LatinIME/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java

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/*
* 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.suggestions;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.style.CharacterStyle;
import android.text.style.StyleSpan;
import android.text.style.UnderlineSpan;
import android.util.AttributeSet;
import android.view.GestureDetector;
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.RelativeLayout;
import android.widget.TextView;
import com.android.inputmethod.keyboard.Keyboard;
import com.android.inputmethod.keyboard.KeyboardSwitcher;
import com.android.inputmethod.keyboard.MainKeyboardView;
import com.android.inputmethod.keyboard.MoreKeysPanel;
import com.android.inputmethod.keyboard.ViewLayoutUtils;
import com.android.inputmethod.latin.AutoCorrection;
import com.android.inputmethod.latin.CollectionUtils;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.ResourceUtils;
import com.android.inputmethod.latin.SuggestedWords;
import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import com.android.inputmethod.latin.Utils;
import com.android.inputmethod.latin.define.ProductionFlag;
import com.android.inputmethod.latin.suggestions.MoreSuggestions.MoreSuggestionsListener;
import com.android.inputmethod.research.ResearchLogger;
import java.util.ArrayList;
public final class SuggestionStripView extends RelativeLayout implements OnClickListener,
OnLongClickListener {
public interface Listener {
public void addWordToUserDictionary(String word);
public void pickSuggestionManually(int index, SuggestedWordInfo word);
}
// The maximum number of suggestions available. See {@link Suggest#mPrefMaxSuggestions}.
public static final int MAX_SUGGESTIONS = 18;
static final boolean DBG = LatinImeLogger.sDBG;
private final ViewGroup mSuggestionsStrip;
MainKeyboardView mMainKeyboardView;
private final View mMoreSuggestionsContainer;
private final MoreSuggestionsView mMoreSuggestionsView;
private final MoreSuggestions.Builder mMoreSuggestionsBuilder;
private final ArrayList<TextView> mWords = CollectionUtils.newArrayList();
private final ArrayList<TextView> mInfos = CollectionUtils.newArrayList();
private final ArrayList<View> mDividers = CollectionUtils.newArrayList();
Listener mListener;
private SuggestedWords mSuggestedWords = SuggestedWords.EMPTY;
private final SuggestionStripViewParams mParams;
private static final float MIN_TEXT_XSCALE = 0.70f;
private static final class SuggestionStripViewParams {
private static final int DEFAULT_SUGGESTIONS_COUNT_IN_STRIP = 3;
private static final float DEFAULT_CENTER_SUGGESTION_PERCENTILE = 0.40f;
private static final int DEFAULT_MAX_MORE_SUGGESTIONS_ROW = 2;
private static final int PUNCTUATIONS_IN_STRIP = 5;
public final int mPadding;
public final int mDividerWidth;
public final int mSuggestionsStripHeight;
public final int mSuggestionsCountInStrip;
public final int mMoreSuggestionsRowHeight;
private int mMaxMoreSuggestionsRow;
public final float mMinMoreSuggestionsWidth;
public final int mMoreSuggestionsBottomGap;
private final ArrayList<TextView> mWords;
private final ArrayList<View> mDividers;
private final ArrayList<TextView> mInfos;
private final int mColorValidTypedWord;
private final int mColorTypedWord;
private final int mColorAutoCorrect;
private final int mColorSuggested;
private final float mAlphaObsoleted;
private final float mCenterSuggestionWeight;
private final int mCenterSuggestionIndex;
private final Drawable mMoreSuggestionsHint;
private static final String MORE_SUGGESTIONS_HINT = "\u2026";
private static final String LEFTWARDS_ARROW = "\u2190";
private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD);
private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan();
private static final int AUTO_CORRECT_BOLD = 0x01;
private static final int AUTO_CORRECT_UNDERLINE = 0x02;
private static final int VALID_TYPED_WORD_BOLD = 0x04;
private final int mSuggestionStripOption;
private final ArrayList<CharSequence> mTexts = CollectionUtils.newArrayList();
public boolean mMoreSuggestionsAvailable;
private final TextView mWordToSaveView;
private final TextView mLeftwardsArrowView;
private final TextView mHintToSaveView;
public SuggestionStripViewParams(final Context context, final AttributeSet attrs,
