AttrDescView_view_View_layout_gravity.java

package org.itsnat.droid.impl.xmlinflater.layout.attr.view;

import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.GridLayout;
import android.widget.LinearLayout;

import org.itsnat.droid.impl.dom.DOMAttr;
import org.itsnat.droid.impl.xmlinflater.layout.AttrLayoutContext;
import org.itsnat.droid.impl.xmlinflater.layout.PendingViewPostCreateProcess;
import org.itsnat.droid.impl.xmlinflater.layout.PendingViewPostCreateProcessChildGridLayout;
import org.itsnat.droid.impl.xmlinflater.layout.attr.GridLayout_columnSpec;
import org.itsnat.droid.impl.xmlinflater.layout.attr.GridLayout_rowSpec;
import org.itsnat.droid.impl.xmlinflater.layout.classtree.ClassDescViewBased;
import org.itsnat.droid.impl.xmlinflater.shared.GravityUtil;
import org.itsnat.droid.impl.xmlinflater.shared.attr.AttrDesc;

/**
 * Created by jmarranz on 30/04/14.
 */
public class AttrDescView_view_View_layout_gravity extends AttrDesc<ClassDescViewBased,View,AttrLayoutContext>
{
    public AttrDescView_view_View_layout_gravity(ClassDescViewBased parent)
    {
        super(parent,"layout_gravity");
    }

    @Override
    public void setAttribute(final View view, DOMAttr attr, AttrLayoutContext attrCtx)
    {
        final int valueInt = parseMultipleName(attr.getValue(), GravityUtil.nameValueMap);

        final PendingViewPostCreateProcess pendingViewPostCreateProcess = attrCtx.getPendingViewPostCreateProcess();

        Runnable task = new Runnable(){
            @Override
            public void run()
            {
                // Objetos LayoutParams diferentes pero mismos valores: http://developer.android.com/reference/android/R.attr.html#layout_gravity
                ViewGroup.LayoutParams params = view.getLayoutParams();
                if (params instanceof LinearLayout.LayoutParams)
                    ((LinearLayout.LayoutParams)params).gravity = valueInt;
                else if (params instanceof FrameLayout.LayoutParams)
                    ((FrameLayout.LayoutParams)params).gravity = valueInt;
                else if (params instanceof GridLayout.LayoutParams)
                {
                    if (pendingViewPostCreateProcess != null)
                    {
                        PendingViewPostCreateProcessChildGridLayout pendingViewPostCreateProcessGrid = (PendingViewPostCreateProcessChildGridLayout) pendingViewPostCreateProcess;
                        if (pendingViewPostCreateProcessGrid.gridLayout_columnSpec == null) pendingViewPostCreateProcessGrid.gridLayout_columnSpec = new GridLayout_columnSpec();
                        if (pendingViewPostCreateProcessGrid.gridLayout_rowSpec == null)    pendingViewPostCreateProcessGrid.gridLayout_rowSpec = new GridLayout_rowSpec();

                        pendingViewPostCreateProcessGrid.gridLayout_columnSpec.layout_gravity = valueInt;
                        pendingViewPostCreateProcessGrid.gridLayout_rowSpec.layout_gravity = valueInt;
                    }
                    else
                    {
                        ((GridLayout.LayoutParams)params).setGravity(valueInt);
                    }
                }
            }};

        if (pendingViewPostCreateProcess != null)
        {
            pendingViewPostCreateProcess.addPendingLayoutParamsTask(task);
        }
        else
        {
            task.run();
            PendingViewPostCreateProcess.onChangedLayoutParams(view);
        }

    }

    @Override
    public void removeAttribute(View view, AttrLayoutContext attrCtx)
    {
        ViewGroup.LayoutParams params = view.getLayoutParams();
        if (params instanceof LinearLayout.LayoutParams)
            ((LinearLayout.LayoutParams)params).gravity = Gravity.LEFT;
        else if (params instanceof FrameLayout.LayoutParams)
            ((FrameLayout.LayoutParams)params).gravity = Gravity.LEFT;
        else if (params instanceof GridLayout.LayoutParams)
            ((GridLayout.LayoutParams)params).setGravity(Gravity.LEFT); // La doc habla también de un BASELINE pero no lo encuentro como Gravity

        PendingViewPostCreateProcess.onChangedLayoutParams(view);
    }
}