| /* |
| * Copyright (C) 2007 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.widget; |
| |
| import com.android.internal.R; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.drawable.Drawable; |
| import android.util.AttributeSet; |
| import android.view.Gravity; |
| import android.view.ViewDebug; |
| import android.view.accessibility.AccessibilityEvent; |
| |
| |
| /** |
| * An extension to TextView that supports the {@link android.widget.Checkable} interface. |
| * This is useful when used in a {@link android.widget.ListView ListView} where the it's |
| * {@link android.widget.ListView#setChoiceMode(int) setChoiceMode} has been set to |
| * something other than {@link android.widget.ListView#CHOICE_MODE_NONE CHOICE_MODE_NONE}. |
| * |
| */ |
| public class CheckedTextView extends TextView implements Checkable { |
| private boolean mChecked; |
| private int mCheckMarkResource; |
| private Drawable mCheckMarkDrawable; |
| private int mBasePaddingRight; |
| private int mCheckMarkWidth; |
| |
| private static final int[] CHECKED_STATE_SET = { |
| R.attr.state_checked |
| }; |
| |
| public CheckedTextView(Context context) { |
| this(context, null); |
| } |
| |
| public CheckedTextView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public CheckedTextView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, |
| R.styleable.CheckedTextView, defStyle, 0); |
| |
| Drawable d = a.getDrawable(R.styleable.CheckedTextView_checkMark); |
| if (d != null) { |
| setCheckMarkDrawable(d); |
| } |
| |
| boolean checked = a.getBoolean(R.styleable.CheckedTextView_checked, false); |
| setChecked(checked); |
| |
| a.recycle(); |
| } |
| |
| public void toggle() { |
| setChecked(!mChecked); |
| } |
| |
| @ViewDebug.ExportedProperty |
| public boolean isChecked() { |
| return mChecked; |
| } |
| |
| /** |
| * <p>Changes the checked state of this text view.</p> |
| * |
| * @param checked true to check the text, false to uncheck it |
| */ |
| public void setChecked(boolean checked) { |
| if (mChecked != checked) { |
| mChecked = checked; |
| refreshDrawableState(); |
| } |
| } |
| |
| |
| /** |
| * Set the checkmark to a given Drawable, identified by its resourece id. This will be drawn |
| * when {@link #isChecked()} is true. |
| * |
| * @param resid The Drawable to use for the checkmark. |
| */ |
| public void setCheckMarkDrawable(int resid) { |
| if (resid != 0 && resid == mCheckMarkResource) { |
| return; |
| } |
| |
| mCheckMarkResource = resid; |
| |
| Drawable d = null; |
| if (mCheckMarkResource != 0) { |
| d = getResources().getDrawable(mCheckMarkResource); |
| } |
| setCheckMarkDrawable(d); |
| } |
| |
| /** |
| * Set the checkmark to a given Drawable. This will be drawn when {@link #isChecked()} is true. |
| * |
| * @param d The Drawable to use for the checkmark. |
| */ |
| public void setCheckMarkDrawable(Drawable d) { |
| if (mCheckMarkDrawable != null) { |
| mCheckMarkDrawable.setCallback(null); |
| unscheduleDrawable(mCheckMarkDrawable); |
| } |
| if (d != null) { |
| d.setCallback(this); |
| d.setVisible(getVisibility() == VISIBLE, false); |
| d.setState(CHECKED_STATE_SET); |
| setMinHeight(d.getIntrinsicHeight()); |
| |
| mCheckMarkWidth = d.getIntrinsicWidth(); |
| mPaddingRight = mCheckMarkWidth + mBasePaddingRight; |
| d.setState(getDrawableState()); |
| } else { |
| mPaddingRight = mBasePaddingRight; |
| } |
| mCheckMarkDrawable = d; |
| requestLayout(); |
| } |
| |
| @Override |
| public void setPadding(int left, int top, int right, int bottom) { |
| super.setPadding(left, top, right, bottom); |
| mBasePaddingRight = mPaddingRight; |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| |
| final Drawable checkMarkDrawable = mCheckMarkDrawable; |
| if (checkMarkDrawable != null) { |
| final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK; |
| final int height = checkMarkDrawable.getIntrinsicHeight(); |
| |
| int y = 0; |
| |
| switch (verticalGravity) { |
| case Gravity.BOTTOM: |
| y = getHeight() - height; |
| break; |
| case Gravity.CENTER_VERTICAL: |
| y = (getHeight() - height) / 2; |
| break; |
| } |
| |
| int right = getWidth(); |
| checkMarkDrawable.setBounds( |
| right - mCheckMarkWidth - mBasePaddingRight, |
| y, |
| right - mBasePaddingRight, |
| y + height); |
| checkMarkDrawable.draw(canvas); |
| } |
| } |
| |
| @Override |
| protected int[] onCreateDrawableState(int extraSpace) { |
| final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); |
| if (isChecked()) { |
| mergeDrawableStates(drawableState, CHECKED_STATE_SET); |
| } |
| return drawableState; |
| } |
| |
| @Override |
| protected void drawableStateChanged() { |
| super.drawableStateChanged(); |
| |
| if (mCheckMarkDrawable != null) { |
| int[] myDrawableState = getDrawableState(); |
| |
| // Set the state of the Drawable |
| mCheckMarkDrawable.setState(myDrawableState); |
| |
| invalidate(); |
| } |
| } |
| |
| @Override |
| public void onPopulateAccessibilityEvent(AccessibilityEvent event) { |
| super.onPopulateAccessibilityEvent(event); |
| event.setChecked(mChecked); |
| } |
| } |