| /* |
| * 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.ex.chips; |
| |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Canvas; |
| import android.graphics.Matrix; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.graphics.drawable.BitmapDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.text.Editable; |
| import android.text.Layout; |
| import android.text.Spannable; |
| import android.text.SpannableString; |
| import android.text.Spanned; |
| import android.text.TextPaint; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.text.method.QwertyKeyListener; |
| import android.text.style.ImageSpan; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.ActionMode; |
| import android.view.KeyEvent; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ActionMode.Callback; |
| import android.widget.AdapterView; |
| import android.widget.AdapterView.OnItemClickListener; |
| import android.widget.ListPopupWindow; |
| import android.widget.ListView; |
| import android.widget.MultiAutoCompleteTextView; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * RecipientEditTextView is an auto complete text view for use with applications |
| * that use the new Chips UI for addressing a message to recipients. |
| */ |
| public class RecipientEditTextView extends MultiAutoCompleteTextView |
| implements OnItemClickListener, Callback { |
| |
| private static final String TAG = "RecipientEditTextView"; |
| |
| // TODO: get correct number/ algorithm from with UX. |
| private static final int CHIP_LIMIT = 2; |
| |
| private static final int INVALID_CONTACT = -1; |
| |
| // TODO: get correct size from UX. |
| private static final float MORE_WIDTH_FACTOR = 0.25f; |
| |
| private Drawable mChipBackground = null; |
| |
| private Drawable mChipDelete = null; |
| |
| private int mChipPadding; |
| |
| private Tokenizer mTokenizer; |
| |
| private Drawable mChipBackgroundPressed; |
| |
| private RecipientChip mSelectedChip; |
| |
| private int mChipDeleteWidth; |
| |
| private int mAlternatesLayout; |
| |
| private Bitmap mDefaultContactPhoto; |
| |
| private ImageSpan mMoreChip; |
| |
| private int mMoreString; |
| |
| private ArrayList<RecipientChip> mRemovedSpans; |
| |
| private float mChipHeight; |
| |
| private float mChipFontSize; |
| |
| private Validator mValidator; |
| |
| private Drawable mInvalidChipBackground; |
| |
| private Handler mHandler; |
| |
| private static int DISMISS = "dismiss".hashCode(); |
| |
| private static final long DISMISS_DELAY = 300; |
| |
| private int mPendingChipsCount = 0; |
| |
| private static int sSelectedTextColor = -1; |
| |
| private static final char COMMIT_CHAR_COMMA = ','; |
| |
| private static final char COMMIT_CHAR_SEMICOLON = ';'; |
| |
| public RecipientEditTextView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| if (sSelectedTextColor == -1) { |
| sSelectedTextColor = context.getResources().getColor(android.R.color.white); |
| } |
| setSuggestionsEnabled(false); |
| setOnItemClickListener(this); |
| setCustomSelectionActionModeCallback(this); |
| // When the user starts typing, make sure we unselect any selected |
| // chips. |
| addTextChangedListener(new TextWatcher() { |
| @Override |
| public void afterTextChanged(Editable s) { |
| if (mSelectedChip != null) { |
| setCursorVisible(true); |
| setSelection(getText().length()); |
| clearSelectedChip(); |
| } |
| } |
| |
| @Override |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| int length = s.length(); |
| // Make sure there is content there to parse and that it is not just |
| // the commit character. |
| if (length > 1) { |
| char last = s.charAt(length() - 1); |
| if (last == COMMIT_CHAR_SEMICOLON || last == COMMIT_CHAR_COMMA) { |
| commitDefault(); |
| } |
| } |
| } |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| // Do nothing. |
| } |
| }); |
| mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| if (msg.what == DISMISS) { |
| ((ListPopupWindow)msg.obj).dismiss(); |
| return; |
| } |
| super.handleMessage(msg); |
| } |
| }; |
| } |
| |
| @Override |
| public void onSelectionChanged(int start, int end) { |
| // When selection changes, see if it is inside the chips area. |
| // If so, move the cursor back after the chips again. |
| Spannable span = getSpannable(); |
| int textLength = getText().length(); |
| RecipientChip[] chips = span.getSpans(start, textLength, RecipientChip.class); |
| if (chips != null && chips.length > 0) { |
| if (chips != null && chips.length > 0) { |
| // Grab the last chip and set the cursor to after it. |
| setSelection(Math.min(chips[chips.length - 1].getChipEnd() + 1, textLength)); |
| } |
| } |
| super.onSelectionChanged(start, end); |
| } |
| |
| /** |
| * Convenience method: Append the specified text slice to the TextView's |
| * display buffer, upgrading it to BufferType.EDITABLE if it was |
| * not already editable. Commas are excluded as they are added automatically |
| * by the view. |
| */ |
| @Override |
| public void append(CharSequence text, int start, int end) { |
| super.append(text, start, end); |
| if (!TextUtils.isEmpty(text) && TextUtils.getTrimmedLength(text) > 0) { |
