main/src/com/google/android/setupdesign/template/ProgressBarMixin.java - platform/external/setupdesign - Git at Google

 /*
  * Copyright (C) 2017 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.google.android.setupdesign.template;

 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
 import android.os.Build;
 import android.os.Build.VERSION_CODES;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewStub;
 import android.widget.ProgressBar;
 import androidx.annotation.AttrRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import com.google.android.setupcompat.internal.TemplateLayout;
 import com.google.android.setupcompat.template.Mixin;
 import com.google.android.setupdesign.R;
 import com.google.android.setupdesign.util.HeaderAreaStyler;
 import com.google.android.setupdesign.util.PartnerStyleHelper;

 /** A {@link Mixin} for showing a progress bar. */
 public class ProgressBarMixin implements Mixin {

   private final TemplateLayout templateLayout;
   private final boolean useBottomProgressBar;

   @Nullable private ColorStateList color;

   /** @param layout The layout this mixin belongs to. */
   public ProgressBarMixin(@NonNull TemplateLayout layout) {
     this(layout, null, 0);
   }

   /**
    * Constructor that allow using the bottom progress bar.
    *
    * @param layout The layout this mixin belongs to.
    * @param useBottomProgressBar Whether to use bottom progress
    */
   public ProgressBarMixin(@NonNull TemplateLayout layout, boolean useBottomProgressBar) {
     templateLayout = layout;
     this.useBottomProgressBar = useBottomProgressBar;
   }

   /**
    * Constructor that provide styled attribute information in this Context's theme.
    *
    * @param layout The {@link TemplateLayout} containing this mixin.
    * @param attrs XML attributes given to the layout.
    * @param defStyleAttr The default style attribute as given to the constructor of the layout.
    */
   public ProgressBarMixin(
       @NonNull TemplateLayout layout, AttributeSet attrs, @AttrRes int defStyleAttr) {
     templateLayout = layout;

     boolean useBottomProgressBar = false;
     if (attrs != null) {
       final TypedArray a =
           layout
               .getContext()
               .obtainStyledAttributes(attrs, R.styleable.SudProgressBarMixin, defStyleAttr, 0);

       if (a.hasValue(R.styleable.SudProgressBarMixin_sudUseBottomProgressBar)) {
         // Set whether we use bottom progress bar or not
         useBottomProgressBar =
             a.getBoolean(R.styleable.SudProgressBarMixin_sudUseBottomProgressBar, false);
       }

       a.recycle();

       // To avoid bottom progressbar bouncing, change the view state from GONE to INVISIBLE
       setShown(false);
     }

     this.useBottomProgressBar = useBottomProgressBar;
   }

   /** @return True if the progress bar is currently shown. */
   public boolean isShown() {
     final View progressBar =
         templateLayout.findManagedViewById(
             useBottomProgressBar ? R.id.sud_glif_progress_bar : R.id.sud_layout_progress);
     return progressBar != null && progressBar.getVisibility() == View.VISIBLE;
   }

   /**
    * Sets whether the progress bar is shown. If the progress bar has not been inflated from the
    * stub, this method will inflate the progress bar.
    *
    * @param shown True to show the progress bar, false to hide it.
    */
   public void setShown(boolean shown) {
     if (shown) {
       View progressBar = getProgressBar();
       if (progressBar != null) {
         progressBar.setVisibility(View.VISIBLE);
       }
     } else {
       View progressBar = peekProgressBar();
       if (progressBar != null) {
         progressBar.setVisibility(useBottomProgressBar ? View.INVISIBLE : View.GONE);
       }
     }
   }

   /**
    * Gets the progress bar in the layout. If the progress bar has not been used before, it will be
    * installed (i.e. inflated from its view stub).
    *
    * @return The progress bar of this layout. May be null only if the template used doesn't have a
    *     progress bar built-in.
    */
   private ProgressBar getProgressBar() {
     final View progressBarView = peekProgressBar();
     if (progressBarView == null && !useBottomProgressBar) {
       final ViewStub progressBarStub =
           (ViewStub) templateLayout.findManagedViewById(R.id.sud_layout_progress_stub);
       if (progressBarStub != null) {
         progressBarStub.inflate();
       }
       setColor(color);
     }
     return peekProgressBar();
   }

   /**
    * Gets the progress bar in the layout only if it has been installed. {@link #setShown(boolean)}
    * should be called before this to ensure the progress bar is set up correctly.
    *
    * @return The progress bar of this layout, or null if the progress bar is not installed. The null
    *     case can happen either if {@link #setShown(boolean)} with true was not called before this,
    *     or if the template does not contain a progress bar.
    */
   public ProgressBar peekProgressBar() {
     return (ProgressBar)
         templateLayout.findManagedViewById(
             useBottomProgressBar ? R.id.sud_glif_progress_bar : R.id.sud_layout_progress);
   }

