| /* |
| * 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.design.widget; |
| |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.content.res.TypedArray; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.Typeface; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.Nullable; |
| import android.support.annotation.StyleRes; |
| import android.support.design.R; |
| import android.support.v4.view.AccessibilityDelegateCompat; |
| import android.support.v4.view.GravityCompat; |
| import android.support.v4.view.ViewCompat; |
| import android.support.v4.view.ViewPropertyAnimatorListenerAdapter; |
| import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat; |
| import android.support.v4.widget.Space; |
| import android.support.v7.widget.AppCompatDrawableManager; |
| import android.text.Editable; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.util.AttributeSet; |
| import android.util.TypedValue; |
| import android.view.Gravity; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.animation.AccelerateInterpolator; |
| import android.widget.EditText; |
| import android.widget.LinearLayout; |
| import android.widget.TextView; |
| |
| /** |
| * Layout which wraps an {@link android.widget.EditText} (or descendant) to show a floating label |
| * when the hint is hidden due to the user inputting text. |
| * |
| * Also supports showing an error via {@link #setErrorEnabled(boolean)} and |
| * {@link #setError(CharSequence)}. |
| */ |
| public class TextInputLayout extends LinearLayout { |
| |
| private static final int ANIMATION_DURATION = 200; |
| private static final int INVALID_MAX_LENGTH = -1; |
| |
| private EditText mEditText; |
| |
| private boolean mHintEnabled; |
| private CharSequence mHint; |
| |
| private Paint mTmpPaint; |
| |
| private LinearLayout mIndicatorArea; |
| |
| private boolean mErrorEnabled; |
| private TextView mErrorView; |
| private int mErrorTextAppearance; |
| private boolean mErrorShown; |
| |
| private boolean mCounterEnabled; |
| private TextView mCounterView; |
| private int mCounterMaxLength; |
| private int mCounterTextAppearance; |
| private int mCounterOverflowTextAppearance; |
| private boolean mCounterOverflowed; |
| |
| private ColorStateList mDefaultTextColor; |
| private ColorStateList mFocusedTextColor; |
| |
| private final CollapsingTextHelper mCollapsingTextHelper = new CollapsingTextHelper(this); |
| |
| private boolean mHintAnimationEnabled; |
| private ValueAnimatorCompat mAnimator; |
| |
| public TextInputLayout(Context context) { |
| this(context, null); |
| } |
| |
| public TextInputLayout(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public TextInputLayout(Context context, AttributeSet attrs, int defStyleAttr) { |
| // Can't call through to super(Context, AttributeSet, int) since it doesn't exist on API 10 |
| super(context, attrs); |
| |
| ThemeUtils.checkAppCompatTheme(context); |
| |
| setOrientation(VERTICAL); |
| setWillNotDraw(false); |
| setAddStatesFromChildren(true); |
| |
| mCollapsingTextHelper.setTextSizeInterpolator(AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR); |
| mCollapsingTextHelper.setPositionInterpolator(new AccelerateInterpolator()); |
| mCollapsingTextHelper.setCollapsedTextGravity(Gravity.TOP | GravityCompat.START); |
| |
| final TypedArray a = context.obtainStyledAttributes(attrs, |
| R.styleable.TextInputLayout, defStyleAttr, R.style.Widget_Design_TextInputLayout); |
| mHintEnabled = a.getBoolean(R.styleable.TextInputLayout_hintEnabled, true); |
| setHint(a.getText(R.styleable.TextInputLayout_android_hint)); |
| mHintAnimationEnabled = a.getBoolean( |
| R.styleable.TextInputLayout_hintAnimationEnabled, true); |
| |
| if (a.hasValue(R.styleable.TextInputLayout_android_textColorHint)) { |