| final String displayString = (String) text; |
| int seperatorPos = displayString.indexOf(COMMIT_CHAR_COMMA); |
| if (seperatorPos != 0 && !TextUtils.isEmpty(displayString) |
| && TextUtils.getTrimmedLength(displayString) > 0) { |
| mPendingChipsCount++; |
| } |
| } |
| } |
| |
| @Override |
| public void onFocusChanged(boolean hasFocus, int direction, Rect previous) { |
| if (!hasFocus) { |
| shrink(); |
| // Reset any pending chips as they would have been handled |
| // when the field lost focus. |
| mPendingChipsCount = 0; |
| } else { |
| expand(); |
| } |
| super.onFocusChanged(hasFocus, direction, previous); |
| } |
| |
| private void shrink() { |
| if (mSelectedChip != null) { |
| clearSelectedChip(); |
| } else { |
| commitDefault(); |
| } |
| mMoreChip = createMoreChip(); |
| } |
| |
| private void expand() { |
| removeMoreChip(); |
| setCursorVisible(true); |
| Editable text = getText(); |
| setSelection(text != null && text.length() > 0 ? text.length() : 0); |
| } |
| |
| private CharSequence ellipsizeText(CharSequence text, TextPaint paint, float maxWidth) { |
| paint.setTextSize(mChipFontSize); |
| if (maxWidth <= 0 && Log.isLoggable(TAG, Log.DEBUG)) { |
| Log.d(TAG, "Max width is negative: " + maxWidth); |
| } |
| return TextUtils.ellipsize(text, paint, maxWidth, |
| TextUtils.TruncateAt.END); |
| } |
| |
| private Bitmap createSelectedChip(RecipientEntry contact, TextPaint paint, Layout layout) { |
| // Ellipsize the text so that it takes AT MOST the entire width of the |
| // autocomplete text entry area. Make sure to leave space for padding |
| // on the sides. |
| int height = (int) mChipHeight; |
| int deleteWidth = height; |
| CharSequence ellipsizedText = ellipsizeText(contact.getDisplayName(), paint, |
| calculateAvailableWidth(true) - deleteWidth); |
| |
| // Make sure there is a minimum chip width so the user can ALWAYS |
| // tap a chip without difficulty. |
| int width = Math.max(deleteWidth * 2, (int) Math.floor(paint.measureText(ellipsizedText, 0, |
| ellipsizedText.length())) |
| + (mChipPadding * 2) + deleteWidth); |
| |
| // Create the background of the chip. |
| Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(tmpBitmap); |
| if (mChipBackgroundPressed != null) { |
| mChipBackgroundPressed.setBounds(0, 0, width, height); |
| mChipBackgroundPressed.draw(canvas); |
| paint.setColor(sSelectedTextColor); |
| // Align the display text with where the user enters text. |
| canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding, height |
| - Math.abs(height - mChipFontSize)/2, paint); |
| // Make the delete a square. |
| mChipDelete.setBounds(width - deleteWidth, 0, width, height); |
| mChipDelete.draw(canvas); |
| } else { |
| Log.w(TAG, "Unable to draw a background for the chips as it was never set"); |
| } |
| return tmpBitmap; |
| } |
| |
| |
| /** |
| * Get the background drawable for a RecipientChip. |
| */ |
| public Drawable getChipBackground(RecipientEntry contact) { |
| return mValidator != null && mValidator.isValid(contact.getDestination()) ? |
| mChipBackground : mInvalidChipBackground; |
| } |
| |
| private Bitmap createUnselectedChip(RecipientEntry contact, TextPaint paint, Layout layout) { |
| // Ellipsize the text so that it takes AT MOST the entire width of the |
| // autocomplete text entry area. Make sure to leave space for padding |
| // on the sides. |
| int height = (int) mChipHeight; |
| int iconWidth = height; |
| CharSequence ellipsizedText = ellipsizeText(contact.getDisplayName(), paint, |
| calculateAvailableWidth(false) - iconWidth); |
| // Make sure there is a minimum chip width so the user can ALWAYS |
| // tap a chip without difficulty. |
| int width = Math.max(iconWidth * 2, (int) Math.floor(paint.measureText(ellipsizedText, 0, |
| ellipsizedText.length())) |
| + (mChipPadding * 2) + iconWidth); |
| |
| // Create the background of the chip. |
| Bitmap tmpBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(tmpBitmap); |
| Drawable background = getChipBackground(contact); |
| if (background != null) { |
| background.setBounds(0, 0, width, height); |
| background.draw(canvas); |
| |
| // Don't draw photos for recipients that have been typed in. |
| if (contact.getContactId() != INVALID_CONTACT) { |
| byte[] photoBytes = contact.getPhotoBytes(); |
| // There may not be a photo yet if anything but the first contact address |
| // was selected. |
| if (photoBytes == null && contact.getPhotoThumbnailUri() != null) { |
| // TODO: cache this in the recipient entry? |
| ((BaseRecipientAdapter) getAdapter()).fetchPhoto(contact, contact |
| .getPhotoThumbnailUri()); |
| photoBytes = contact.getPhotoBytes(); |
| } |
| |
| Bitmap photo; |
| if (photoBytes != null) { |
| photo = BitmapFactory.decodeByteArray(photoBytes, 0, photoBytes.length); |
| } else { |
| // TODO: can the scaled down default photo be cached? |
| photo = mDefaultContactPhoto; |
| } |
| // Draw the photo on the left side. |
| Matrix matrix = new Matrix(); |
| RectF src = new RectF(0, 0, photo.getWidth(), photo.getHeight()); |
| RectF dst = new RectF(0, 0, iconWidth, height); |
| matrix.setRectToRect(src, dst, Matrix.ScaleToFit.CENTER); |