   /** Sets the color of the indeterminate progress bar. This method is a no-op on SDK < 21. */
   public void setColor(@Nullable ColorStateList color) {
     this.color = color;
     if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
       final ProgressBar bar = peekProgressBar();
       if (bar != null) {
         bar.setIndeterminateTintList(color);
         if (Build.VERSION.SDK_INT >= VERSION_CODES.M || color != null) {
           // There is a bug in Lollipop where setting the progress tint color to null
           // will crash with "java.lang.NullPointerException: Attempt to invoke virtual
           // method 'int android.graphics.Paint.getAlpha()' on a null object reference"
           // at android.graphics.drawable.NinePatchDrawable.draw(:250)
           // The bug doesn't affect ProgressBar on M because it uses ShapeDrawable instead
           // of NinePatchDrawable. (commit 6a8253fdc9f4574c28b4beeeed90580ffc93734a)
           bar.setProgressBackgroundTintList(color);
         }
       }
     }
   }

   /**
    * @return The color previously set in {@link #setColor(ColorStateList)}, or null if the color is
    *     not set. In case of null, the color of the progress bar will be inherited from the theme.
    */
   @Nullable
   public ColorStateList getColor() {
     return color;
   }

   /**
    * Tries to apply the partner customizations to the progress bar. Use the default values if
    * partner config isn't enable.
    */
   public void tryApplyPartnerCustomizationStyle() {
     ProgressBar progressBar = peekProgressBar();
     if (!useBottomProgressBar || progressBar == null) {
       return;
     }

     boolean partnerHeavyThemeLayout = PartnerStyleHelper.isPartnerHeavyThemeLayout(templateLayout);

     if (partnerHeavyThemeLayout) {
       HeaderAreaStyler.applyPartnerCustomizationProgressBarStyle(progressBar);
     } else {
       Context context = progressBar.getContext();
       final ViewGroup.LayoutParams lp = progressBar.getLayoutParams();

       if (lp instanceof ViewGroup.MarginLayoutParams) {
         int marginTop =
             (int) context.getResources().getDimension(R.dimen.sud_progress_bar_margin_top);
         int marginBottom =
             (int) context.getResources().getDimension(R.dimen.sud_progress_bar_margin_bottom);

         final ViewGroup.MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) lp;
         mlp.setMargins(mlp.leftMargin, marginTop, mlp.rightMargin, marginBottom);
       }
     }
   }
 }
	/*
	* Copyright (C) 2017 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.google.android.setupdesign.template;

	import android.content.Context;
	import android.content.res.ColorStateList;
	import android.content.res.TypedArray;
	import android.os.Build;
	import android.os.Build.VERSION_CODES;
	import android.util.AttributeSet;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.ViewStub;
	import android.widget.ProgressBar;
	import androidx.annotation.AttrRes;
	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;
	import com.google.android.setupcompat.internal.TemplateLayout;
	import com.google.android.setupcompat.template.Mixin;
	import com.google.android.setupdesign.R;
	import com.google.android.setupdesign.util.HeaderAreaStyler;
	import com.google.android.setupdesign.util.PartnerStyleHelper;

	/** A {@link Mixin} for showing a progress bar. */
	public class ProgressBarMixin implements Mixin {

	private final TemplateLayout templateLayout;
	private final boolean useBottomProgressBar;

	@Nullable private ColorStateList color;

	/** @param layout The layout this mixin belongs to. */
	public ProgressBarMixin(@NonNull TemplateLayout layout) {
	this(layout, null, 0);
	}

	/**
	* Constructor that allow using the bottom progress bar.
	*
	* @param layout The layout this mixin belongs to.
	* @param useBottomProgressBar Whether to use bottom progress
	*/
	public ProgressBarMixin(@NonNull TemplateLayout layout, boolean useBottomProgressBar) {
	templateLayout = layout;
	this.useBottomProgressBar = useBottomProgressBar;
	}

	/**
	* Constructor that provide styled attribute information in this Context's theme.
	*
	* @param layout The {@link TemplateLayout} containing this mixin.
	* @param attrs XML attributes given to the layout.
	* @param defStyleAttr The default style attribute as given to the constructor of the layout.
	*/
	public ProgressBarMixin(
	@NonNull TemplateLayout layout, AttributeSet attrs, @AttrRes int defStyleAttr) {
	templateLayout = layout;

	boolean useBottomProgressBar = false;
	if (attrs != null) {
	final TypedArray a =
	layout
	.getContext()
	.obtainStyledAttributes(attrs, R.styleable.SudProgressBarMixin, defStyleAttr, 0);

	if (a.hasValue(R.styleable.SudProgressBarMixin_sudUseBottomProgressBar)) {
	// Set whether we use bottom progress bar or not
	useBottomProgressBar =
	a.getBoolean(R.styleable.SudProgressBarMixin_sudUseBottomProgressBar, false);
	}

	a.recycle();

