content: /*
   * Copyright (C) 2011 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.amnesica.kryptey.inputmethod.latin.utils;
  
  import android.view.View;
  import android.view.ViewGroup;
  import android.view.ViewGroup.MarginLayoutParams;
  import android.view.Window;
  import android.view.WindowManager;
  import android.widget.FrameLayout;
  import android.widget.LinearLayout;
  import android.widget.RelativeLayout;
  
  public final class ViewLayoutUtils {
    private ViewLayoutUtils() {
      // This utility class is not publicly instantiable.
    }
  
    public static MarginLayoutParams newLayoutParam(final ViewGroup placer, final int width,
                                                    final int height) {
      if (placer instanceof FrameLayout) {
        return new FrameLayout.LayoutParams(width, height);
      } else if (placer instanceof RelativeLayout) {
        return new RelativeLayout.LayoutParams(width, height);
      } else if (placer == null) {
        throw new NullPointerException("placer is null");
      } else {
        throw new IllegalArgumentException("placer is neither FrameLayout nor RelativeLayout: "
            + placer.getClass().getName());
      }
    }
  
    public static void placeViewAt(final View view, final int x, final int y, final int w,
                                   final int h) {
      final ViewGroup.LayoutParams lp = view.getLayoutParams();
      if (lp instanceof MarginLayoutParams) {
        final MarginLayoutParams marginLayoutParams = (MarginLayoutParams) lp;
        marginLayoutParams.width = w;
        marginLayoutParams.height = h;
        marginLayoutParams.setMargins(x, y, -50, 0);
      }
    }
  
    public static void updateLayoutHeightOf(final Window window, final int layoutHeight) {
      final WindowManager.LayoutParams params = window.getAttributes();
      if (params != null && params.height != layoutHeight) {
        params.height = layoutHeight;
        window.setAttributes(params);
      }
    }
  
    public static void updateLayoutHeightOf(final View view, final int layoutHeight) {
      final ViewGroup.LayoutParams params = view.getLayoutParams();
      if (params != null && params.height != layoutHeight) {
        params.height = layoutHeight;
        view.setLayoutParams(params);
      }
    }
  
    public static void updateLayoutGravityOf(final View view, final int layoutGravity) {
      final ViewGroup.LayoutParams lp = view.getLayoutParams();
      if (lp instanceof LinearLayout.LayoutParams) {
        final LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) lp;
        if (params.gravity != layoutGravity) {
          params.gravity = layoutGravity;
          view.setLayoutParams(params);
        }
      } else if (lp instanceof FrameLayout.LayoutParams) {
        final FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) lp;
        if (params.gravity != layoutGravity) {
          params.gravity = layoutGravity;
          view.setLayoutParams(params);
        }
      } else {
        throw new IllegalArgumentException("Layout parameter doesn't have gravity: "
            + lp.getClass().getName());
      }
    }
  }
  