Android Open Source - Kite Kite

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License

The source code is released under:

Apache License

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Java Source Code

/**
 * //from  w  w w . ja  v a  2  s .com
 */
package com.efurture.kite;

import android.text.TextUtils;
import android.view.View;
import android.view.ViewGroup;

import com.efurture.kite.expression.Evaluator;
import com.efurture.kite.expression.EvaluatorManager;
import com.efurture.kite.layout.LayoutExtension;

/**
 * give you powerful layout extension via android:tag or android:contentDescription attribute.
 * <br/>
 * <br/>
 * Demo Usage:
 * <br/>
 * <br/>
 * {@code
 *  <View
 *  android:id="@+id/textview"
 *  android:contentDescription='{"height":"width*0.333 + 2*66 + 0.5*screen_width"}'/>
 *  }
 * <br/>
 * <br/>
 * {@code
 *  <View
 *  android:id="@+id/view"
 *  android:tag='{"height":"width*0.333 + 2*66 + 0.5*screen_width"}'/>
 * }
 * <br/>
 * <br/>
 * make layout effect via Kite:
 * <br/>
 * <br/>
 * {@code
 *   Kite.layout(findViewById(R.id.view)); 
 * }
 * 
 * @author gubaojian   email: gubaojian@163.com
 *  */
public class Kite {
    
  /**
   *  layout view and view's subview
   *  @param view                    target view
   * */
  public static void layout(View view){
    layout(view, true);
  } 
  
  /**
   * layout view and view's subview, when layout complete, call OnFinishLayoutListener
   * @param view                    target view
   * @param finishLayoutListener    layout complete listener
   * */
  public static void layout(View view, OnFinishLayoutListener finishLayoutListener){
     layout(view, finishLayoutListener, true);  
  }

  /**
   * layout view
   * @param view                 target view
   * @param tranverse            whether tranverse view's subview and layout them
   * */
  public static void layout(View view, boolean tranverse){
    layout(view, null, tranverse);
  }

  /**
   * layout view
   * @param view                 target view
   * @param layoutFinishListener layout complete listener, called when layout complete
   * @param tranverse            whether tranverse view's subview and layout them
   * */
    public static void layout(View view, OnFinishLayoutListener layoutFinishListener, boolean tranverse){
          if (view.getTag() != null) {
      LayoutExtension.layout(view, view.getTag(), layoutFinishListener);
    }
    if (!TextUtils.isEmpty(view.getContentDescription())) {
      LayoutExtension.layout(view, view.getContentDescription(), layoutFinishListener);
    }
    if (tranverse) {
      if (view instanceof ViewGroup) {
         ViewGroup root = (ViewGroup) view;
         int count = root.getChildCount();
         for(int i=0; i<count; i++){
           layout(root.getChildAt(i), layoutFinishListener, tranverse); 
         }
      }
    }
  }
    
    /**
     * customer default math expression Evaluator.
     * @param defaultEvaluator  default math expression evaluator
   * */
    public static void setDefaultEvaluator(Evaluator defaultEvaluator){
          EvaluatorManager.setDefaultEvaluator(defaultEvaluator);
    }
}

Java Source Code List