	// To avoid bottom progressbar bouncing, change the view state from GONE to INVISIBLE
	setShown(false);
	}

	this.useBottomProgressBar = useBottomProgressBar;
	}

	/** @return True if the progress bar is currently shown. */
	public boolean isShown() {
	final View progressBar =
	templateLayout.findManagedViewById(
	useBottomProgressBar ? R.id.sud_glif_progress_bar : R.id.sud_layout_progress);
	return progressBar != null && progressBar.getVisibility() == View.VISIBLE;
	}

	/**
	* Sets whether the progress bar is shown. If the progress bar has not been inflated from the
	* stub, this method will inflate the progress bar.
	*
	* @param shown True to show the progress bar, false to hide it.
	*/
	public void setShown(boolean shown) {
	if (shown) {
	View progressBar = getProgressBar();
	if (progressBar != null) {
	progressBar.setVisibility(View.VISIBLE);
	}
	} else {
	View progressBar = peekProgressBar();
	if (progressBar != null) {
	progressBar.setVisibility(useBottomProgressBar ? View.INVISIBLE : View.GONE);
	}
	}
	}

	/**
	* Gets the progress bar in the layout. If the progress bar has not been used before, it will be
	* installed (i.e. inflated from its view stub).
	*
	* @return The progress bar of this layout. May be null only if the template used doesn't have a
	* progress bar built-in.
	*/
	private ProgressBar getProgressBar() {
	final View progressBarView = peekProgressBar();
	if (progressBarView == null && !useBottomProgressBar) {
	final ViewStub progressBarStub =
	(ViewStub) templateLayout.findManagedViewById(R.id.sud_layout_progress_stub);
	if (progressBarStub != null) {
	progressBarStub.inflate();
	}
	setColor(color);
	}
	return peekProgressBar();
	}

	/**
	* Gets the progress bar in the layout only if it has been installed. {@link #setShown(boolean)}
	* should be called before this to ensure the progress bar is set up correctly.
	*
	* @return The progress bar of this layout, or null if the progress bar is not installed. The null
	* case can happen either if {@link #setShown(boolean)} with true was not called before this,
	* or if the template does not contain a progress bar.
	*/
	public ProgressBar peekProgressBar() {
	return (ProgressBar)
	templateLayout.findManagedViewById(
	useBottomProgressBar ? R.id.sud_glif_progress_bar : R.id.sud_layout_progress);
	}

	/** Sets the color of the indeterminate progress bar. This method is a no-op on SDK < 21. */
	public void setColor(@Nullable ColorStateList color) {
	this.color = color;
	if (Build.VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
	final ProgressBar bar = peekProgressBar();
	if (bar != null) {
	bar.setIndeterminateTintList(color);
	if (Build.VERSION.SDK_INT >= VERSION_CODES.M \|\| color != null) {
	// There is a bug in Lollipop where setting the progress tint color to null
	// will crash with "java.lang.NullPointerException: Attempt to invoke virtual
	// method 'int android.graphics.Paint.getAlpha()' on a null object reference"
	// at android.graphics.drawable.NinePatchDrawable.draw(:250)
	// The bug doesn't affect ProgressBar on M because it uses ShapeDrawable instead
	// of NinePatchDrawable. (commit 6a8253fdc9f4574c28b4beeeed90580ffc93734a)
	bar.setProgressBackgroundTintList(color);
	}
	}
	}
	}

	/**
	* @return The color previously set in {@link #setColor(ColorStateList)}, or null if the color is
	* not set. In case of null, the color of the progress bar will be inherited from the theme.
	*/
	@Nullable
	public ColorStateList getColor() {
	return color;
	}

	/**
	* Tries to apply the partner customizations to the progress bar. Use the default values if
	* partner config isn't enable.
	*/
	public void tryApplyPartnerCustomizationStyle() {
	ProgressBar progressBar = peekProgressBar();
	if (!useBottomProgressBar \|\| progressBar == null) {
	return;
	}

	boolean partnerHeavyThemeLayout = PartnerStyleHelper.isPartnerHeavyThemeLayout(templateLayout);

	if (partnerHeavyThemeLayout) {
	HeaderAreaStyler.applyPartnerCustomizationProgressBarStyle(progressBar);
	} else {
	Context context = progressBar.getContext();
	final ViewGroup.LayoutParams lp = progressBar.getLayoutParams();

	if (lp instanceof ViewGroup.MarginLayoutParams) {
	int marginTop =
	(int) context.getResources().getDimension(R.dimen.sud_progress_bar_margin_top);
	int marginBottom =
	(int) context.getResources().getDimension(R.dimen.sud_progress_bar_margin_bottom);

	final ViewGroup.MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) lp;
	mlp.setMargins(mlp.leftMargin, marginTop, mlp.rightMargin, marginBottom);
	}
	}
	}
	}