| canvas.drawBitmap(photo, matrix, paint); |
| } else { |
| // Don't leave any space for the icon. It isn't being drawn. |
| iconWidth = 0; |
| } |
| |
| // Align the display text with where the user enters text. |
| canvas.drawText(ellipsizedText, 0, ellipsizedText.length(), mChipPadding + iconWidth, |
| height - Math.abs(height - mChipFontSize) / 2, paint); |
| } else { |
| Log.w(TAG, "Unable to draw a background for the chips as it was never set"); |
| } |
| return tmpBitmap; |
| } |
| |
| public RecipientChip constructChipSpan(RecipientEntry contact, int offset, boolean pressed) |
| throws NullPointerException { |
| if (mChipBackground == null) { |
| throw new NullPointerException( |
| "Unable to render any chips as setChipDimensions was not called."); |
| } |
| Layout layout = getLayout(); |
| int line = 0; |
| int lineTop = getTop(); |
| |
| TextPaint paint = getPaint(); |
| float defaultSize = paint.getTextSize(); |
| int defaultColor = paint.getColor(); |
| |
| Bitmap tmpBitmap; |
| if (pressed) { |
| tmpBitmap = createSelectedChip(contact, paint, layout); |
| |
| } else { |
| tmpBitmap = createUnselectedChip(contact, paint, layout); |
| } |
| |
| // Get the location of the widget so we can properly offset |
| // the anchor for each chip. |
| int[] xy = new int[2]; |
| getLocationOnScreen(xy); |
| // Pass the full text, un-ellipsized, to the chip. |
| Drawable result = new BitmapDrawable(getResources(), tmpBitmap); |
| result.setBounds(0, 0, tmpBitmap.getWidth(), tmpBitmap.getHeight()); |
| RecipientChip recipientChip = new RecipientChip(result, contact, offset); |
| // Return text to the original size. |
| paint.setTextSize(defaultSize); |
| paint.setColor(defaultColor); |
| return recipientChip; |
| } |
| |
| /** |
| * Calculate the bottom of the line the chip will be located on using: |
| * 1) which line the chip appears on |
| * 2) the height of a line in the autocomplete view vs the heigt of a chip |
| * 3) padding built into the edit text view will move the bottom position |
| * 4) the position of the autocomplete view on the screen, taking into account |
| * that any top padding will move this down visually |
| */ |
| private int calculateLineBottom(int yOffset, int line, int chipHeight) { |
| int bottomPadding = 0; |
| if (line == getLineCount() - 1) { |
| bottomPadding += getPaddingBottom(); |
| } |
| return yOffset + ((line + 1) * (int)mChipHeight) + getPaddingTop() + bottomPadding; |
| } |
| |
| /** |
| * Get the max amount of space a chip can take up. The formula takes into |
| * account the width of the EditTextView, any view padding, and padding |
| * that will be added to the chip. |
| */ |
| private float calculateAvailableWidth(boolean pressed) { |
| return getWidth() - getPaddingLeft() - getPaddingRight() - (mChipPadding * 2); |
| } |
| |
| /** |
| * Set all chip dimensions and resources. This has to be done from the |
| * application as this is a static library. |
| * @param chipBackground |
| * @param chipBackgroundPressed |
| * @param invalidChip |
| * @param chipDelete |
| * @param defaultContact |
| * @param moreResource |
| * @param alternatesLayout |
| * @param chipHeight |
| * @param padding Padding around the text in a chip |
| */ |
| public void setChipDimensions(Drawable chipBackground, Drawable chipBackgroundPressed, |
| Drawable invalidChip, Drawable chipDelete, Bitmap defaultContact, int moreResource, |
| int alternatesLayout, float chipHeight, float padding, |
| float chipFontSize) { |
| mChipBackground = chipBackground; |
| mChipBackgroundPressed = chipBackgroundPressed; |
| mChipDelete = chipDelete; |
| mChipPadding = (int) padding; |
| mAlternatesLayout = alternatesLayout; |
| mDefaultContactPhoto = defaultContact; |
| mMoreString = moreResource; |
| mChipHeight = chipHeight; |
| mChipFontSize = chipFontSize; |
| mInvalidChipBackground = invalidChip; |
| } |
| |
| @Override |
| public void onSizeChanged(int width, int height, int oldw, int oldh) { |
| super.onSizeChanged(width, height, oldw, oldh); |
| // Check for any pending tokens created before layout had been completed |
| // on the view. |
| if (width != 0 && height != 0 && mPendingChipsCount > 0) { |
| Editable editable = getText(); |
| // Tokenize! |
| int startingPos = 0; |
| while (startingPos < editable.length() && mPendingChipsCount > 0) { |
| int tokenEnd = mTokenizer.findTokenEnd(editable, startingPos); |
| int tokenStart = mTokenizer.findTokenStart(editable, tokenEnd); |
| if (findChip(tokenStart) == null) { |
| // Always include seperators with the token to the left. |
| if (tokenEnd < editable.length() - 1 |
| && editable.charAt(tokenEnd) == COMMIT_CHAR_COMMA) { |
| tokenEnd++; |
| } |
| startingPos = tokenEnd; |
| String token = (String) editable.toString().substring(tokenStart, tokenEnd); |
| int seperatorPos = token.indexOf(COMMIT_CHAR_COMMA); |
| if (seperatorPos != -1) { |
| token = token.substring(0, seperatorPos); |
| } |
| editable.replace(tokenStart, tokenEnd, createChip(RecipientEntry |
| .constructFakeEntry(token), false)); |
| } |
| mPendingChipsCount--; |
| } |
| mPendingChipsCount = 0; |
| } |
| } |
| |
| @Override |
