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/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
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package org.apache.cayenne.modeler.dialog.pref;

import java.awt.Component;
import java.util.HashMap;
import java.util.Map;
import java.util.prefs.Preferences;

import org.apache.cayenne.modeler.util.CayenneController;
import org.apache.cayenne.pref.CayennePreferenceEditor;
import org.apache.cayenne.pref.PreferenceEditor;
import org.apache.cayenne.swing.BindingBuilder;
import org.apache.cayenne.swing.ObjectBinding;

public class GeneralPreferences extends CayenneController {

    public static final String AUTO_LOAD_PROJECT_PREFERENCE = "autoLoadProject";
    public static final String DELETE_PROMPT_PREFERENCE = "deletePrompt";
    public static final String ENCODING_PREFERENCE = "encoding";

    protected GeneralPreferencesView view;
    protected CayennePreferenceEditor editor;

    protected boolean autoLoadProjectPreference;
    protected String encoding;
    protected boolean deletePromptPreference;

    protected Preferences preferences;

    protected ObjectBinding encodingBinding;
    protected ObjectBinding autoLoadProjectBinding;
    protected ObjectBinding deletePromptBinding;

    public GeneralPreferences(PreferenceDialog parentController) {
        super(parentController);
        this.view = new GeneralPreferencesView();

        PreferenceEditor editor = parentController.getEditor();
        if (editor instanceof CayennePreferenceEditor) {
            this.editor = (CayennePreferenceEditor) editor;
            this.view.setEnabled(true);
            initBindings();

            encodingBinding.updateView();
            autoLoadProjectBinding.updateView();
            deletePromptBinding.updateView();
        }
        else {
            this.view.setEnabled(false);
        }
    }

    public Component getView() {
        return view;
    }

    protected void initBindings() {
        // init model objects
        preferences = application.getPreferencesNode(GeneralPreferences.class, "");

        this.encoding = preferences.get(ENCODING_PREFERENCE, null);

        this.autoLoadProjectPreference = preferences.getBoolean(
                AUTO_LOAD_PROJECT_PREFERENCE,
                false);
        this.deletePromptPreference = preferences.getBoolean(
                DELETE_PROMPT_PREFERENCE,
                false);

        // build child controllers...
        EncodingSelector encodingSelector = new EncodingSelector(this, view
                .getEncodingSelector());

        // create bindings...
        BindingBuilder builder = new BindingBuilder(
                getApplication().getBindingFactory(),
                this);

        this.encodingBinding = builder.bindToProperty(
                encodingSelector,
                "encoding",
                EncodingSelector.ENCODING_PROPERTY_BINDING);

        this.autoLoadProjectBinding = builder.bindToCheckBox(
                view.getAutoLoadProject(),
                "autoLoadProject");

        this.deletePromptBinding = builder.bindToCheckBox(
                view.getDeletePrompt(),
                "deletePrompt");
    }

    public String getEncoding() {
        return encoding;
    }

    public void setEncoding(String encoding) {
        addChangedPreferences(ENCODING_PREFERENCE, encoding);
        this.encoding = encoding;
    }

    public boolean getAutoLoadProject() {
        return autoLoadProjectPreference;
    }

    public void setAutoLoadProject(boolean autoLoadProject) {

        addChangedBooleanPreferences(AUTO_LOAD_PROJECT_PREFERENCE, autoLoadProject);
        this.autoLoadProjectPreference = autoLoadProject;
    }

    public boolean getDeletePrompt() {
        return deletePromptPreference;
    }

    public void setDeletePrompt(boolean deletePrompt) {

        addChangedBooleanPreferences(DELETE_PROMPT_PREFERENCE, deletePrompt);
        this.deletePromptPreference = deletePrompt;
    }

    public void addChangedBooleanPreferences(String key, boolean value) {
        Map map = editor.getChangedBooleanPreferences().get(preferences);
        if (map == null) {
            map = new HashMap();
        }
        map.put(key, value);
        editor.getChangedBooleanPreferences().put(preferences, map);
    }

    public void addChangedPreferences(String key, String value) {
        Map map = editor.getChangedPreferences().get(preferences);
        if (map == null) {
            map = new HashMap();
        }
        map.put(key, value);
        editor.getChangedPreferences().put(preferences, map);
    }
}