| mDefaultTextColor = mFocusedTextColor = |
| a.getColorStateList(R.styleable.TextInputLayout_android_textColorHint); |
| } |
| |
| final int hintAppearance = a.getResourceId( |
| R.styleable.TextInputLayout_hintTextAppearance, -1); |
| if (hintAppearance != -1) { |
| setHintTextAppearance( |
| a.getResourceId(R.styleable.TextInputLayout_hintTextAppearance, 0)); |
| } |
| |
| mErrorTextAppearance = a.getResourceId(R.styleable.TextInputLayout_errorTextAppearance, 0); |
| final boolean errorEnabled = a.getBoolean(R.styleable.TextInputLayout_errorEnabled, false); |
| |
| final boolean counterEnabled = a.getBoolean( |
| R.styleable.TextInputLayout_counterEnabled, false); |
| setCounterMaxLength( |
| a.getInt(R.styleable.TextInputLayout_counterMaxLength, INVALID_MAX_LENGTH)); |
| mCounterTextAppearance = a.getResourceId( |
| R.styleable.TextInputLayout_counterTextAppearance, 0); |
| mCounterOverflowTextAppearance = a.getResourceId( |
| R.styleable.TextInputLayout_counterOverflowTextAppearance, 0); |
| a.recycle(); |
| |
| setErrorEnabled(errorEnabled); |
| setCounterEnabled(counterEnabled); |
| |
| if (ViewCompat.getImportantForAccessibility(this) |
| == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { |
| // Make sure we're important for accessibility if we haven't been explicitly not |
| ViewCompat.setImportantForAccessibility(this, |
| ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES); |
| } |
| |
| ViewCompat.setAccessibilityDelegate(this, new TextInputAccessibilityDelegate()); |
| } |
| |
| @Override |
| public void addView(View child, int index, ViewGroup.LayoutParams params) { |
| if (child instanceof EditText) { |
| setEditText((EditText) child); |
| super.addView(child, 0, updateEditTextMargin(params)); |
| } else { |
| // Carry on adding the View... |
| super.addView(child, index, params); |
| } |
| } |
| |
| /** |
| * Set the typeface to use for both the expanded and floating hint. |
| * |
| * @param typeface typeface to use, or {@code null} to use the default. |
| */ |
| public void setTypeface(@Nullable Typeface typeface) { |
| mCollapsingTextHelper.setTypefaces(typeface); |
| } |
| |
| /** |
| * Returns the typeface used for both the expanded and floating hint. |
| */ |
| @NonNull |
| public Typeface getTypeface() { |
| // This could be either the collapsed or expanded |
| return mCollapsingTextHelper.getCollapsedTypeface(); |
| } |
| |
| private void setEditText(EditText editText) { |
| // If we already have an EditText, throw an exception |
| if (mEditText != null) { |
| throw new IllegalArgumentException("We already have an EditText, can only have one"); |
| } |
| mEditText = editText; |
| |
| // Use the EditText's typeface, and it's text size for our expanded text |
| mCollapsingTextHelper.setTypefaces(mEditText.getTypeface()); |
| mCollapsingTextHelper.setExpandedTextSize(mEditText.getTextSize()); |
| mCollapsingTextHelper.setExpandedTextGravity(mEditText.getGravity()); |
| |
| // Add a TextWatcher so that we know when the text input has changed |
| mEditText.addTextChangedListener(new TextWatcher() { |
| @Override |
| public void afterTextChanged(Editable s) { |
| updateLabelState(true); |
| if (mCounterEnabled) { |
| updateCounter(s.length()); |
| } |
| } |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) {} |
| |
| @Override |
| public void onTextChanged(CharSequence s, int start, int before, int count) {} |
| }); |
| |
| // Use the EditText's hint colors if we don't have one set |
| if (mDefaultTextColor == null) { |
| mDefaultTextColor = mEditText.getHintTextColors(); |
| } |
| |
| // If we do not have a valid hint, try and retrieve it from the EditText, if enabled |
| if (mHintEnabled && TextUtils.isEmpty(mHint)) { |
