Android Open Source - HydraListAndroid Basic Expandable List Item

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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2013 The Android Open Source Project
 * //from www .j  av  a2s. 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 com.fada21.android.hydralist.expandable;

import com.fada21.android.hydralist.expandable.interfaces.ExpandableListItem;
import com.fada21.android.hydralist.expandable.interfaces.OnSizeChangedListener;

/**
 * <p>
 * This custom object is used to populate the list adapter. It contains a reference to an image, title, and the extra text to be displayed. Furthermore, it
 * keeps track of the current state (collapsed/expanded) of the corresponding item in the list, as well as store the height of the cell in its collapsed state.
 * </p>
 * <p>
 * It should also state if item is expandable with method {@link #isExpandable()}.
 * </p>
 */
public abstract class BasicExpandableListItem implements ExpandableListItem {

  private int mCollapsedHeight;
  private boolean mIsExpandable;
  private boolean mIsExpanded;
  private int mExpandedHeight;

  private final OnSizeChangedListener mOnSizeCHangeListener;

  public BasicExpandableListItem(int defaultCollapsedHeight, boolean isExpandable) {
    mCollapsedHeight = defaultCollapsedHeight;
    mIsExpandable = isExpandable;
    mIsExpanded = false;
    mExpandedHeight = -1;
    mOnSizeCHangeListener = initOnSizeChangeListener();
  }

  private OnSizeChangedListener initOnSizeChangeListener() {
    return new OnSizeChangedListener() {

      @Override
      public void onSizeChanged(int newHeight) {
        setExpandedHeight(newHeight);
      }
    };
  }

  @Override
  public int getCollapsedHeight() {
    return mCollapsedHeight;
  }

  @Override
  public void setCollapsedHeight(int collapsedHeight) {
    mCollapsedHeight = collapsedHeight;
  }

  @Override
  public boolean isExpandable() {
    return mIsExpandable;
  }

  @Override
  public void setExpandable(boolean isExpandable) {
    mIsExpandable = isExpandable;
  }

  @Override
  public boolean isExpanded() {
    return mIsExpanded;
  }

  @Override
  public void setExpanded(boolean isExpanded) {
    mIsExpanded = isExpanded;
  }

  @Override
  public int getExpandedHeight() {
    return mExpandedHeight;
  }

  @Override
  public void setExpandedHeight(int expandedHeight) {
    mExpandedHeight = expandedHeight;
  }

  public OnSizeChangedListener getOnSizeChangedListener() {
    return mOnSizeCHangeListener;
  }

}

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