| public void setTokenizer(Tokenizer tokenizer) { |
| mTokenizer = tokenizer; |
| super.setTokenizer(mTokenizer); |
| } |
| |
| @Override |
| public void setValidator(Validator validator) { |
| mValidator = validator; |
| super.setValidator(validator); |
| } |
| |
| /** |
| * We cannot use the default mechanism for replaceText. Instead, |
| * we override onItemClickListener so we can get all the associated |
| * contact information including display text, address, and id. |
| */ |
| @Override |
| protected void replaceText(CharSequence text) { |
| return; |
| } |
| |
| /** |
| * Dismiss any selected chips when the back key is pressed. |
| */ |
| @Override |
| public boolean onKeyPreIme(int keyCode, KeyEvent event) { |
| if (keyCode == KeyEvent.KEYCODE_BACK) { |
| clearSelectedChip(); |
| } |
| return super.onKeyPreIme(keyCode, event); |
| } |
| |
| /** |
| * Monitor key presses in this view to see if the user types |
| * any commit keys, which consist of ENTER, TAB, or DPAD_CENTER. |
| * If the user has entered text that has contact matches and types |
| * a commit key, create a chip from the topmost matching contact. |
| * If the user has entered text that has no contact matches and types |
| * a commit key, then create a chip from the text they have entered. |
| */ |
| @Override |
| public boolean onKeyUp(int keyCode, KeyEvent event) { |
| switch (keyCode) { |
| case KeyEvent.KEYCODE_ENTER: |
| case KeyEvent.KEYCODE_DPAD_CENTER: |
| case KeyEvent.KEYCODE_TAB: |
| if (event.hasNoModifiers()) { |
| if (commitDefault()) { |
| return true; |
| } |
| } |
| break; |
| } |
| return super.onKeyUp(keyCode, event); |
| } |
| |
| /** |
| * Create a chip from the default selection. If the popup is showing, the |
| * default is the first item in the popup suggestions list. Otherwise, it is |
| * whatever the user had typed in. End represents where the the tokenizer |
| * should search for a token to turn into a chip. |
| * @return If a chip was created from a real contact. |
| */ |
| private boolean commitDefault() { |
| Editable editable = getText(); |
| boolean enough = enoughToFilter(); |
| boolean shouldSubmitAtPosition = false; |
| int end = getSelectionEnd(); |
| int start = mTokenizer.findTokenStart(editable, end); |
| if (enough) { |
| RecipientChip[] chips = getSpannable().getSpans(start, end, RecipientChip.class); |
| if ((chips == null || chips.length == 0)) { |
| // There's something being filtered or typed that has not been |
| // completed yet. |
| shouldSubmitAtPosition = true; |
| } |
| } |
| |
| if (shouldSubmitAtPosition) { |
| if (getAdapter().getCount() > 0) { |
| // choose the first entry. |
| submitItemAtPosition(0); |
| dismissDropDown(); |
| return true; |
| } else { |
| String text = editable.toString().substring(start, end); |
| clearComposingText(); |
| if (text != null && text.length() > 0 && !text.equals(" ")) { |
| text = removeCommitChars(text); |
| RecipientEntry entry = RecipientEntry.constructFakeEntry(text); |
| QwertyKeyListener.markAsReplaced(editable, start, end, ""); |
| editable.replace(start, end, createChip(entry, false)); |
| dismissDropDown(); |
| } |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| private String removeCommitChars(String text) { |
| int commitCharPosition = text.indexOf(COMMIT_CHAR_COMMA); |
| if (commitCharPosition != -1) { |
| text = text.substring(0, commitCharPosition); |
| } |
| commitCharPosition = text.indexOf(COMMIT_CHAR_SEMICOLON); |
| if (commitCharPosition != -1) { |
| text = text.substring(0, commitCharPosition); |
| } |
| return text; |
| } |
| |
| /** |
| * If there is a selected chip, delegate the key events |
| * to the selected chip. |
| */ |
| @Override |
| public boolean onKeyDown(int keyCode, KeyEvent event) { |
| if (mSelectedChip != null) { |
| mSelectedChip.onKeyDown(keyCode, event); |
| } |
| |
| if (keyCode == KeyEvent.KEYCODE_ENTER && event.hasNoModifiers()) { |
| return true; |
| } |
| |
| return super.onKeyDown(keyCode, event); |
| } |
| |
| private Spannable getSpannable() { |
| return (Spannable) getText(); |
| } |
| |
| /** |
| * Instead of filtering on the entire contents of the edit box, |
| * this subclass method filters on the range from |
| * {@link Tokenizer#findTokenStart} to {@link #getSelectionEnd} |
| * if the length of that range meets or exceeds {@link #getThreshold} |
| * and makes sure that the range is not already a Chip. |
| */ |
| @Override |
| protected void performFiltering(CharSequence text, int keyCode) { |
| if (enoughToFilter()) { |
| int end = getSelectionEnd(); |
| int start = mTokenizer.findTokenStart(text, end); |
| // If this is a RecipientChip, don't filter |
| // on its contents. |
| Spannable span = getSpannable(); |
| RecipientChip[] chips = span.getSpans(start, end, RecipientChip.class); |
| if (chips != null && chips.length > 0) { |
| return; |
| } |
| } |
| super.performFiltering(text, keyCode); |
| } |
| |
| private void clearSelectedChip() { |
| if (mSelectedChip != null) { |
| mSelectedChip.unselectChip(); |
| mSelectedChip = null; |
| } |
| setCursorVisible(true); |
| } |
| |
| /** |
| * Monitor touch events in the RecipientEditTextView. |
