| /* |
| * Copyright (C) 2015 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 android.support.v4.widget; |
| |
| import android.graphics.drawable.Drawable; |
| import android.os.Build; |
| import android.support.annotation.DrawableRes; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.Nullable; |
| import android.support.annotation.StyleRes; |
| import android.widget.TextView; |
| |
| /** |
| * Helper for accessing features in {@link TextView} introduced after API level |
| * 4 in a backwards compatible fashion. |
| */ |
| public final class TextViewCompat { |
| |
| // Hide constructor |
| private TextViewCompat() {} |
| |
| interface TextViewCompatImpl { |
| void setCompoundDrawablesRelative(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom); |
| void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom); |
| void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @DrawableRes int start, @DrawableRes int top, @DrawableRes int end, |
| @DrawableRes int bottom); |
| int getMaxLines(TextView textView); |
| int getMinLines(TextView textView); |
| void setTextAppearance(@NonNull TextView textView, @StyleRes int resId); |
| } |
| |
| static class BaseTextViewCompatImpl implements TextViewCompatImpl { |
| @Override |
| public void setCompoundDrawablesRelative(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| textView.setCompoundDrawables(start, top, end, bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| textView.setCompoundDrawablesWithIntrinsicBounds(start, top, end, bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @DrawableRes int start, @DrawableRes int top, @DrawableRes int end, |
| @DrawableRes int bottom) { |
| textView.setCompoundDrawablesWithIntrinsicBounds(start, top, end, bottom); |
| } |
| |
| @Override |
| public int getMaxLines(TextView textView) { |
| return TextViewCompatGingerbread.getMaxLines(textView); |
| } |
| |
| @Override |
| public int getMinLines(TextView textView) { |
| return TextViewCompatGingerbread.getMinLines(textView); |
| } |
| |
| @Override |
| public void setTextAppearance(TextView textView, @StyleRes int resId) { |
| TextViewCompatGingerbread.setTextAppearance(textView, resId); |
| } |
| } |
| |
| static class JbTextViewCompatImpl extends BaseTextViewCompatImpl { |
| @Override |
| public int getMaxLines(TextView textView) { |
| return TextViewCompatJb.getMaxLines(textView); |
| } |
| |
| @Override |
| public int getMinLines(TextView textView) { |
| return TextViewCompatJb.getMinLines(textView); |
| } |
| } |
| |
| static class JbMr1TextViewCompatImpl extends JbTextViewCompatImpl { |
| @Override |
| public void setCompoundDrawablesRelative(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| TextViewCompatJbMr1.setCompoundDrawablesRelative(textView, start, top, end, bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| TextViewCompatJbMr1.setCompoundDrawablesRelativeWithIntrinsicBounds(textView, |
| start, top, end, bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @DrawableRes int start, @DrawableRes int top, @DrawableRes int end, |
| @DrawableRes int bottom) { |
| TextViewCompatJbMr1.setCompoundDrawablesRelativeWithIntrinsicBounds(textView, |
| start, top, end, bottom); |
| } |
| } |
| |
| static class JbMr2TextViewCompatImpl extends JbMr1TextViewCompatImpl { |
| @Override |
| public void setCompoundDrawablesRelative(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| TextViewCompatJbMr2.setCompoundDrawablesRelative(textView, start, top, end, bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| TextViewCompatJbMr2 |
| .setCompoundDrawablesRelativeWithIntrinsicBounds(textView, start, top, end, |
| bottom); |
| } |
| |
| @Override |
| public void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @DrawableRes int start, @DrawableRes int top, @DrawableRes int end, |
| @DrawableRes int bottom) { |
| TextViewCompatJbMr2.setCompoundDrawablesRelativeWithIntrinsicBounds(textView, |
| start, top, end, bottom); |
| } |
| } |
| |
| static class Api23TextViewCompatImpl extends JbMr2TextViewCompatImpl { |
| @Override |
| public void setTextAppearance(@NonNull TextView textView, @StyleRes int resId) { |
| TextViewCompatApi23.setTextAppearance(textView, resId); |
| } |
| } |
| |
| static final TextViewCompatImpl IMPL; |
| |
| static { |
| final int version = Build.VERSION.SDK_INT; |
| if (version >= 23) { |
| IMPL = new Api23TextViewCompatImpl(); |