final int defStyle, final ArrayList<TextView> words, final ArrayList<View> dividers,
final ArrayList<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);
final TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.SuggestionStripView, defStyle, R.style.SuggestionStripViewStyle);
mSuggestionStripOption = a.getInt(
R.styleable.SuggestionStripView_suggestionStripOption, 0);
final float alphaValidTypedWord = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_alphaValidTypedWord, 1.0f);
final float alphaTypedWord = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_alphaTypedWord, 1.0f);
final float alphaAutoCorrect = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_alphaAutoCorrect, 1.0f);
final float alphaSuggested = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_alphaSuggested, 1.0f);
mAlphaObsoleted = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_alphaSuggested, 1.0f);
mColorValidTypedWord = applyAlpha(a.getColor(
R.styleable.SuggestionStripView_colorValidTypedWord, 0), alphaValidTypedWord);
mColorTypedWord = applyAlpha(a.getColor(
R.styleable.SuggestionStripView_colorTypedWord, 0), alphaTypedWord);
mColorAutoCorrect = applyAlpha(a.getColor(
R.styleable.SuggestionStripView_colorAutoCorrect, 0), alphaAutoCorrect);
mColorSuggested = applyAlpha(a.getColor(
R.styleable.SuggestionStripView_colorSuggested, 0), alphaSuggested);
mSuggestionsCountInStrip = a.getInt(
R.styleable.SuggestionStripView_suggestionsCountInStrip,
DEFAULT_SUGGESTIONS_COUNT_IN_STRIP);
mCenterSuggestionWeight = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_centerSuggestionPercentile,
DEFAULT_CENTER_SUGGESTION_PERCENTILE);
mMaxMoreSuggestionsRow = a.getInt(
R.styleable.SuggestionStripView_maxMoreSuggestionsRow,
DEFAULT_MAX_MORE_SUGGESTIONS_ROW);
mMinMoreSuggestionsWidth = ResourceUtils.getFraction(a,
R.styleable.SuggestionStripView_minMoreSuggestionsWidth, 1.0f);
a.recycle();
mMoreSuggestionsHint = getMoreSuggestionsHint(res,
res.getDimension(R.dimen.more_suggestions_hint_text_size), mColorAutoCorrect);
mCenterSuggestionIndex = mSuggestionsCountInStrip / 2;
mMoreSuggestionsBottomGap = res.getDimensionPixelOffset(
R.dimen.more_suggestions_bottom_gap);
mMoreSuggestionsRowHeight = res.getDimensionPixelSize(
R.dimen.more_suggestions_row_height);
final LayoutInflater inflater = LayoutInflater.from(context);
mWordToSaveView = (TextView)inflater.inflate(R.layout.suggestion_word, null);
mLeftwardsArrowView = (TextView)inflater.inflate(R.layout.hint_add_to_dictionary, null);
mHintToSaveView = (TextView)inflater.inflate(R.layout.hint_add_to_dictionary, null);
}
public int getMaxMoreSuggestionsRow() {
return mMaxMoreSuggestionsRow;
}
private int getMoreSuggestionsHeight() {
return mMaxMoreSuggestionsRow * mMoreSuggestionsRowHeight + mMoreSuggestionsBottomGap;
}
public int setMoreSuggestionsHeight(final int remainingHeight) {
final int currentHeight = getMoreSuggestionsHeight();
if (currentHeight <= remainingHeight) {
return currentHeight;
}
mMaxMoreSuggestionsRow = (remainingHeight - mMoreSuggestionsBottomGap)
/ mMoreSuggestionsRowHeight;
final int newHeight = getMoreSuggestionsHeight();
return newHeight;
}
private static Drawable getMoreSuggestionsHint(final Resources res, final float textSize,
final int color) {
final Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTextAlign(Align.CENTER);
paint.setTextSize(textSize);
paint.setColor(color);
final Rect bounds = new Rect();
paint.getTextBounds(MORE_SUGGESTIONS_HINT, 0, MORE_SUGGESTIONS_HINT.length(), bounds);
final int width = Math.round(bounds.width() + 0.5f);
final int height = Math.round(bounds.height() + 0.5f);
final Bitmap buffer = Bitmap.createBitmap(
width, (height * 3 / 2), Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(buffer);
canvas.drawText(MORE_SUGGESTIONS_HINT, width / 2, height, paint);
return new BitmapDrawable(res, buffer);
}
private CharSequence getStyledSuggestionWord(final SuggestedWords suggestedWords,
final int pos) {
final String word = suggestedWords.getWord(pos);
final boolean isAutoCorrect = pos == 1 && suggestedWords.willAutoCorrect();
final boolean isTypedWordValid = pos == 0 && suggestedWords.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 int getWordPosition(final int index, final SuggestedWords suggestedWords) {
// TODO: This works for 3 suggestions. Revisit this algorithm when there are 5 or more
// suggestions.