| * If the view does not have focus, any tap on the view |
| * will just focus the view. If the view has focus, determine |
| * if the touch target is a recipient chip. If it is and the chip |
| * is not selected, select it and clear any other selected chips. |
| * If it isn't, then select that chip. |
| */ |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| if (!isFocused()) { |
| // Ignore any chip taps until this view is focused. |
| return super.onTouchEvent(event); |
| } |
| |
| boolean handled = super.onTouchEvent(event); |
| int action = event.getAction(); |
| boolean chipWasSelected = false; |
| |
| if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { |
| float x = event.getX(); |
| float y = event.getY(); |
| int offset = putOffsetInRange(getOffsetForPosition(x, y)); |
| RecipientChip currentChip = findChip(offset); |
| if (currentChip != null) { |
| if (action == MotionEvent.ACTION_UP) { |
| if (mSelectedChip != null && mSelectedChip != currentChip) { |
| clearSelectedChip(); |
| mSelectedChip = currentChip.selectChip(); |
| } else if (mSelectedChip == null) { |
| // Selection may have moved due to the tap event, |
| // but make sure we correctly reset selection to the |
| // end so that any unfinished chips are committed. |
| setSelection(getText().length()); |
| commitDefault(); |
| mSelectedChip = currentChip.selectChip(); |
| } else { |
| mSelectedChip.onClick(this, offset, x, y); |
| } |
| } |
| chipWasSelected = true; |
| } |
| } |
| if (action == MotionEvent.ACTION_UP && !chipWasSelected) { |
| clearSelectedChip(); |
| } |
| return handled; |
| } |
| |
| // TODO: This algorithm will need a lot of tweaking after more people have used |
| // the chips ui. This attempts to be "forgiving" to fat finger touches by favoring |
| // what comes before the finger. |
| private int putOffsetInRange(int o) { |
| int offset = o; |
| Editable text = getText(); |
| int length = text.length(); |
| // Remove whitespace from end to find "real end" |
| int realLength = length; |
| for (int i = length - 1; i >= 0; i--) { |
| if (text.charAt(i) == ' ') { |
| realLength--; |
| } else { |
| break; |
| } |
| } |
| |
| // If the offset is beyond or at the end of the text, |
| // leave it alone. |
| if (offset >= realLength) { |
| return offset; |
| } |
| Editable editable = getText(); |
| while (offset >= 0 && findText(editable, offset) == -1 && findChip(offset) == null) { |
| // Keep walking backward! |
| offset--; |
| } |
| return offset; |
| } |
| |
| private int findText(Editable text, int offset) { |
| if (text.charAt(offset) != ' ') { |
| return offset; |
| } |
| return -1; |
| } |
| |
| private RecipientChip findChip(int offset) { |
| RecipientChip[] chips = getSpannable().getSpans(0, getText().length(), RecipientChip.class); |
| // Find the chip that contains this offset. |
| for (int i = 0; i < chips.length; i++) { |
| RecipientChip chip = chips[i]; |
| if (chip.matchesChip(offset)) { |
| return chip; |
| } |
| } |
| return null; |
| } |
| |
| private CharSequence createChip(RecipientEntry entry, boolean pressed) { |
| String displayText = entry.getDestination(); |
| displayText = (String) mTokenizer.terminateToken(displayText); |
| // Always leave a blank space at the end of a chip. |
| int textLength = displayText.length() - 1; |
| SpannableString chipText = new SpannableString(displayText); |
| int end = getSelectionEnd(); |
| int start = mTokenizer.findTokenStart(getText(), end); |
| try { |
| chipText.setSpan(constructChipSpan(entry, start, pressed), 0, textLength, |
| Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } catch (NullPointerException e) { |
| Log.e(TAG, e.getMessage(), e); |
| return null; |
| } |
| |
| return chipText; |
| } |
| |
| /** |
| * When an item in the suggestions list has been clicked, create a chip from the |
| * contact information of the selected item. |
| */ |
| @Override |
| public void onItemClick(AdapterView<?> parent, View view, int position, long id) { |
| submitItemAtPosition(position); |
| } |
| |
| private void submitItemAtPosition(int position) { |
| RecipientEntry entry = (RecipientEntry) getAdapter().getItem(position); |
| // If the display name and the address are the same, then make this |
| // a fake recipient that is editable. |
| if (TextUtils.equals(entry.getDisplayName(), entry.getDestination())) { |
| entry = RecipientEntry.constructFakeEntry(entry.getDestination()); |
| } |
| clearComposingText(); |
| |
| int end = getSelectionEnd(); |
| int start = mTokenizer.findTokenStart(getText(), end); |
| |
| Editable editable = getText(); |
| QwertyKeyListener.markAsReplaced(editable, start, end, ""); |
| editable.replace(start, end, createChip(entry, false)); |
| } |
| |
| /** Returns a collection of contact Id for each chip inside this View. */ |
| /* package */ Collection<Long> getContactIds() { |
| final Set<Long> result = new HashSet<Long>(); |
| RecipientChip[] chips = getRecipients(); |
| if (chips != null) { |
| for (RecipientChip chip : chips) { |
| result.add(chip.getContactId()); |
| } |
| } |
| return result; |
| } |
| |
| private RecipientChip[] getRecipients() { |