| setHint(mEditText.getHint()); |
| // Clear the EditText's hint as we will display it ourselves |
| mEditText.setHint(null); |
| } |
| |
| if (mCounterView != null) { |
| updateCounter(mEditText.getText().length()); |
| } |
| |
| if (mIndicatorArea != null) { |
| adjustIndicatorPadding(); |
| } |
| |
| // Update the label visibility with no animation |
| updateLabelState(false); |
| } |
| |
| private LayoutParams updateEditTextMargin(ViewGroup.LayoutParams lp) { |
| // Create/update the LayoutParams so that we can add enough top margin |
| // to the EditText so make room for the label |
| LayoutParams llp = lp instanceof LayoutParams ? (LayoutParams) lp : new LayoutParams(lp); |
| |
| if (mHintEnabled) { |
| if (mTmpPaint == null) { |
| mTmpPaint = new Paint(); |
| } |
| mTmpPaint.setTypeface(mCollapsingTextHelper.getCollapsedTypeface()); |
| mTmpPaint.setTextSize(mCollapsingTextHelper.getCollapsedTextSize()); |
| llp.topMargin = (int) -mTmpPaint.ascent(); |
| } else { |
| llp.topMargin = 0; |
| } |
| |
| return llp; |
| } |
| |
| private void updateLabelState(boolean animate) { |
| final boolean hasText = mEditText != null && !TextUtils.isEmpty(mEditText.getText()); |
| final boolean isFocused = arrayContains(getDrawableState(), android.R.attr.state_focused); |
| final boolean isErrorShowing = !TextUtils.isEmpty(getError()); |
| |
| if (mDefaultTextColor != null) { |
| mCollapsingTextHelper.setExpandedTextColor(mDefaultTextColor.getDefaultColor()); |
| } |
| |
| if (mCounterOverflowed && mCounterView != null) { |
| mCollapsingTextHelper.setCollapsedTextColor(mCounterView.getCurrentTextColor()); |
| } else if (isErrorShowing && mErrorView != null) { |
| mCollapsingTextHelper.setCollapsedTextColor(mErrorView.getCurrentTextColor()); |
| } else if (isFocused && mFocusedTextColor != null) { |
| mCollapsingTextHelper.setCollapsedTextColor(mFocusedTextColor.getDefaultColor()); |
| } else if (mDefaultTextColor != null) { |
| mCollapsingTextHelper.setCollapsedTextColor(mDefaultTextColor.getDefaultColor()); |
| } |
| |
| if (hasText || isFocused || isErrorShowing) { |
| // We should be showing the label so do so if it isn't already |
| collapseHint(animate); |
| } else { |
| // We should not be showing the label so hide it |
| expandHint(animate); |
| } |
| } |
| |
| /** |
| * Returns the {@link android.widget.EditText} used for text input. |
| */ |
| @Nullable |
| public EditText getEditText() { |
| return mEditText; |
| } |
| |
| /** |
| * Set the hint to be displayed in the floating label, if enabled. |
| * |
| * @see #setHintEnabled(boolean) |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_android_hint |
| */ |
| public void setHint(@Nullable CharSequence hint) { |
| if (mHintEnabled) { |
| setHintInternal(hint); |
| sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); |
| } |
| } |
| |
| private void setHintInternal(CharSequence hint) { |
| mHint = hint; |
| mCollapsingTextHelper.setText(hint); |
| } |
| |
| /** |
| * Returns the hint which is displayed in the floating label, if enabled. |
| * |
| * @return the hint, or null if there isn't one set, or the hint is not enabled. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_android_hint |
| */ |
| @Nullable |
| public CharSequence getHint() { |
| return mHintEnabled ? mHint : null; |
| } |
| |
| /** |
| * Sets whether the floating label functionality is enabled or not in this layout. |
| * |
| * <p>If enabled, any non-empty hint in the child EditText will be moved into the floating |
| * hint, and its existing hint will be cleared. If disabled, then any non-empty floating hint |
| * in this layout will be moved into the EditText, and this layout's hint will be cleared.</p> |
| * |
| * @see #setHint(CharSequence) |