final int centerPos = suggestedWords.willAutoCorrect() ? 1 : 0;
if (index == mCenterSuggestionIndex) {
return centerPos;
} else if (index == centerPos) {
return mCenterSuggestionIndex;
} else {
return index;
}
}
private int getSuggestionTextColor(final int index, final SuggestedWords suggestedWords,
final int pos) {
// TODO: Need to revisit this logic with bigram suggestions
final boolean isSuggested = (pos != 0);
final int color;
if (index == mCenterSuggestionIndex && suggestedWords.willAutoCorrect()) {
color = mColorAutoCorrect;
} else if (index == mCenterSuggestionIndex && suggestedWords.mTypedWordValid) {
color = mColorValidTypedWord;
} else if (isSuggested) {
color = mColorSuggested;
} else {
color = mColorTypedWord;
}
if (LatinImeLogger.sDBG && suggestedWords.size() > 1) {
// If we auto-correct, then the autocorrection is in slot 0 and the typed word
// is in slot 1.
if (index == mCenterSuggestionIndex
&& AutoCorrection.shouldBlockAutoCorrectionBySafetyNet(
suggestedWords.getWord(1), suggestedWords.getWord(0))) {
return 0xFFFF0000;
}
}
if (suggestedWords.mIsObsoleteSuggestions && isSuggested) {
return applyAlpha(color, mAlphaObsoleted);
} 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));
}
private static void addDivider(final ViewGroup stripView, final View divider) {
stripView.addView(divider);
final LinearLayout.LayoutParams params =
(LinearLayout.LayoutParams)divider.getLayoutParams();
params.gravity = Gravity.CENTER;
}
public void layout(final SuggestedWords suggestedWords, final ViewGroup stripView,
final ViewGroup placer, final int stripWidth) {
if (suggestedWords.mIsPunctuationSuggestions) {
layoutPunctuationSuggestions(suggestedWords, stripView);
return;
}
final int countInStrip = mSuggestionsCountInStrip;
setupTexts(suggestedWords, countInStrip);
mMoreSuggestionsAvailable = (suggestedWords.size() > countInStrip);
int x = 0;
for (int index = 0; index < countInStrip; index++) {
final int pos = getWordPosition(index, suggestedWords);
if (index != 0) {
final View divider = mDividers.get(pos);
// Add divider if this isn't the left most suggestion in suggestions strip.
addDivider(stripView, 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, suggestedWords, 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 && pos < suggestedWords.size()) {
final String debugInfo = Utils.getDebugInfo(suggestedWords, 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();
ViewLayoutUtils.placeViewAt(
info, x - infoWidth, y, infoWidth, info.getMeasuredHeight());
}
}
}
}
private int getSuggestionWidth(final int index, final 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(final 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(final SuggestedWords suggestedWords, final int countInStrip) {
mTexts.clear();
final int count = Math.min(suggestedWords.size(), countInStrip);
for (int pos = 0; pos < count; pos++) {
final CharSequence styled = getStyledSuggestionWord(suggestedWords, pos);
mTexts.add(styled);
}
for (int pos = count; pos < countInStrip; pos++) {
// Make this inactive for touches in layout().
mTexts.add(null);
}
}
private void layoutPunctuationSuggestions(final SuggestedWords suggestedWords,
final ViewGroup stripView) {
final int countInStrip = Math.min(suggestedWords.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.
addDivider(stripView, mDividers.get(index));
}
final TextView word = mWords.get(index);
word.setEnabled(true);
word.setTextColor(mColorAutoCorrect);
final String text = suggestedWords.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(final String word, final ViewGroup stripView,
final int stripWidth, final CharSequence hintText, final OnClickListener listener) {
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 leftArrowView = mLeftwardsArrowView;
leftArrowView.setTextColor(mColorAutoCorrect);
leftArrowView.setText(LEFTWARDS_ARROW);
stripView.addView(leftArrowView);
final TextView hintView = mHintToSaveView;
hintView.setGravity(Gravity.LEFT | Gravity.CENTER_VERTICAL);
hintView.setTextColor(mColorAutoCorrect);
final int hintWidth = width - wordWidth - leftArrowView.getWidth();
final float hintScaleX = getTextScaleX(hintText, hintWidth, hintView.getPaint());
hintView.setText(hintText);
hintView.setTextScaleX(hintScaleX);
stripView.addView(hintView);
setLayoutWeight(
hintView, 1.0f - mCenterSuggestionWeight, ViewGroup.LayoutParams.MATCH_PARENT);
wordView.setOnClickListener(listener);
leftArrowView.setOnClickListener(listener);
hintView.setOnClickListener(listener);
}
public CharSequence getAddToDictionaryWord() {
return (CharSequence)mWordToSaveView.getTag();
}
public boolean isAddToDictionaryShowing(final View v) {
return v == mWordToSaveView || v == mHintToSaveView || v == mLeftwardsArrowView;
}
private static void setLayoutWeight(final View v, final float weight, final 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(final CharSequence text, final int maxWidth,
final 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(final CharSequence text, final int maxWidth,
final 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(final CharSequence text, final 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(final 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;
}
}
}
/**
* Construct a {@link SuggestionStripView} for showing suggestions to be picked by the user.
