Android Open Source - geoar-app Data Source Instance Settings Dialog Activity

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License

The source code is released under:

Apache License

Java Source Code

/**
 * Copyright 2012 52North Initiative for Geospatial Open Source Software GmbH
 *//from w w  w.j a  va2 s. c o  m
 * 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 org.n52.geoar.newdata;

import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.n52.geoar.R;
import org.n52.geoar.settings.SettingsView;

import android.app.Activity;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.actionbarsherlock.app.SherlockActivity;

/**
 * Activity to set data source instance settings and its filter settings. Also
 * responsible for updating the data source instance.
 * 
 */
public class DataSourceInstanceSettingsDialogActivity extends SherlockActivity {

  public abstract static class SettingsResultListener implements Parcelable {
    private static List<WeakReference<SettingsResultListener>> instances = new ArrayList<WeakReference<SettingsResultListener>>();
    private int id = nextId++;
    private static int nextId = 0;

    public static final Parcelable.Creator<SettingsResultListener> CREATOR = new Parcelable.Creator<SettingsResultListener>() {
      @Override
      public SettingsResultListener createFromParcel(Parcel in) {
        int id = in.readInt();
        // Find SettingsResultListener with provided id
        Iterator<WeakReference<SettingsResultListener>> it = SettingsResultListener.instances
            .iterator();
        while (it.hasNext()) {
          WeakReference<SettingsResultListener> next = it.next();
          if (next.get() == null) {
            it.remove();
          } else if (next.get().id == id) {
            return next.get();
          }
        }
        return null;
      }

      @Override
      public SettingsResultListener[] newArray(int size) {
        return new SettingsResultListener[size];
      }
    };

    public SettingsResultListener() {
      instances.add(new WeakReference<SettingsResultListener>(this));
    }

    abstract void onSettingsResult(int resultCode);

    @Override
    public int describeContents() {
      return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
      dest.writeInt(id);
    }
  }

  private SettingsResultListener resultListener;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_datasourceinstance_dialog);

    final SettingsView generalSettingsView = (SettingsView) findViewById(R.id.settingsViewGeneral);
    final SettingsView filterSettingsView = (SettingsView) findViewById(R.id.settingsViewFilter);

    final DataSourceInstanceHolder dataSourceInstance = getIntent()
        .getParcelableExtra("dataSourceInstance");
    resultListener = getIntent().getParcelableExtra("resultListener");
    generalSettingsView.setStringsContext(dataSourceInstance.getParent()
        .getPluginHolder().getPluginContext());
    filterSettingsView.setStringsContext(dataSourceInstance.getParent()
        .getPluginHolder().getPluginContext());

    generalSettingsView.setSettingsObject(dataSourceInstance
        .getDataSource());
    filterSettingsView.setSettingsObject(dataSourceInstance
        .getCurrentFilter());

    if (generalSettingsView.isEmpty()) {
      findViewById(R.id.textViewGroupGeneral).setVisibility(View.GONE);
    }
    if (filterSettingsView.isEmpty()) {
      findViewById(R.id.textViewGroupFilter).setVisibility(View.GONE);
    }

    Button cancelButton = (Button) findViewById(R.id.negativeButton);
    cancelButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View arg0) {
        setDialogResult(RESULT_CANCELED);
        finish();
      }
    });

    Button okButton = (Button) findViewById(R.id.positiveButton);
    okButton.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View arg0) {
        if (generalSettingsView.validate()
            && filterSettingsView.validate()) {
          generalSettingsView.updateObject();
          filterSettingsView.updateObject();
          setDialogResult(RESULT_OK);
          finish();
        }
      }
    });
  }

  /**
   * Should be used instead of {@link Activity#setResult(int)} to use a passed
   * {@link SettingsResultListener}
   * 
   * @param resultCode
   */
  private void setDialogResult(int resultCode) {
    setResult(resultCode);
    if (resultListener != null) {
      resultListener.onSettingsResult(resultCode);
    }
  }

}

Java Source Code List

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