| * @see #isHintEnabled() |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_hintEnabled |
| */ |
| public void setHintEnabled(boolean enabled) { |
| if (enabled != mHintEnabled) { |
| mHintEnabled = enabled; |
| |
| final CharSequence editTextHint = mEditText.getHint(); |
| if (!mHintEnabled) { |
| if (!TextUtils.isEmpty(mHint) && TextUtils.isEmpty(editTextHint)) { |
| // If the hint is disabled, but we have a hint set, and the EditText doesn't, |
| // pass it through... |
| mEditText.setHint(mHint); |
| } |
| // Now clear out any set hint |
| setHintInternal(null); |
| } else { |
| if (!TextUtils.isEmpty(editTextHint)) { |
| // If the hint is now enabled and the EditText has one set, we'll use it if |
| // we don't already have one, and clear the EditText's |
| if (TextUtils.isEmpty(mHint)) { |
| setHint(editTextHint); |
| } |
| mEditText.setHint(null); |
| } |
| } |
| |
| // Now update the EditText top margin |
| if (mEditText != null) { |
| final LayoutParams lp = updateEditTextMargin(mEditText.getLayoutParams()); |
| mEditText.setLayoutParams(lp); |
| } |
| } |
| } |
| |
| /** |
| * Returns whether the floating label functionality is enabled or not in this layout. |
| * |
| * @see #setHintEnabled(boolean) |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_hintEnabled |
| */ |
| public boolean isHintEnabled() { |
| return mHintEnabled; |
| } |
| |
| /** |
| * Sets the hint text color, size, style from the specified TextAppearance resource. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_hintTextAppearance |
| */ |
| public void setHintTextAppearance(@StyleRes int resId) { |
| mCollapsingTextHelper.setCollapsedTextAppearance(resId); |
| mFocusedTextColor = ColorStateList.valueOf(mCollapsingTextHelper.getCollapsedTextColor()); |
| |
| if (mEditText != null) { |
| updateLabelState(false); |
| |
| // Text size might have changed so update the top margin |
| LayoutParams lp = updateEditTextMargin(mEditText.getLayoutParams()); |
| mEditText.setLayoutParams(lp); |
| mEditText.requestLayout(); |
| } |
| } |
| |
| private void addIndicator(TextView indicator, int index) { |
| if (mIndicatorArea == null) { |
| mIndicatorArea = new LinearLayout(getContext()); |
| mIndicatorArea.setOrientation(LinearLayout.HORIZONTAL); |
| addView(mIndicatorArea, LinearLayout.LayoutParams.MATCH_PARENT, |
| LinearLayout.LayoutParams.WRAP_CONTENT); |
| |
| // Add a flexible spacer in the middle so that the left/right views stay pinned |
| final Space spacer = new Space(getContext()); |
| final LinearLayout.LayoutParams spacerLp = new LinearLayout.LayoutParams(0, 0, 1f); |
| mIndicatorArea.addView(spacer, spacerLp); |
| |
| if (mEditText != null) { |
| adjustIndicatorPadding(); |
| } |
| } |
| mIndicatorArea.setVisibility(View.VISIBLE); |
| mIndicatorArea.addView(indicator, index); |
| } |
| |
| private void adjustIndicatorPadding() { |
| // Add padding to the error and character counter so that they match the EditText |
| ViewCompat.setPaddingRelative(mIndicatorArea, ViewCompat.getPaddingStart(mEditText), |
| 0, ViewCompat.getPaddingEnd(mEditText), mEditText.getPaddingBottom()); |
| } |
| |
| private void removeIndicator(TextView indicator) { |
| if (mIndicatorArea != null) { |
| mIndicatorArea.removeView(indicator); |
| if (mIndicatorArea.getChildCount() == 0) { |
| mIndicatorArea.setVisibility(View.GONE); |
| } |
| } |
| } |
| |
| /** |
| * Whether the error functionality is enabled or not in this layout. Enabling this |
| * functionality before setting an error message via {@link #setError(CharSequence)}, will mean |
| * that this layout will not change size when an error is displayed. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_errorEnabled |
| */ |
| public void setErrorEnabled(boolean enabled) { |