| return getSpannable().getSpans(0, getText().length(), RecipientChip.class); |
| } |
| |
| /** Returns a collection of data Id for each chip inside this View. May be null. */ |
| /* package */ Collection<Long> getDataIds() { |
| final Set<Long> result = new HashSet<Long>(); |
| RecipientChip [] chips = getRecipients(); |
| if (chips != null) { |
| for (RecipientChip chip : chips) { |
| result.add(chip.getDataId()); |
| } |
| } |
| return result; |
| } |
| |
| |
| @Override |
| public boolean onActionItemClicked(ActionMode mode, MenuItem item) { |
| return false; |
| } |
| |
| @Override |
| public void onDestroyActionMode(ActionMode mode) { |
| } |
| |
| @Override |
| public boolean onPrepareActionMode(ActionMode mode, Menu menu) { |
| return false; |
| } |
| |
| /** |
| * No chips are selectable. |
| */ |
| @Override |
| public boolean onCreateActionMode(ActionMode mode, Menu menu) { |
| return false; |
| } |
| |
| /** |
| * Create the more chip. The more chip is text that replaces any chips that |
| * do not fit in the pre-defined available space when the |
| * RecipientEditTextView loses focus. |
| */ |
| private ImageSpan createMoreChip() { |
| RecipientChip[] recipients = getRecipients(); |
| if (recipients == null || recipients.length <= CHIP_LIMIT) { |
| return null; |
| } |
| int numRecipients = recipients.length; |
| int overage = numRecipients - CHIP_LIMIT; |
| Editable text = getText(); |
| // TODO: get the correct size from visual design. |
| int width = (int) Math.floor(getWidth() * MORE_WIDTH_FACTOR); |
| int height = getLineHeight(); |
| Bitmap drawable = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(drawable); |
| String moreText = getResources().getString(mMoreString, overage); |
| canvas.drawText(moreText, 0, moreText.length(), 0, height - getLayout().getLineDescent(0), |
| getPaint()); |
| |
| Drawable result = new BitmapDrawable(getResources(), drawable); |
| result.setBounds(0, 0, width, height); |
| ImageSpan moreSpan = new ImageSpan(result); |
| Spannable spannable = getSpannable(); |
| // Remove the overage chips. |
| RecipientChip[] chips = spannable.getSpans(0, text.length(), RecipientChip.class); |
| if (chips == null || chips.length == 0) { |
| Log.w(TAG, |
| "We have recipients. Tt should not be possible to have zero RecipientChips."); |
| return null; |
| } |
| mRemovedSpans = new ArrayList<RecipientChip>(chips.length); |
| int totalReplaceStart = 0; |
| int totalReplaceEnd = 0; |
| for (int i = numRecipients - overage; i < chips.length; i++) { |
| mRemovedSpans.add(chips[i]); |
| if (i == numRecipients - overage) { |
| totalReplaceStart = chips[i].getChipStart(); |
| } |
| if (i == chips.length - 1) { |
| totalReplaceEnd = chips[i].getChipEnd(); |
| } |
| chips[i].setPreviousChipStart(chips[i].getChipStart()); |
| chips[i].setPreviousChipEnd(chips[i].getChipEnd()); |
| spannable.removeSpan(chips[i]); |
| } |
| SpannableString chipText = new SpannableString(text.subSequence(totalReplaceStart, |
| totalReplaceEnd)); |
| chipText.setSpan(moreSpan, 0, chipText.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| text.replace(totalReplaceStart, totalReplaceEnd, chipText); |
| return moreSpan; |
| } |
| |
| /** |
| * Replace the more chip, if it exists, with all of the recipient chips it had |
| * replaced when the RecipientEditTextView gains focus. |
| */ |
| private void removeMoreChip() { |
| if (mMoreChip != null) { |
| Spannable span = getSpannable(); |
| span.removeSpan(mMoreChip); |
| mMoreChip = null; |
| // Re-add the spans that were removed. |
| if (mRemovedSpans != null && mRemovedSpans.size() > 0) { |
| // Recreate each removed span. |
| Editable editable = getText(); |
| SpannableString associatedText; |
| for (RecipientChip chip : mRemovedSpans) { |
| int chipStart = chip.getPreviousChipStart(); |
| int chipEnd = Math.min(editable.length(), chip.getPreviousChipEnd()); |
| if (Log.isLoggable(TAG, Log.DEBUG) && chipEnd != chip.getPreviousChipEnd()) { |
| Log.d(TAG, |
| "Unexpectedly, the chip ended after the end of the editable text. " |
| + "Chip End " + chip.getPreviousChipEnd() |
| + "Editable length " + editable.length()); |
| } |
| associatedText = new SpannableString(editable.subSequence(chipStart, chipEnd)); |
| associatedText.setSpan(chip, 0, associatedText.length(), |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| editable.replace(chipStart, chipEnd, associatedText); |
| } |
| mRemovedSpans.clear(); |
| } |
| } |
| } |
| |
| /** |
| * RecipientChip defines an ImageSpan that contains information relevant to |
| * a particular recipient. |
| */ |
| public class RecipientChip extends ImageSpan implements OnItemClickListener { |
| private final CharSequence mDisplay; |
| |
| private final CharSequence mValue; |
| |
| private View mAnchorView; |
| |
| private final long mContactId; |
| |
| private final long mDataId; |
| |
| private RecipientEntry mEntry; |
| |
| private boolean mSelected = false; |
| |
| private RecipientAlternatesAdapter mAlternatesAdapter; |
| |
| private int mStart = -1; |
| |
| private int mEnd = -1; |
| |
| private ListPopupWindow mAlternatesPopup; |
| |
