if (event.getSource().equals(mSwitchPerspective)) {
            mWhichPerspective.setEnabled(mSwitchPerspective.getBooleanValue(),
                    getFieldEditorParent());
        } else if (event.getSource().equals(mAutoMonitorLogcat)) {
            mAutoMonitorLogcatLevel.setEnabled(mAutoMonitorLogcat.getBooleanValue(),
                    getFieldEditorParent());
        }
    }

    @Override
    protected void performDefaults() {
        super.performDefaults();
        mWhichPerspective.setEnabled(mSwitchPerspective.getBooleanValue(), getFieldEditorParent());

        mMaxMessages.setStringValue(
                Integer.toString(LogCatMessageList.MAX_MESSAGES_DEFAULT));

        mAutoMonitorLogcatLevel.setEnabled(mAutoMonitorLogcat.getBooleanValue(),
                getFieldEditorParent());
    }
}