* @param context
* @param attrs
*/
public SuggestionStripView(final Context context, final AttributeSet attrs) {
this(context, attrs, R.attr.suggestionStripViewStyle);
}
public SuggestionStripView(final Context context, final AttributeSet attrs,
final int defStyle) {
super(context, attrs, defStyle);
final LayoutInflater inflater = LayoutInflater.from(context);
inflater.inflate(R.layout.suggestions_strip, this);
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));
}
mParams = new SuggestionStripViewParams(
context, attrs, defStyle, mWords, mDividers, mInfos);
mMoreSuggestionsContainer = inflater.inflate(R.layout.more_suggestions, null);
mMoreSuggestionsView = (MoreSuggestionsView)mMoreSuggestionsContainer
.findViewById(R.id.more_suggestions_view);
mMoreSuggestionsBuilder = new MoreSuggestions.Builder(context, mMoreSuggestionsView);
final Resources res = context.getResources();
mMoreSuggestionsModalTolerance = res.getDimensionPixelOffset(
R.dimen.more_suggestions_modal_tolerance);
mMoreSuggestionsSlidingDetector = new GestureDetector(
context, mMoreSuggestionsSlidingListener);
}
/**
* A connection back to the input method.
* @param listener
*/
public void setListener(final Listener listener, final View inputView) {
mListener = listener;
mMainKeyboardView = (MainKeyboardView)inputView.findViewById(R.id.keyboard_view);
}
public void setSuggestions(final SuggestedWords suggestedWords) {
clear();
mSuggestedWords = suggestedWords;
mParams.layout(mSuggestedWords, mSuggestionsStrip, this, getWidth());
if (ProductionFlag.USES_DEVELOPMENT_ONLY_DIAGNOSTICS) {
ResearchLogger.suggestionStripView_setSuggestions(mSuggestedWords);
}
}
public int setMoreSuggestionsHeight(final int remainingHeight) {
return mParams.setMoreSuggestionsHeight(remainingHeight);
}
public boolean isShowingAddToDictionaryHint() {
return mSuggestionsStrip.getChildCount() > 0
&& mParams.isAddToDictionaryShowing(mSuggestionsStrip.getChildAt(0));
}
public void showAddToDictionaryHint(final String word, final CharSequence hintText) {
clear();
mParams.layoutAddToDictionaryHint(word, mSuggestionsStrip, getWidth(), hintText, this);
}
public boolean dismissAddToDictionaryHint() {
if (isShowingAddToDictionaryHint()) {
clear();
return true;
}
return false;
}
public void clear() {
mSuggestionsStrip.removeAllViews();
removeAllViews();
addView(mSuggestionsStrip);
dismissMoreSuggestions();
}
private final MoreSuggestionsListener mMoreSuggestionsListener = new MoreSuggestionsListener() {
@Override
public void onSuggestionSelected(final int index, final SuggestedWordInfo wordInfo) {
mListener.pickSuggestionManually(index, wordInfo);
dismissMoreSuggestions();
}
@Override
public void onCancelInput() {
dismissMoreSuggestions();
}
};
private final MoreKeysPanel.Controller mMoreSuggestionsController =
new MoreKeysPanel.Controller() {
@Override
public boolean onDismissMoreKeysPanel() {
return mMainKeyboardView.onDismissMoreKeysPanel();
}
@Override
public void onShowMoreKeysPanel(final MoreKeysPanel panel) {
mMainKeyboardView.onShowMoreKeysPanel(panel);
}
@Override
public void onCancelMoreKeysPanel() {
dismissMoreSuggestions();
}
};
boolean dismissMoreSuggestions() {
return mMoreSuggestionsView.dismissMoreKeysPanel();
}
@Override
public boolean onLongClick(final View view) {
KeyboardSwitcher.getInstance().hapticAndAudioFeedback(Constants.NOT_A_CODE);
return showMoreSuggestions();
}
boolean showMoreSuggestions() {
final Keyboard parentKeyboard = KeyboardSwitcher.getInstance().getKeyboard();
if (parentKeyboard == null) {
return false;
}
final SuggestionStripViewParams params = mParams;
if (!params.mMoreSuggestionsAvailable) {