| public RecipientChip(Drawable drawable, RecipientEntry entry, int offset) { |
| super(drawable); |
| mDisplay = entry.getDisplayName(); |
| mValue = entry.getDestination(); |
| mContactId = entry.getContactId(); |
| mDataId = entry.getDataId(); |
| mEntry = entry; |
| mAnchorView = new View(getContext()); |
| mAnchorView.setVisibility(View.GONE); |
| } |
| |
| /** |
| * Store the offset in the spannable where this RecipientChip |
| * is currently being displayed. |
| */ |
| public void setPreviousChipStart(int start) { |
| mStart = start; |
| } |
| |
| /** |
| * Get the offset in the spannable where this RecipientChip |
| * was currently being displayed. Use this to determine where |
| * to place a RecipientChip that has been hidden when the |
| * RecipientEditTextView loses focus. |
| */ |
| public int getPreviousChipStart() { |
| return mStart; |
| } |
| |
| /** |
| * Store the end offset in the spannable where this RecipientChip |
| * is currently being displayed. |
| */ |
| public void setPreviousChipEnd(int end) { |
| mEnd = end; |
| } |
| |
| /** |
| * Get the end offset in the spannable where this RecipientChip |
| * was currently being displayed. Use this to determine where |
| * to place a RecipientChip that has been hidden when the |
| * RecipientEditTextView loses focus. |
| */ |
| public int getPreviousChipEnd() { |
| return mEnd; |
| } |
| |
| /** |
| * Remove selection from this chip. Unselecting a RecipientChip will render |
| * the chip without a delete icon and with an unfocused background. This |
| * is called when the RecipientChip no longer has focus. |
| */ |
| public void unselectChip() { |
| int start = getChipStart(); |
| int end = getChipEnd(); |
| Editable editable = getText(); |
| if (start == -1 || end == -1) { |
| Log.e(TAG, "The chip being unselected no longer exists but should."); |
| } else { |
| getSpannable().removeSpan(this); |
| QwertyKeyListener.markAsReplaced(editable, start, end, ""); |
| editable.replace(start, end, createChip(mEntry, false)); |
| } |
| mSelectedChip = null; |
| clearSelectedChip(); |
| setCursorVisible(true); |
| setSelection(editable.length()); |
| if (mAlternatesPopup != null && mAlternatesPopup.isShowing()) { |
| mAlternatesPopup.dismiss(); |
| } |
| } |
| |
| /** |
| * Show this chip as selected. If the RecipientChip is just an email address, |
| * selecting the chip will take the contents of the chip and place it at |
| * the end of the RecipientEditTextView for inline editing. If the |
| * RecipientChip is a complete contact, then selecting the chip |
| * will change the background color of the chip, show the delete icon, |
| * and a popup window with the address in use highlighted and any other |
| * alternate addresses for the contact. |
| * @return A RecipientChip in the selected state or null if the chip |
| * just contained an email address. |
| */ |
| public RecipientChip selectChip() { |
| if (mEntry.getContactId() != INVALID_CONTACT) { |
| int start = getChipStart(); |
| int end = getChipEnd(); |
| getSpannable().removeSpan(this); |
| RecipientChip newChip; |
| CharSequence displayText = mTokenizer.terminateToken(mEntry.getDestination()); |
| // Always leave a blank space at the end of a chip. |
| int textLength = displayText.length() - 1; |
| SpannableString chipText = new SpannableString(displayText); |
| try { |
| newChip = constructChipSpan(mEntry, start, true); |
| chipText.setSpan(newChip, 0, textLength, |
| Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } catch (NullPointerException e) { |
| Log.e(TAG, e.getMessage(), e); |
| return null; |
| } |
| Editable editable = getText(); |
| QwertyKeyListener.markAsReplaced(editable, start, end, ""); |
| if (start == -1 || end == -1) { |
| Log.d(TAG, "The chip being selected no longer exists but should."); |
| } else { |
| editable.replace(start, end, chipText); |
| } |
| setCursorVisible(false); |
| newChip.setSelected(true); |
| newChip.showAlternates(); |
| setCursorVisible(false); |
| return newChip; |
| } else { |
| CharSequence text = getValue(); |
| Editable editable = getText(); |
| removeChip(); |
| editable.append(text); |
| setCursorVisible(true); |
| setSelection(editable.length()); |
| return null; |
| } |
| } |
| |
| /** |
| * Handle key events for a chip. When the keyCode equals |
| * KeyEvent.KEYCODE_DEL, this deletes the currently selected chip. |
| */ |
| public void onKeyDown(int keyCode, KeyEvent event) { |
| if (keyCode == KeyEvent.KEYCODE_DEL) { |
| if (mAlternatesPopup != null && mAlternatesPopup.isShowing()) { |
| mAlternatesPopup.dismiss(); |
| } |
| removeChip(); |
| } |
| } |
| |
| /** |
| * Remove this chip and any text associated with it from the RecipientEditTextView. |
| */ |
| private void removeChip() { |
| Spannable spannable = getSpannable(); |
| int spanStart = spannable.getSpanStart(this); |
| int spanEnd = spannable.getSpanEnd(this); |
| Editable text = getText(); |
| int toDelete = spanEnd; |
| boolean wasSelected = this == mSelectedChip; |
| // Clear that there is a selected chip before updating any text. |
| if (wasSelected) { |
| mSelectedChip = null; |
| } |
| // Always remove trailing spaces when removing a chip. |
| while (toDelete >= 0 && toDelete < text.length() - 1 && text.charAt(toDelete) == ' ') { |
| toDelete++; |
| } |
| spannable.removeSpan(this); |
| text.delete(spanStart, toDelete); |
| if (wasSelected) { |
| clearSelectedChip(); |
| } |
| } |
| |
| /** |
| * Get the start offset of this chip in the view. |
| */ |
| public int getChipStart() { |
| return getSpannable().getSpanStart(this); |
| } |
| |
| /** |
| * Get the end offset of this chip in the view. |
| */ |
| public int getChipEnd() { |
| return getSpannable().getSpanEnd(this); |
| } |
| |
| /** |
| * Replace this currently selected chip with a new chip |
| * that uses the contact data provided. |
| */ |
| public void replaceChip(RecipientEntry entry) { |
| boolean wasSelected = this == mSelectedChip; |
| if (wasSelected) { |
| mSelectedChip = null; |
| } |
| int start = getSpannable().getSpanStart(this); |
| int end = getSpannable().getSpanEnd(this); |
| getSpannable().removeSpan(this); |
| Editable editable = getText(); |
| CharSequence chipText = createChip(entry, false); |
| if (start == -1 || end == -1) { |
| Log.e(TAG, "The chip to replace does not exist but should."); |
| editable.insert(0, chipText); |
| } else { |
| editable.replace(start, end, chipText); |
| } |
| setCursorVisible(true); |
| if (wasSelected) { |
| clearSelectedChip(); |
| } |
| } |
| |
| /** |
| * Show all addresses associated with a contact. |
| */ |
| private void showAlternates() { |
| mAlternatesPopup = new ListPopupWindow(getContext()); |
| |
| if (!mAlternatesPopup.isShowing()) { |
| int line = getLayout().getLineForOffset(getChipStart()); |
| int[] xy = new int[2]; |
| getLocationOnScreen(xy); |
| int bottom = calculateLineBottom(xy[1], line, (int) mChipHeight); |
| mAnchorView.setBottom(bottom); |
| mAnchorView.setTop(bottom); |
| mAlternatesAdapter = new RecipientAlternatesAdapter(getContext(), |
| mEntry.getContactId(), mEntry.getDataId(), mAlternatesLayout); |
| // Align the alternates popup with the left side of the View, regardless |
| // of the position of the chip tapped. |
| mAlternatesPopup.setAnchorView(mAnchorView); |
| mAlternatesPopup.setAdapter(mAlternatesAdapter); |
| mAlternatesPopup.setWidth(getWidth()); |
| mAlternatesPopup.setOnItemClickListener(this); |
| mAlternatesPopup.show(); |
| ListView listView = mAlternatesPopup.getListView(); |
| listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); |
| listView.setItemChecked(mAlternatesAdapter.getCheckedItemPosition(), true); |
| } |
| } |
| |
| private void setSelected(boolean selected) { |
| mSelected = selected; |
| } |
| |
| /** |
| * Get the text displayed in the chip. |
| */ |
| public CharSequence getDisplay() { |
| return mDisplay; |
| } |
| |
| /** |
| * Get the text value this chip represents. |
| */ |
| public CharSequence getValue() { |
| return mValue; |
| } |
| |
| /** |
| * See if a touch event was inside the delete target of |
| * a selected chip. It is in the delete target if: |
| * 1) the x and y points of the event are within the |
| * delete assset. |
| * 2) the point tapped would have caused a cursor to appear |
| * right after the selected chip. |
| */ |
| private boolean isInDelete(int offset, float x, float y) { |
| // Figure out the bounds of this chip and whether or not |
| // the user clicked in the X portion. |
| return mSelected && offset == getChipEnd(); |
| } |
| |
| /** |
| * Return whether this chip contains the position passed in. |
| */ |
| public boolean matchesChip(int offset) { |
| int start = getChipStart(); |
| int end = getChipEnd(); |
| return (offset >= start && offset <= end); |
| } |
| |
| /** |
| * Handle click events for a chip. When a selected chip receives a click |
| * event, see if that event was in the delete icon. If so, delete it. |
| * Otherwise, unselect the chip. |
| */ |
| public void onClick(View widget, int offset, float x, float y) { |
| if (mSelected) { |
| if (isInDelete(offset, x, y)) { |
| removeChip(); |
| } else { |
| clearSelectedChip(); |
| } |
| } |
| } |
| |
| @Override |
| public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, |
| int y, int bottom, Paint paint) { |
| // Shift the bounds of this span to where it is actually drawn on the screeen. |
| super.draw(canvas, text, start, end, x, top, y, bottom, paint); |
| } |
| |
| /** |
| * Handle clicks to alternate addresses for a selected chip. If the user |
| * selects an alternate, the chip is replaced with a new contact with the |
| * new contact address information. |
| */ |
| @Override |
| public void onItemClick(AdapterView<?> adapterView, View view, int position, long rowId) { |
| Message delayed = Message.obtain(mHandler, DISMISS); |
| delayed.obj = mAlternatesPopup; |
| mHandler.sendMessageDelayed(delayed, DISMISS_DELAY); |
| clearComposingText(); |
| replaceChip(mAlternatesAdapter.getRecipientEntry(position)); |
| } |
| |
| /** |
| * Get the id of the contact associated with this chip. |
| */ |
| public long getContactId() { |
| return mContactId; |
| } |
| |
| /** |
| * Get the id of the data associated with this chip. |
| */ |
| public long getDataId() { |
| return mDataId; |
| } |
| } |
| } |