| if (mErrorEnabled != enabled) { |
| if (mErrorView != null) { |
| ViewCompat.animate(mErrorView).cancel(); |
| } |
| |
| if (enabled) { |
| mErrorView = new TextView(getContext()); |
| mErrorView.setTextAppearance(getContext(), mErrorTextAppearance); |
| mErrorView.setVisibility(INVISIBLE); |
| ViewCompat.setAccessibilityLiveRegion(mErrorView, |
| ViewCompat.ACCESSIBILITY_LIVE_REGION_POLITE); |
| addIndicator(mErrorView, 0); |
| } else { |
| mErrorShown = false; |
| updateEditTextBackground(); |
| removeIndicator(mErrorView); |
| mErrorView = null; |
| } |
| mErrorEnabled = enabled; |
| } |
| } |
| |
| /** |
| * Returns whether the error functionality is enabled or not in this layout. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_errorEnabled |
| * |
| * @see #setErrorEnabled(boolean) |
| */ |
| public boolean isErrorEnabled() { |
| return mErrorEnabled; |
| } |
| |
| /** |
| * Sets an error message that will be displayed below our {@link EditText}. If the |
| * {@code error} is {@code null}, the error message will be cleared. |
| * <p> |
| * If the error functionality has not been enabled via {@link #setErrorEnabled(boolean)}, then |
| * it will be automatically enabled if {@code error} is not empty. |
| * |
| * @param error Error message to display, or null to clear |
| * |
| * @see #getError() |
| */ |
| public void setError(@Nullable CharSequence error) { |
| if (!mErrorEnabled) { |
| if (TextUtils.isEmpty(error)) { |
| // If error isn't enabled, and the error is empty, just return |
| return; |
| } |
| // Else, we'll assume that they want to enable the error functionality |
| setErrorEnabled(true); |
| } |
| |
| if (!TextUtils.isEmpty(error)) { |
| ViewCompat.setAlpha(mErrorView, 0f); |
| mErrorView.setText(error); |
| ViewCompat.animate(mErrorView) |
| .alpha(1f) |
| .setDuration(ANIMATION_DURATION) |
| .setInterpolator(AnimationUtils.LINEAR_OUT_SLOW_IN_INTERPOLATOR) |
| .setListener(new ViewPropertyAnimatorListenerAdapter() { |
| @Override |
| public void onAnimationStart(View view) { |
| view.setVisibility(VISIBLE); |
| } |
| }) |
| .start(); |
| |
| // Set the EditText's background tint to the error color |
| mErrorShown = true; |
| updateEditTextBackground(); |
| updateLabelState(true); |
| } else { |
| if (mErrorView.getVisibility() == VISIBLE) { |
| ViewCompat.animate(mErrorView) |
| .alpha(0f) |
| .setDuration(ANIMATION_DURATION) |
| .setInterpolator(AnimationUtils.FAST_OUT_LINEAR_IN_INTERPOLATOR) |
| .setListener(new ViewPropertyAnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(View view) { |
| view.setVisibility(INVISIBLE); |
| |
| updateLabelState(true); |
| } |
| }).start(); |
| |
| // Restore the 'original' tint, using colorControlNormal and colorControlActivated |
| mErrorShown = false; |
| updateEditTextBackground(); |
| } |
| } |
| } |
| |
| /** |
| * Whether the character counter functionality is enabled or not in this layout. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_counterEnabled |
| */ |
| public void setCounterEnabled(boolean enabled) { |
| if (mCounterEnabled != enabled) { |
| if (enabled) { |
| mCounterView = new TextView(getContext()); |
| mCounterView.setMaxLines(1); |
| mCounterView.setTextAppearance(getContext(), mCounterTextAppearance); |
| ViewCompat.setAccessibilityLiveRegion(mCounterView, |
| ViewCompat.ACCESSIBILITY_LIVE_REGION_POLITE); |
| addIndicator(mCounterView, -1); |
| if (mEditText == null) { |
| updateCounter(0); |
| } else { |
| updateCounter(mEditText.getText().length()); |
| } |
| } else { |
| removeIndicator(mCounterView); |
| mCounterView = null; |
| } |
| mCounterEnabled = enabled; |
| } |
| } |
| |
| /** |