| } else if (version >= 18) { |
| IMPL = new JbMr2TextViewCompatImpl(); |
| } else if (version >= 17) { |
| IMPL = new JbMr1TextViewCompatImpl(); |
| } else if (version >= 16) { |
| IMPL = new JbTextViewCompatImpl(); |
| } else { |
| IMPL = new BaseTextViewCompatImpl(); |
| } |
| } |
| |
| /** |
| * Sets the Drawables (if any) to appear to the start of, above, to the end |
| * of, and below the text. Use {@code null} if you do not want a Drawable |
| * there. The Drawables must already have had {@link Drawable#setBounds} |
| * called. |
| * <p/> |
| * Calling this method will overwrite any Drawables previously set using |
| * {@link TextView#setCompoundDrawables} or related methods. |
| * |
| * @param textView The TextView against which to invoke the method. |
| * @attr name android:drawableStart |
| * @attr name android:drawableTop |
| * @attr name android:drawableEnd |
| * @attr name android:drawableBottom |
| */ |
| public static void setCompoundDrawablesRelative(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| IMPL.setCompoundDrawablesRelative(textView, start, top, end, bottom); |
| } |
| |
| /** |
| * Sets the Drawables (if any) to appear to the start of, above, to the end |
| * of, and below the text. Use {@code null} if you do not want a Drawable |
| * there. The Drawables' bounds will be set to their intrinsic bounds. |
| * <p/> |
| * Calling this method will overwrite any Drawables previously set using |
| * {@link TextView#setCompoundDrawables} or related methods. |
| * |
| * @param textView The TextView against which to invoke the method. |
| * @attr name android:drawableStart |
| * @attr name android:drawableTop |
| * @attr name android:drawableEnd |
| * @attr name android:drawableBottom |
| */ |
| public static void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @Nullable Drawable start, @Nullable Drawable top, @Nullable Drawable end, |
| @Nullable Drawable bottom) { |
| IMPL.setCompoundDrawablesRelativeWithIntrinsicBounds(textView, start, top, end, bottom); |
| } |
| |
| /** |
| * Sets the Drawables (if any) to appear to the start of, above, to the end |
| * of, and below the text. Use 0 if you do not want a Drawable there. The |
| * Drawables' bounds will be set to their intrinsic bounds. |
| * <p/> |
| * Calling this method will overwrite any Drawables previously set using |
| * {@link TextView#setCompoundDrawables} or related methods. |
| * |
| * @param textView The TextView against which to invoke the method. |
| * @param start Resource identifier of the start Drawable. |
| * @param top Resource identifier of the top Drawable. |
| * @param end Resource identifier of the end Drawable. |
| * @param bottom Resource identifier of the bottom Drawable. |
| * @attr name android:drawableStart |
| * @attr name android:drawableTop |
| * @attr name android:drawableEnd |
| * @attr name android:drawableBottom |
| */ |
| public static void setCompoundDrawablesRelativeWithIntrinsicBounds(@NonNull TextView textView, |
| @DrawableRes int start, @DrawableRes int top, @DrawableRes int end, |
| @DrawableRes int bottom) { |
| IMPL.setCompoundDrawablesRelativeWithIntrinsicBounds(textView, start, top, end, bottom); |
| } |
| |
| /** |
| * Returns the maximum number of lines displayed in the given TextView, or -1 if the maximum |
| * height was set in pixels instead. |
| */ |
| public static int getMaxLines(@NonNull TextView textView) { |
| return IMPL.getMaxLines(textView); |
| } |
| |
| /** |
| * Returns the minimum number of lines displayed in the given TextView, or -1 if the minimum |
| * height was set in pixels instead. |
| */ |
| public static int getMinLines(@NonNull TextView textView) { |
| return IMPL.getMinLines(textView); |
| } |
| |
| /** |
| * Sets the text appearance from the specified style resource. |
| * <p> |
| * Use a framework-defined {@code TextAppearance} style like |
| * {@link android.R.style#TextAppearance_Material_Body1 @android:style/TextAppearance.Material.Body1} |
| * or see {@link android.R.styleable#TextAppearance TextAppearance} for the |
| * set of attributes that can be used in a custom style. |
| * |
| * @param textView The TextView against which to invoke the method. |
| * @param resId The resource identifier of the style to apply. |
| */ |
| public static void setTextAppearance(@NonNull TextView textView, @StyleRes int resId) { |
| IMPL.setTextAppearance(textView, resId); |
| } |
| } |