diff options
Diffstat (limited to 'library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java')
-rw-r--r-- | library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java | 182 |
1 files changed, 85 insertions, 97 deletions
diff --git a/library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java b/library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java index 504b2f0..0e128c4 100644 --- a/library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java +++ b/library/main/src/com/android/setupwizardlib/template/ProgressBarMixin.java @@ -19,121 +19,109 @@ package com.android.setupwizardlib.template; import android.content.res.ColorStateList; import android.os.Build; import android.os.Build.VERSION_CODES; +import androidx.annotation.Nullable; import android.view.View; import android.view.ViewStub; import android.widget.ProgressBar; - -import androidx.annotation.Nullable; - import com.android.setupwizardlib.R; import com.android.setupwizardlib.TemplateLayout; -/** - * A {@link Mixin} for showing a progress bar. - */ +/** A {@link Mixin} for showing a progress bar. */ public class ProgressBarMixin implements Mixin { - private TemplateLayout mTemplateLayout; + private final TemplateLayout templateLayout; - @Nullable - private ColorStateList mColor; + @Nullable private ColorStateList color; - /** - * @param layout The layout this mixin belongs to. - */ - public ProgressBarMixin(TemplateLayout layout) { - mTemplateLayout = layout; - } + /** @param layout The layout this mixin belongs to. */ + public ProgressBarMixin(TemplateLayout layout) { + templateLayout = layout; + } - /** - * @return True if the progress bar is currently shown. - */ - public boolean isShown() { - final View progressBar = mTemplateLayout.findManagedViewById(R.id.suw_layout_progress); - return progressBar != null && progressBar.getVisibility() == View.VISIBLE; - } + /** @return True if the progress bar is currently shown. */ + public boolean isShown() { + final View progressBar = templateLayout.findManagedViewById(R.id.suw_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(View.GONE); - } - } + /** + * 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(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 progressBar = peekProgressBar(); - if (progressBar == null) { - final ViewStub progressBarStub = - (ViewStub) mTemplateLayout.findManagedViewById(R.id.suw_layout_progress_stub); - if (progressBarStub != null) { - progressBarStub.inflate(); - } - setColor(mColor); - } - return peekProgressBar(); + /** + * 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 progressBar = peekProgressBar(); + if (progressBar == null) { + final ViewStub progressBarStub = + (ViewStub) templateLayout.findManagedViewById(R.id.suw_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) mTemplateLayout.findManagedViewById(R.id.suw_layout_progress); - } + /** + * 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(R.id.suw_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) { - mColor = 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); - } - } + /** 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 mColor; - } + /** + * @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; + } } |