| * Returns whether the character counter functionality is enabled or not in this layout. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_counterEnabled |
| * |
| * @see #setCounterEnabled(boolean) |
| */ |
| public boolean isCounterEnabled() { |
| return mCounterEnabled; |
| } |
| |
| /** |
| * Sets the max length to display at the character counter. |
| * |
| * @param maxLength maxLength to display. Any value less than or equal to 0 will not be shown. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_counterMaxLength |
| */ |
| public void setCounterMaxLength(int maxLength) { |
| if (mCounterMaxLength != maxLength) { |
| if (maxLength > 0) { |
| mCounterMaxLength = maxLength; |
| } else { |
| mCounterMaxLength = INVALID_MAX_LENGTH; |
| } |
| if (mCounterEnabled) { |
| updateCounter(mEditText == null ? 0 : mEditText.getText().length()); |
| } |
| } |
| } |
| |
| /** |
| * Returns the max length shown at the character counter. |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_counterMaxLength |
| */ |
| public int getCounterMaxLength() { |
| return mCounterMaxLength; |
| } |
| |
| private void updateCounter(int length) { |
| boolean wasCounterOverflowed = mCounterOverflowed; |
| if (mCounterMaxLength == INVALID_MAX_LENGTH) { |
| mCounterView.setText(String.valueOf(length)); |
| mCounterOverflowed = false; |
| } else { |
| mCounterOverflowed = length > mCounterMaxLength; |
| if (wasCounterOverflowed != mCounterOverflowed) { |
| mCounterView.setTextAppearance(getContext(), mCounterOverflowed ? |
| mCounterOverflowTextAppearance : mCounterTextAppearance); |
| } |
| mCounterView.setText(getContext().getString(R.string.character_counter_pattern, |
| length, mCounterMaxLength)); |
| } |
| if (mEditText != null && wasCounterOverflowed != mCounterOverflowed) { |
| updateLabelState(false); |
| updateEditTextBackground(); |
| } |
| } |
| |
| private void updateEditTextBackground() { |
| if (mErrorShown && mErrorView != null) { |
| // Set the EditText's background tint to the error color |
| ViewCompat.setBackgroundTintList(mEditText, |
| ColorStateList.valueOf(mErrorView.getCurrentTextColor())); |
| } else if (mCounterOverflowed && mCounterView != null) { |
| ViewCompat.setBackgroundTintList(mEditText, |
| ColorStateList.valueOf(mCounterView.getCurrentTextColor())); |
| } else { |
| ViewCompat.setBackgroundTintList(mEditText, |
| AppCompatDrawableManager.get() |
| .getTintList(getContext(), R.drawable.abc_edit_text_material)); |
| } |
| } |
| |
| /** |
| * Returns the error message that was set to be displayed with |
| * {@link #setError(CharSequence)}, or <code>null</code> if no error was set |
| * or if error displaying is not enabled. |
| * |
| * @see #setError(CharSequence) |
| */ |
| @Nullable |
| public CharSequence getError() { |
| if (mErrorEnabled && mErrorView != null && mErrorView.getVisibility() == VISIBLE) { |
| return mErrorView.getText(); |
| } |
| return null; |
| } |
| |
| /** |
| * Returns whether any hint state changes, due to being focused or non-empty text, are |
| * animated. |
| * |
| * @see #setHintAnimationEnabled(boolean) |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_hintAnimationEnabled |
| */ |
| public boolean isHintAnimationEnabled() { |
| return mHintAnimationEnabled; |
| } |
| |
| /** |
| * Set whether any hint state changes, due to being focused or non-empty text, are |
| * animated. |
| * |
| * @see #isHintAnimationEnabled() |
| * |
| * @attr ref android.support.design.R.styleable#TextInputLayout_hintAnimationEnabled |
| */ |
| public void setHintAnimationEnabled(boolean enabled) { |
| mHintAnimationEnabled = enabled; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| super.draw(canvas); |
| |
| if (mHintEnabled) { |
| mCollapsingTextHelper.draw(canvas); |