return false;
}
final int stripWidth = getWidth();
final View container = mMoreSuggestionsContainer;
final int maxWidth = stripWidth - container.getPaddingLeft() - container.getPaddingRight();
final MoreSuggestions.Builder builder = mMoreSuggestionsBuilder;
builder.layout(mSuggestedWords, params.mSuggestionsCountInStrip, maxWidth,
(int)(maxWidth * params.mMinMoreSuggestionsWidth),
params.getMaxMoreSuggestionsRow(), parentKeyboard);
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 = -params.mMoreSuggestionsBottomGap;
moreKeysPanel.showMoreKeysPanel(this, mMoreSuggestionsController, pointX, pointY,
mMoreSuggestionsListener);
mMoreSuggestionsMode = MORE_SUGGESTIONS_CHECKING_MODAL_OR_SLIDING;
mOriginX = mLastX;
mOriginY = mLastY;
for (int i = 0; i < params.mSuggestionsCountInStrip; i++) {
mWords.get(i).setPressed(false);
}
return true;
}
// Working variables for onLongClick and dispatchTouchEvent.
private int mMoreSuggestionsMode = MORE_SUGGESTIONS_IN_MODAL_MODE;
private static final int MORE_SUGGESTIONS_IN_MODAL_MODE = 0;
private static final int MORE_SUGGESTIONS_CHECKING_MODAL_OR_SLIDING = 1;
private static final int MORE_SUGGESTIONS_IN_SLIDING_MODE = 2;
private int mLastX;
private int mLastY;
private int mOriginX;
private int mOriginY;
private final int mMoreSuggestionsModalTolerance;
private final GestureDetector mMoreSuggestionsSlidingDetector;
private final GestureDetector.OnGestureListener mMoreSuggestionsSlidingListener =
new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onScroll(MotionEvent down, MotionEvent me, float deltaX, float deltaY) {
final float dy = me.getY() - down.getY();
if (deltaY > 0 && dy < 0) {
return showMoreSuggestions();
}
return false;
}
};
@Override
public boolean dispatchTouchEvent(final MotionEvent me) {
if (!mMoreSuggestionsView.isShowingInParent()) {
mLastX = (int)me.getX();
mLastY = (int)me.getY();
if (mMoreSuggestionsSlidingDetector.onTouchEvent(me)) {
return true;
}
return super.dispatchTouchEvent(me);
}
final MoreKeysPanel moreKeysPanel = mMoreSuggestionsView;
final int action = me.getAction();
final long eventTime = me.getEventTime();
final int index = me.getActionIndex();
final int id = me.getPointerId(index);
final int x = (int)me.getX(index);
final int y = (int)me.getY(index);
final int translatedX = moreKeysPanel.translateX(x);
final int translatedY = moreKeysPanel.translateY(y);
if (mMoreSuggestionsMode == MORE_SUGGESTIONS_CHECKING_MODAL_OR_SLIDING) {
if (Math.abs(x - mOriginX) >= mMoreSuggestionsModalTolerance
|| mOriginY - y >= mMoreSuggestionsModalTolerance) {
// Decided to be in the sliding input mode only when the touch point has been moved
// upward.
mMoreSuggestionsMode = MORE_SUGGESTIONS_IN_SLIDING_MODE;
} else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP) {
// Decided to be in the modal input mode
mMoreSuggestionsMode = MORE_SUGGESTIONS_IN_MODAL_MODE;
mMoreSuggestionsView.adjustVerticalCorrectionForModalMode();
}
return true;
}
// MORE_SUGGESTIONS_IN_SLIDING_MODE
mMoreSuggestionsView.processMotionEvent(action, translatedX, translatedY, id, eventTime);
return true;
}
@Override
public void onClick(final View view) {
if (mParams.isAddToDictionaryShowing(view)) {
mListener.addWordToUserDictionary(mParams.getAddToDictionaryWord().toString());
clear();
return;
}
final Object tag = view.getTag();
if (!(tag instanceof Integer))
return;
final int index = (Integer) tag;
if (index >= mSuggestedWords.size())
return;
final SuggestedWordInfo wordInfo = mSuggestedWords.getInfo(index);
mListener.pickSuggestionManually(index, wordInfo);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
dismissMoreSuggestions();
}
}