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Diffstat (limited to 'java/src/com/android/inputmethod/latin/SuggestionsView.java')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/SuggestionsView.java | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/latin/SuggestionsView.java b/java/src/com/android/inputmethod/latin/SuggestionsView.java new file mode 100644 index 000000000..617d7f1f2 --- /dev/null +++ b/java/src/com/android/inputmethod/latin/SuggestionsView.java @@ -0,0 +1,819 @@ +/* + * Copyright (C) 2011 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.android.inputmethod.latin; + +import android.content.Context; +import android.content.res.Resources; +import android.content.res.TypedArray; +import android.graphics.Color; +import android.graphics.Typeface; +import android.graphics.drawable.Drawable; +import android.os.Message; +import android.os.SystemClock; +import android.text.Spannable; +import android.text.SpannableString; +import android.text.Spanned; +import android.text.TextPaint; +import android.text.TextUtils; +import android.text.style.BackgroundColorSpan; +import android.text.style.CharacterStyle; +import android.text.style.ForegroundColorSpan; +import android.text.style.StyleSpan; +import android.text.style.UnderlineSpan; +import android.util.AttributeSet; +import android.util.DisplayMetrics; +import android.view.Gravity; +import android.view.LayoutInflater; +import android.view.MotionEvent; +import android.view.View; +import android.view.View.OnClickListener; +import android.view.View.OnLongClickListener; +import android.view.ViewGroup; +import android.widget.LinearLayout; +import android.widget.PopupWindow; +import android.widget.TextView; + +import com.android.inputmethod.compat.FrameLayoutCompatUtils; +import com.android.inputmethod.compat.LinearLayoutCompatUtils; +import com.android.inputmethod.keyboard.KeyboardActionListener; +import com.android.inputmethod.keyboard.MoreKeysPanel; +import com.android.inputmethod.keyboard.PointerTracker; +import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo; + +import java.util.ArrayList; +import java.util.List; + +public class SuggestionsView extends LinearLayout implements OnClickListener, OnLongClickListener { + public interface Listener { + public boolean addWordToDictionary(String word); + public void pickSuggestionManually(int index, CharSequence word); + } + + // The maximum number of suggestions available. See {@link Suggest#mPrefMaxSuggestions}. + public static final int MAX_SUGGESTIONS = 18; + + private static final boolean DBG = LatinImeLogger.sDBG; + + private final ViewGroup mSuggestionsPlacer; + private final ViewGroup mSuggestionsStrip; + private View mKeyboardView; + + private final View mMoreSuggestionsContainer; + private final MoreSuggestionsView mMoreSuggestionsView; + private final MoreSuggestions.Builder mMoreSuggestionsBuilder; + private final PopupWindow mMoreSuggestionsWindow; + + private final ArrayList<TextView> mWords = new ArrayList<TextView>(); + private final ArrayList<TextView> mInfos = new ArrayList<TextView>(); + private final ArrayList<View> mDividers = new ArrayList<View>(); + + private final PopupWindow mPreviewPopup; + private final TextView mPreviewText; + + private Listener mListener; + private SuggestedWords mSuggestions = SuggestedWords.EMPTY; + private boolean mShowingAutoCorrectionInverted; + + private final SuggestionsStripParams mStripParams; + private static final float MIN_TEXT_XSCALE = 0.70f; + + private final UiHandler mHandler = new UiHandler(this); + + private static class UiHandler extends StaticInnerHandlerWrapper<SuggestionsView> { + private static final int MSG_HIDE_PREVIEW = 0; + private static final int MSG_UPDATE_SUGGESTION = 1; + + private static final long DELAY_HIDE_PREVIEW = 1300; + private static final long DELAY_UPDATE_SUGGESTION = 300; + + public UiHandler(SuggestionsView outerInstance) { + super(outerInstance); + } + + @Override + public void dispatchMessage(Message msg) { + final SuggestionsView suggestionsView = getOuterInstance(); + switch (msg.what) { + case MSG_HIDE_PREVIEW: + suggestionsView.hidePreview(); + break; + case MSG_UPDATE_SUGGESTION: + suggestionsView.updateSuggestions(); + break; + } + } + + public void postHidePreview() { + cancelHidePreview(); + sendMessageDelayed(obtainMessage(MSG_HIDE_PREVIEW), DELAY_HIDE_PREVIEW); + } + + public void cancelHidePreview() { + removeMessages(MSG_HIDE_PREVIEW); + } + + public void postUpdateSuggestions() { + cancelUpdateSuggestions(); + sendMessageDelayed(obtainMessage(MSG_UPDATE_SUGGESTION), + DELAY_UPDATE_SUGGESTION); + } + + public void cancelUpdateSuggestions() { + removeMessages(MSG_UPDATE_SUGGESTION); + } + + public void cancelAllMessages() { + cancelHidePreview(); + cancelUpdateSuggestions(); + } + } + + private static class SuggestionsViewParams { + public final int mPadding; + public final int mDividerWidth; + public final int mSuggestionsStripHeight; + + protected final List<TextView> mWords; + protected final List<View> mDividers; + protected final List<TextView> mInfos; + + protected SuggestionsViewParams(List<TextView> words, List<View> dividers, + List<TextView> infos) { + mWords = words; + mDividers = dividers; + mInfos = infos; + + final TextView word = words.get(0); + final View divider = dividers.get(0); + mPadding = word.getCompoundPaddingLeft() + word.getCompoundPaddingRight(); + divider.measure( + ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); + mDividerWidth = divider.getMeasuredWidth(); + + final Resources res = word.getResources(); + mSuggestionsStripHeight = res.getDimensionPixelSize(R.dimen.suggestions_strip_height); + } + } + + private static class SuggestionsStripParams extends SuggestionsViewParams { + private static final int DEFAULT_SUGGESTIONS_COUNT_IN_STRIP = 3; + private static final int DEFAULT_CENTER_SUGGESTION_PERCENTILE = 40; + private static final int PUNCTUATIONS_IN_STRIP = 6; + + private final int mColorTypedWord; + private final int mColorAutoCorrect; + private final int mColorSuggested; + public final int mSuggestionsCountInStrip; + private final float mCenterSuggestionWeight; + private final int mCenterSuggestionIndex; + private final Drawable mMoreSuggestionsHint; + + private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD); + private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan(); + private final CharacterStyle mInvertedForegroundColorSpan; + private final CharacterStyle mInvertedBackgroundColorSpan; + private static final int AUTO_CORRECT_BOLD = 0x01; + private static final int AUTO_CORRECT_UNDERLINE = 0x02; + private static final int AUTO_CORRECT_INVERT = 0x04; + private static final int VALID_TYPED_WORD_BOLD = 0x08; + + private final int mSuggestionStripOption; + + private final ArrayList<CharSequence> mTexts = new ArrayList<CharSequence>(); + + public boolean mMoreSuggestionsAvailable; + + public final TextView mWordToSaveView; + private final TextView mHintToSaveView; + private final CharSequence mHintToSaveText; + + public SuggestionsStripParams(Context context, AttributeSet attrs, int defStyle, + List<TextView> words, List<View> dividers, List<TextView> infos) { + super(words, dividers, infos); + final TypedArray a = context.obtainStyledAttributes( + attrs, R.styleable.SuggestionsView, defStyle, R.style.SuggestionsViewStyle); + mSuggestionStripOption = a.getInt(R.styleable.SuggestionsView_suggestionStripOption, 0); + mColorTypedWord = a.getColor(R.styleable.SuggestionsView_colorTypedWord, 0); + mColorAutoCorrect = a.getColor(R.styleable.SuggestionsView_colorAutoCorrect, 0); + mColorSuggested = a.getColor(R.styleable.SuggestionsView_colorSuggested, 0); + mSuggestionsCountInStrip = a.getInt( + R.styleable.SuggestionsView_suggestionsCountInStrip, + DEFAULT_SUGGESTIONS_COUNT_IN_STRIP); + mCenterSuggestionWeight = a.getInt( + R.styleable.SuggestionsView_centerSuggestionPercentile, + DEFAULT_CENTER_SUGGESTION_PERCENTILE) / 100.0f; + a.recycle(); + + mCenterSuggestionIndex = mSuggestionsCountInStrip / 2; + final Resources res = context.getResources(); + mMoreSuggestionsHint = res.getDrawable(R.drawable.more_suggestions_hint); + + mInvertedForegroundColorSpan = new ForegroundColorSpan(mColorTypedWord ^ 0x00ffffff); + mInvertedBackgroundColorSpan = new BackgroundColorSpan(mColorTypedWord); + + final LayoutInflater inflater = LayoutInflater.from(context); + mWordToSaveView = (TextView)inflater.inflate(R.layout.suggestion_word, null); + mHintToSaveView = (TextView)inflater.inflate(R.layout.suggestion_word, null); + mHintToSaveText = context.getText(R.string.hint_add_to_dictionary); + } + + private CharSequence getStyledSuggestionWord(SuggestedWords suggestions, int pos) { + final CharSequence word = suggestions.getWord(pos); + final boolean isAutoCorrect = pos == 1 && willAutoCorrect(suggestions); + final boolean isTypedWordValid = pos == 0 && suggestions.mTypedWordValid; + if (!isAutoCorrect && !isTypedWordValid) + return word; + + final int len = word.length(); + final Spannable spannedWord = new SpannableString(word); + final int option = mSuggestionStripOption; + if ((isAutoCorrect && (option & AUTO_CORRECT_BOLD) != 0) + || (isTypedWordValid && (option & VALID_TYPED_WORD_BOLD) != 0)) { + spannedWord.setSpan(BOLD_SPAN, 0, len, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + } + if (isAutoCorrect && (option & AUTO_CORRECT_UNDERLINE) != 0) { + spannedWord.setSpan(UNDERLINE_SPAN, 0, len, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + } + return spannedWord; + } + + private static boolean willAutoCorrect(SuggestedWords suggestions) { + return !suggestions.mTypedWordValid && suggestions.mHasMinimalSuggestion; + } + + private int getWordPosition(int index, SuggestedWords suggestions) { + // TODO: This works for 3 suggestions. Revisit this algorithm when there are 5 or more + // suggestions. + final int centerPos = willAutoCorrect(suggestions) ? 1 : 0; + if (index == mCenterSuggestionIndex) { + return centerPos; + } else if (index == centerPos) { + return mCenterSuggestionIndex; + } else { + return index; + } + } + + private int getSuggestionTextColor(int index, SuggestedWords suggestions, int pos) { + // TODO: Need to revisit this logic with bigram suggestions + final boolean isSuggested = (pos != 0); + + final int color; + if (index == mCenterSuggestionIndex && willAutoCorrect(suggestions)) { + color = mColorAutoCorrect; + } else if (isSuggested) { + color = mColorSuggested; + } else { + color = mColorTypedWord; + } + + final SuggestedWordInfo info = (pos < suggestions.size()) + ? suggestions.getInfo(pos) : null; + if (info != null && info.isObsoleteSuggestedWord()) { + return applyAlpha(color, 0.5f); + } else { + return color; + } + } + + private static int applyAlpha(final int color, final float alpha) { + final int newAlpha = (int)(Color.alpha(color) * alpha); + return Color.argb(newAlpha, Color.red(color), Color.green(color), Color.blue(color)); + } + + public CharSequence getInvertedText(CharSequence text) { + if ((mSuggestionStripOption & AUTO_CORRECT_INVERT) == 0) + return null; + final int len = text.length(); + final Spannable word = new SpannableString(text); + word.setSpan(mInvertedBackgroundColorSpan, 0, len, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + word.setSpan(mInvertedForegroundColorSpan, 0, len, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); + return word; + } + + public void layout(SuggestedWords suggestions, ViewGroup stripView, ViewGroup placer, + int stripWidth) { + if (suggestions.isPunctuationSuggestions()) { + layoutPunctuationSuggestions(suggestions, stripView); + return; + } + + final int countInStrip = mSuggestionsCountInStrip; + setupTexts(suggestions, countInStrip); + mMoreSuggestionsAvailable = (suggestions.size() > countInStrip); + int x = 0; + for (int index = 0; index < countInStrip; index++) { + final int pos = getWordPosition(index, suggestions); + + if (index != 0) { + final View divider = mDividers.get(pos); + // Add divider if this isn't the left most suggestion in suggestions strip. + stripView.addView(divider); + x += divider.getMeasuredWidth(); + } + + final CharSequence styled = mTexts.get(pos); + final TextView word = mWords.get(pos); + if (index == mCenterSuggestionIndex && mMoreSuggestionsAvailable) { + // TODO: This "more suggestions hint" should have nicely designed icon. + word.setCompoundDrawablesWithIntrinsicBounds( + null, null, null, mMoreSuggestionsHint); + // HACK: To align with other TextView that has no compound drawables. + word.setCompoundDrawablePadding(-mMoreSuggestionsHint.getIntrinsicHeight()); + } else { + word.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null); + } + + // Disable this suggestion if the suggestion is null or empty. + word.setEnabled(!TextUtils.isEmpty(styled)); + word.setTextColor(getSuggestionTextColor(index, suggestions, pos)); + final int width = getSuggestionWidth(index, stripWidth); + final CharSequence text = getEllipsizedText(styled, width, word.getPaint()); + final float scaleX = word.getTextScaleX(); + word.setText(text); // TextView.setText() resets text scale x to 1.0. + word.setTextScaleX(scaleX); + stripView.addView(word); + setLayoutWeight( + word, getSuggestionWeight(index), ViewGroup.LayoutParams.MATCH_PARENT); + x += word.getMeasuredWidth(); + + if (DBG) { + final CharSequence debugInfo = getDebugInfo(suggestions, pos); + if (debugInfo != null) { + final TextView info = mInfos.get(pos); + info.setText(debugInfo); + placer.addView(info); + info.measure(ViewGroup.LayoutParams.WRAP_CONTENT, + ViewGroup.LayoutParams.WRAP_CONTENT); + final int infoWidth = info.getMeasuredWidth(); + final int y = info.getMeasuredHeight(); + FrameLayoutCompatUtils.placeViewAt( + info, x - infoWidth, y, infoWidth, info.getMeasuredHeight()); + } + } + } + } + + private int getSuggestionWidth(int index, int maxWidth) { + final int paddings = mPadding * mSuggestionsCountInStrip; + final int dividers = mDividerWidth * (mSuggestionsCountInStrip - 1); + final int availableWidth = maxWidth - paddings - dividers; + return (int)(availableWidth * getSuggestionWeight(index)); + } + + private float getSuggestionWeight(int index) { + if (index == mCenterSuggestionIndex) { + return mCenterSuggestionWeight; + } else { + // TODO: Revisit this for cases of 5 or more suggestions + return (1.0f - mCenterSuggestionWeight) / (mSuggestionsCountInStrip - 1); + } + } + + private void setupTexts(SuggestedWords suggestions, int countInStrip) { + mTexts.clear(); + final int count = Math.min(suggestions.size(), countInStrip); + for (int pos = 0; pos < count; pos++) { + final CharSequence styled = getStyledSuggestionWord(suggestions, pos); + mTexts.add(styled); + } + for (int pos = count; pos < countInStrip; pos++) { + // Make this inactive for touches in layout(). + mTexts.add(null); + } + } + + private void layoutPunctuationSuggestions(SuggestedWords suggestions, ViewGroup stripView) { + final int countInStrip = Math.min(suggestions.size(), PUNCTUATIONS_IN_STRIP); + for (int index = 0; index < countInStrip; index++) { + if (index != 0) { + // Add divider if this isn't the left most suggestion in suggestions strip. + stripView.addView(mDividers.get(index)); + } + + final TextView word = mWords.get(index); + word.setEnabled(true); + word.setTextColor(mColorTypedWord); + final CharSequence text = suggestions.getWord(index); + word.setText(text); + word.setTextScaleX(1.0f); + word.setCompoundDrawables(null, null, null, null); + stripView.addView(word); + setLayoutWeight(word, 1.0f, mSuggestionsStripHeight); + } + mMoreSuggestionsAvailable = false; + } + + public void layoutAddToDictionaryHint(CharSequence word, ViewGroup stripView, + int stripWidth) { + final int width = stripWidth - mDividerWidth - mPadding * 2; + + final TextView wordView = mWordToSaveView; + wordView.setTextColor(mColorTypedWord); + final int wordWidth = (int)(width * mCenterSuggestionWeight); + final CharSequence text = getEllipsizedText(word, wordWidth, wordView.getPaint()); + final float wordScaleX = wordView.getTextScaleX(); + wordView.setTag(word); + wordView.setText(text); + wordView.setTextScaleX(wordScaleX); + stripView.addView(wordView); + setLayoutWeight(wordView, mCenterSuggestionWeight, ViewGroup.LayoutParams.MATCH_PARENT); + + stripView.addView(mDividers.get(0)); + + final TextView hintView = mHintToSaveView; + hintView.setTextColor(mColorAutoCorrect); + final int hintWidth = width - wordWidth; + final float hintScaleX = getTextScaleX(mHintToSaveText, hintWidth, hintView.getPaint()); + hintView.setText(mHintToSaveText); + hintView.setTextScaleX(hintScaleX); + stripView.addView(hintView); + setLayoutWeight( + hintView, 1.0f - mCenterSuggestionWeight, ViewGroup.LayoutParams.MATCH_PARENT); + } + } + + /** + * Construct a {@link SuggestionsView} for showing suggested words for completion. + * @param context + * @param attrs + */ + public SuggestionsView(Context context, AttributeSet attrs) { + this(context, attrs, R.attr.suggestionsViewStyle); + } + + public SuggestionsView(Context context, AttributeSet attrs, int defStyle) { + // Note: Up to version 10 (Gingerbread) of the API, LinearLayout doesn't have 3-argument + // constructor. + // TODO: Call 3-argument constructor, super(context, attrs, defStyle), when we abandon + // backward compatibility with the version 10 or earlier of the API. + super(context, attrs); + if (defStyle != R.attr.suggestionsViewStyle) { + throw new IllegalArgumentException( + "can't accept defStyle other than R.attr.suggestionsViewStyle: defStyle=" + + defStyle); + } + setBackgroundDrawable(LinearLayoutCompatUtils.getBackgroundDrawable( + context, attrs, defStyle, R.style.SuggestionsViewStyle)); + + final LayoutInflater inflater = LayoutInflater.from(context); + inflater.inflate(R.layout.suggestions_strip, this); + + mPreviewPopup = new PopupWindow(context); + mPreviewText = (TextView) inflater.inflate(R.layout.suggestion_preview, null); + mPreviewPopup.setWindowLayoutMode( + ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); + mPreviewPopup.setContentView(mPreviewText); + mPreviewPopup.setBackgroundDrawable(null); + + mSuggestionsPlacer = (ViewGroup)findViewById(R.id.suggestions_placer); + mSuggestionsStrip = (ViewGroup)findViewById(R.id.suggestions_strip); + for (int pos = 0; pos < MAX_SUGGESTIONS; pos++) { + final TextView word = (TextView)inflater.inflate(R.layout.suggestion_word, null); + word.setTag(pos); + word.setOnClickListener(this); + word.setOnLongClickListener(this); + mWords.add(word); + final View divider = inflater.inflate(R.layout.suggestion_divider, null); + divider.setTag(pos); + divider.setOnClickListener(this); + mDividers.add(divider); + mInfos.add((TextView)inflater.inflate(R.layout.suggestion_info, null)); + } + + mStripParams = new SuggestionsStripParams(context, attrs, defStyle, mWords, mDividers, + mInfos); + mStripParams.mWordToSaveView.setOnClickListener(this); + + mMoreSuggestionsContainer = inflater.inflate(R.layout.more_suggestions, null); + mMoreSuggestionsView = (MoreSuggestionsView)mMoreSuggestionsContainer + .findViewById(R.id.more_suggestions_view); + mMoreSuggestionsBuilder = new MoreSuggestions.Builder(mMoreSuggestionsView); + mMoreSuggestionsWindow = new PopupWindow(context); + mMoreSuggestionsWindow.setWindowLayoutMode( + ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); + mMoreSuggestionsWindow.setBackgroundDrawable(null); + } + + /** + * A connection back to the input method. + * @param listener + */ + public void setListener(Listener listener, View inputView) { + mListener = listener; + mKeyboardView = inputView.findViewById(R.id.keyboard_view); + } + + public void setSuggestions(SuggestedWords suggestions) { + if (suggestions == null) + return; + mSuggestions = suggestions; + if (mShowingAutoCorrectionInverted) { + mHandler.postUpdateSuggestions(); + } else { + updateSuggestions(); + } + } + + private void updateSuggestions() { + clear(); + if (mSuggestions.size() == 0) + return; + + mStripParams.layout(mSuggestions, mSuggestionsStrip, mSuggestionsPlacer, getWidth()); + } + + private static CharSequence getDebugInfo(SuggestedWords suggestions, int pos) { + if (DBG && pos < suggestions.size()) { + final SuggestedWordInfo wordInfo = suggestions.getInfo(pos); + if (wordInfo != null) { + final CharSequence debugInfo = wordInfo.getDebugString(); + if (!TextUtils.isEmpty(debugInfo)) { + return debugInfo; + } + } + } + return null; + } + + private static void setLayoutWeight(View v, float weight, int height) { + final ViewGroup.LayoutParams lp = v.getLayoutParams(); + if (lp instanceof LinearLayout.LayoutParams) { + final LinearLayout.LayoutParams llp = (LinearLayout.LayoutParams)lp; + llp.weight = weight; + llp.width = 0; + llp.height = height; + } + } + + private static float getTextScaleX(CharSequence text, int maxWidth, TextPaint paint) { + paint.setTextScaleX(1.0f); + final int width = getTextWidth(text, paint); + if (width <= maxWidth) { + return 1.0f; + } + return maxWidth / (float)width; + } + + private static CharSequence getEllipsizedText(CharSequence text, int maxWidth, + TextPaint paint) { + if (text == null) return null; + paint.setTextScaleX(1.0f); + final int width = getTextWidth(text, paint); + if (width <= maxWidth) { + return text; + } + final float scaleX = maxWidth / (float)width; + if (scaleX >= MIN_TEXT_XSCALE) { + paint.setTextScaleX(scaleX); + return text; + } + + // Note that TextUtils.ellipsize() use text-x-scale as 1.0 if ellipsize is needed. To get + // squeezed and ellipsized text, passes enlarged width (maxWidth / MIN_TEXT_XSCALE). + final CharSequence ellipsized = TextUtils.ellipsize( + text, paint, maxWidth / MIN_TEXT_XSCALE, TextUtils.TruncateAt.MIDDLE); + paint.setTextScaleX(MIN_TEXT_XSCALE); + return ellipsized; + } + + private static int getTextWidth(CharSequence text, TextPaint paint) { + if (TextUtils.isEmpty(text)) return 0; + final Typeface savedTypeface = paint.getTypeface(); + paint.setTypeface(getTextTypeface(text)); + final int len = text.length(); + final float[] widths = new float[len]; + final int count = paint.getTextWidths(text, 0, len, widths); + int width = 0; + for (int i = 0; i < count; i++) { + width += Math.round(widths[i] + 0.5f); + } + paint.setTypeface(savedTypeface); + return width; + } + + private static Typeface getTextTypeface(CharSequence text) { + if (!(text instanceof SpannableString)) + return Typeface.DEFAULT; + + final SpannableString ss = (SpannableString)text; + final StyleSpan[] styles = ss.getSpans(0, text.length(), StyleSpan.class); + if (styles.length == 0) + return Typeface.DEFAULT; + + switch (styles[0].getStyle()) { + case Typeface.BOLD: return Typeface.DEFAULT_BOLD; + // TODO: BOLD_ITALIC, ITALIC case? + default: return Typeface.DEFAULT; + } + } + + public void onAutoCorrectionInverted(CharSequence autoCorrectedWord) { + final CharSequence inverted = mStripParams.getInvertedText(autoCorrectedWord); + if (inverted == null) + return; + final TextView tv = mWords.get(1); + tv.setText(inverted); + mShowingAutoCorrectionInverted = true; + } + + public boolean isShowingAddToDictionaryHint() { + return mSuggestionsStrip.getChildCount() > 0 + && mSuggestionsStrip.getChildAt(0) == mStripParams.mWordToSaveView; + } + + public void showAddToDictionaryHint(CharSequence word) { + clear(); + mStripParams.layoutAddToDictionaryHint(word, mSuggestionsStrip, getWidth()); + } + + public boolean dismissAddToDictionaryHint() { + if (isShowingAddToDictionaryHint()) { + clear(); + return true; + } + return false; + } + + public SuggestedWords getSuggestions() { + return mSuggestions; + } + + public void clear() { + mShowingAutoCorrectionInverted = false; + mSuggestionsPlacer.removeAllViews(); + mSuggestionsPlacer.addView(mSuggestionsStrip); + mSuggestionsStrip.removeAllViews(); + mMoreSuggestionsWindow.dismiss(); + } + + private void hidePreview() { + mPreviewPopup.dismiss(); + } + + private void showPreview(View view, CharSequence word) { + if (TextUtils.isEmpty(word)) + return; + + final TextView previewText = mPreviewText; + previewText.setTextColor(mStripParams.mColorTypedWord); + previewText.setText(word); + previewText.measure( + ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); + final int[] offsetInWindow = new int[2]; + view.getLocationInWindow(offsetInWindow); + final int posX = offsetInWindow[0]; + final int posY = offsetInWindow[1] - previewText.getMeasuredHeight(); + final PopupWindow previewPopup = mPreviewPopup; + if (previewPopup.isShowing()) { + previewPopup.update(posX, posY, previewPopup.getWidth(), previewPopup.getHeight()); + } else { + previewPopup.showAtLocation(this, Gravity.NO_GRAVITY, posX, posY); + } + previewText.setVisibility(VISIBLE); + mHandler.postHidePreview(); + } + + private void addToDictionary(CharSequence word) { + if (mListener.addWordToDictionary(word.toString())) { + final CharSequence message = getContext().getString(R.string.added_word, word); + showPreview(mStripParams.mWordToSaveView, message); + } + } + + private final KeyboardActionListener mMoreSuggestionsListener = + new KeyboardActionListener.Adapter() { + @Override + public boolean onCustomRequest(int requestCode) { + final int index = requestCode; + final CharSequence word = mSuggestions.getWord(index); + mListener.pickSuggestionManually(index, word); + mMoreSuggestionsView.dismissMoreKeysPanel(); + return true; + } + + @Override + public void onCancelInput() { + mMoreSuggestionsView.dismissMoreKeysPanel(); + } + }; + + private final MoreKeysPanel.Controller mMoreSuggestionsController = + new MoreKeysPanel.Controller() { + @Override + public boolean dismissMoreKeysPanel() { + if (mMoreSuggestionsWindow.isShowing()) { + mMoreSuggestionsWindow.dismiss(); + return true; + } + return false; + } + }; + + @Override + public boolean onLongClick(View view) { + final SuggestionsStripParams params = mStripParams; + if (params.mMoreSuggestionsAvailable) { + final int stripWidth = getWidth(); + final View container = mMoreSuggestionsContainer; + final int maxWidth = stripWidth - container.getPaddingLeft() + - container.getPaddingRight(); + final DisplayMetrics dm = getContext().getResources().getDisplayMetrics(); + // TODO: Revise how we determine the height + final int maxHeight = dm.heightPixels - mKeyboardView.getHeight() - getHeight() * 3; + final MoreSuggestions.Builder builder = mMoreSuggestionsBuilder; + builder.layout(mSuggestions, params.mSuggestionsCountInStrip, maxWidth, maxHeight); + mMoreSuggestionsView.setKeyboard(builder.build()); + container.measure( + ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); + + final MoreKeysPanel moreKeysPanel = mMoreSuggestionsView; + final int pointX = stripWidth / 2; + final int pointY = 0; + moreKeysPanel.showMoreKeysPanel( + this, mMoreSuggestionsController, pointX, pointY, + mMoreSuggestionsWindow, mMoreSuggestionsListener); + // TODO: Should figure out how to select the pointer tracker correctly. + final PointerTracker tracker = PointerTracker.getPointerTracker(0, moreKeysPanel); + final int translatedX = moreKeysPanel.translateX(tracker.getLastX()); + final int translatedY = moreKeysPanel.translateY(tracker.getLastY()); + tracker.onShowMoreKeysPanel( + translatedX, translatedY, SystemClock.uptimeMillis(), moreKeysPanel); + view.setPressed(false); + // TODO: Should gray out the keyboard here as well? + return true; + } + return false; + } + + @Override + public boolean dispatchTouchEvent(MotionEvent me) { + if (!mMoreSuggestionsWindow.isShowing()) { + return super.dispatchTouchEvent(me); + } + final int action = me.getAction(); + final long eventTime = me.getEventTime(); + final int index = me.getActionIndex(); + final int id = me.getPointerId(index); + final PointerTracker tracker = PointerTracker.getPointerTracker(id, mMoreSuggestionsView); + final int x = mMoreSuggestionsView.translateX((int)me.getX(index)); + final int y = mMoreSuggestionsView.translateY((int)me.getY(index)); + switch (action) { + case MotionEvent.ACTION_DOWN: + case MotionEvent.ACTION_POINTER_DOWN: + tracker.onDownEvent(x, y, eventTime, mMoreSuggestionsView); + break; + case MotionEvent.ACTION_UP: + case MotionEvent.ACTION_POINTER_UP: + tracker.onUpEvent(x, y, eventTime); + break; + case MotionEvent.ACTION_MOVE: + tracker.onMoveEvent(x, y, eventTime); + break; + case MotionEvent.ACTION_CANCEL: + tracker.onCancelEvent(x, y, eventTime); + break; + } + return true; + } + + @Override + public void onClick(View view) { + if (view == mStripParams.mWordToSaveView) { + addToDictionary((CharSequence)view.getTag()); + clear(); + return; + } + + final Object tag = view.getTag(); + if (!(tag instanceof Integer)) + return; + final int index = (Integer) tag; + if (index >= mSuggestions.size()) + return; + + final CharSequence word = mSuggestions.getWord(index); + mListener.pickSuggestionManually(index, word); + } + + @Override + public void onDetachedFromWindow() { + super.onDetachedFromWindow(); + mHandler.cancelAllMessages(); + hidePreview(); + } +} |