| } |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| super.onLayout(changed, left, top, right, bottom); |
| |
| if (mHintEnabled && mEditText != null) { |
| final int l = mEditText.getLeft() + mEditText.getCompoundPaddingLeft(); |
| final int r = mEditText.getRight() - mEditText.getCompoundPaddingRight(); |
| |
| mCollapsingTextHelper.setExpandedBounds(l, |
| mEditText.getTop() + mEditText.getCompoundPaddingTop(), |
| r, mEditText.getBottom() - mEditText.getCompoundPaddingBottom()); |
| |
| // Set the collapsed bounds to be the the full height (minus padding) to match the |
| // EditText's editable area |
| mCollapsingTextHelper.setCollapsedBounds(l, getPaddingTop(), |
| r, bottom - top - getPaddingBottom()); |
| |
| mCollapsingTextHelper.recalculate(); |
| } |
| } |
| |
| @Override |
| public void refreshDrawableState() { |
| super.refreshDrawableState(); |
| // Drawable state has changed so see if we need to update the label |
| updateLabelState(ViewCompat.isLaidOut(this)); |
| } |
| |
| private void collapseHint(boolean animate) { |
| if (mAnimator != null && mAnimator.isRunning()) { |
| mAnimator.cancel(); |
| } |
| if (animate && mHintAnimationEnabled) { |
| animateToExpansionFraction(1f); |
| } else { |
| mCollapsingTextHelper.setExpansionFraction(1f); |
| } |
| } |
| |
| private void expandHint(boolean animate) { |
| if (mAnimator != null && mAnimator.isRunning()) { |
| mAnimator.cancel(); |
| } |
| if (animate && mHintAnimationEnabled) { |
| animateToExpansionFraction(0f); |
| } else { |
| mCollapsingTextHelper.setExpansionFraction(0f); |
| } |
| } |
| |
| private void animateToExpansionFraction(final float target) { |
| if (mCollapsingTextHelper.getExpansionFraction() == target) { |
| return; |
| } |
| if (mAnimator == null) { |
| mAnimator = ViewUtils.createAnimator(); |
| mAnimator.setInterpolator(AnimationUtils.LINEAR_INTERPOLATOR); |
| mAnimator.setDuration(ANIMATION_DURATION); |
| mAnimator.setUpdateListener(new ValueAnimatorCompat.AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimatorCompat animator) { |
| mCollapsingTextHelper.setExpansionFraction(animator.getAnimatedFloatValue()); |
| } |
| }); |
| } |
| mAnimator.setFloatValues(mCollapsingTextHelper.getExpansionFraction(), target); |
| mAnimator.start(); |
| } |
| |
| private int getThemeAttrColor(int attr) { |
| TypedValue tv = new TypedValue(); |
| if (getContext().getTheme().resolveAttribute(attr, tv, true)) { |
| return tv.data; |
| } else { |
| return Color.MAGENTA; |
| } |
| } |
| |
| private class TextInputAccessibilityDelegate extends AccessibilityDelegateCompat { |
| @Override |
| public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) { |
| super.onInitializeAccessibilityEvent(host, event); |
| event.setClassName(TextInputLayout.class.getSimpleName()); |
| } |
| |
| @Override |
| public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) { |
| super.onPopulateAccessibilityEvent(host, event); |
| |
| final CharSequence text = mCollapsingTextHelper.getText(); |
| if (!TextUtils.isEmpty(text)) { |
| event.getText().add(text); |
| } |
| } |
| |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| info.setClassName(TextInputLayout.class.getSimpleName()); |
| |
| final CharSequence text = mCollapsingTextHelper.getText(); |
| if (!TextUtils.isEmpty(text)) { |
| info.setText(text); |
| } |
| if (mEditText != null) { |
| info.setLabelFor(mEditText); |
| } |
| final CharSequence error = mErrorView != null ? mErrorView.getText() : null; |
| if (!TextUtils.isEmpty(error)) { |
| info.setContentInvalid(true); |
| info.setError(error); |
| } |
| } |
| } |
| |
| private static boolean arrayContains(int[] array, int value) { |
| for (int v : array) { |
| if (v == value) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |
