Example usage for android.view KeyEvent KEYCODE_DEL

List of usage examples for android.view KeyEvent KEYCODE_DEL

Introduction

In this page you can find the example usage for android.view KeyEvent KEYCODE_DEL.

Prototype

int KEYCODE_DEL

To view the source code for android.view KeyEvent KEYCODE_DEL.

Click Source Link

Document

Key code constant: Backspace key.

Usage

From source file:com.yek.keyboard.anysoftkeyboard.AnySoftKeyboard.java

@Override
public boolean onKeyDown(final int keyEventKeyCode, @NonNull KeyEvent event) {
    InputConnection ic = getCurrentInputConnection();
    if (handleSelectionExpending(keyEventKeyCode, ic, mGlobalSelectionStartPosition, mGlobalCursorPosition))
        return true;
    final boolean shouldTranslateSpecialKeys = isInputViewShown();

    //greater than zero means it is a physical keyboard.
    //we also want to hide the view if it's a glyph (for example, not physical volume-up key)
    if (event.getDeviceId() > 0 && event.isPrintingKey())
        onPhysicalKeyboardKeyPressed();/*from  www  .  j  a va 2  s  .  co  m*/

    mHardKeyboardAction.initializeAction(event, mMetaState);

    switch (keyEventKeyCode) {
    /****
     * SPECIAL translated HW keys If you add new keys here, do not forget
     * to add to the
     */
    case KeyEvent.KEYCODE_CAMERA:
        if (shouldTranslateSpecialKeys && mAskPrefs.useCameraKeyForBackspaceBackword()) {
            handleBackWord(getCurrentInputConnection());
            return true;
        }
        // DO NOT DELAY CAMERA KEY with unneeded checks in default mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_FOCUS:
        if (shouldTranslateSpecialKeys && mAskPrefs.useCameraKeyForBackspaceBackword()) {
            handleDeleteLastCharacter(false);
            return true;
        }
        // DO NOT DELAY FOCUS KEY with unneeded checks in default mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_VOLUME_UP:
        if (shouldTranslateSpecialKeys && mAskPrefs.useVolumeKeyForLeftRight()) {
            sendDownUpKeyEvents(KeyEvent.KEYCODE_DPAD_LEFT);
            return true;
        }
        // DO NOT DELAY VOLUME UP KEY with unneeded checks in default
        // mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_VOLUME_DOWN:
        if (shouldTranslateSpecialKeys && mAskPrefs.useVolumeKeyForLeftRight()) {
            sendDownUpKeyEvents(KeyEvent.KEYCODE_DPAD_RIGHT);
            return true;
        }
        // DO NOT DELAY VOLUME DOWN KEY with unneeded checks in default
        // mark
        return super.onKeyDown(keyEventKeyCode, event);
    /****
     * END of SPECIAL translated HW keys code section
     */
    case KeyEvent.KEYCODE_BACK:
        if (event.getRepeatCount() == 0 && getInputView() != null) {
            if (getInputView().handleBack()) {
                // consuming the meta keys
                if (ic != null) {
                    // translated, so we also take care of the metakeys
                    ic.clearMetaKeyStates(Integer.MAX_VALUE);
                }
                mMetaState = 0;
                return true;
            }
        }
        break;
    case 0x000000cc:// API 14: KeyEvent.KEYCODE_LANGUAGE_SWITCH
        switchToNextPhysicalKeyboard(ic);
        return true;
    case KeyEvent.KEYCODE_SHIFT_LEFT:
    case KeyEvent.KEYCODE_SHIFT_RIGHT:
        if (event.isAltPressed() && Workarounds.isAltSpaceLangSwitchNotPossible()) {
            switchToNextPhysicalKeyboard(ic);
            return true;
        }
        // NOTE: letting it fall-through to the other meta-keys
    case KeyEvent.KEYCODE_ALT_LEFT:
    case KeyEvent.KEYCODE_ALT_RIGHT:
    case KeyEvent.KEYCODE_SYM:
        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown before handle"));
        mMetaState = MyMetaKeyKeyListener.handleKeyDown(mMetaState, keyEventKeyCode, event);
        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after handle"));
        break;
    case KeyEvent.KEYCODE_SPACE:
        if ((event.isAltPressed() && !Workarounds.isAltSpaceLangSwitchNotPossible())
                || event.isShiftPressed()) {
            switchToNextPhysicalKeyboard(ic);
            return true;
        }
        // NOTE:
        // letting it fall through to the "default"
    default:

        // Fix issue 185, check if we should process key repeat
        if (!mAskPrefs.getUseRepeatingKeys() && event.getRepeatCount() > 0)
            return true;

        AnyKeyboard.HardKeyboardTranslator keyTranslator = (AnyKeyboard.HardKeyboardTranslator) getCurrentAlphabetKeyboard();
        if (getKeyboardSwitcher().isCurrentKeyboardPhysical() && keyTranslator != null) {
            // sometimes, the physical keyboard will delete input, and then add some.
            // we'll try to make it nice.
            if (ic != null)
                ic.beginBatchEdit();
            try {
                // issue 393, backword on the hw keyboard!
                if (mAskPrefs.useBackword() && keyEventKeyCode == KeyEvent.KEYCODE_DEL
                        && event.isShiftPressed()) {
                    handleBackWord(ic);
                    return true;
                } else {
                    // http://article.gmane.org/gmane.comp.handhelds.openmoko.android-freerunner/629
                    keyTranslator.translatePhysicalCharacter(mHardKeyboardAction, this);

                    if (mHardKeyboardAction.getKeyCodeWasChanged()) {
                        final int translatedChar = mHardKeyboardAction.getKeyCode();
                        // typing my own.
                        onKey(translatedChar, null, -1, new int[] { translatedChar }, true/*faking from UI*/);
                        // my handling we are at a regular key press, so we'll update
                        // our meta-state member
                        mMetaState = MyMetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
                        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after adjust - translated"));
                        return true;
                    }
                }
            } finally {
                if (ic != null)
                    ic.endBatchEdit();
            }
        }
        if (event.isPrintingKey()) {
            // we are at a regular key press, so we'll update our
            // meta-state
            // member
            mMetaState = MyMetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
            Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after adjust"));
        }
    }
    return super.onKeyDown(keyEventKeyCode, event);
}

From source file:research.sg.edu.edapp.kb.KbSoftKeyboard.java

private void handleBackspace() {
    final int length = mComposing.length();
    if (length > 1) {
        mComposing.delete(length - 1, length);
        getCurrentInputConnection().setComposingText(mComposing, 1);
        updateCandidates();//from www. j av a 2 s  .  co m
    } else if (length > 0) {
        mComposing.setLength(0);
        getCurrentInputConnection().commitText("", 0);
        updateCandidates();
    } else {
        keyDownUp(KeyEvent.KEYCODE_DEL);
    }
    updateShiftKeyState(getCurrentInputEditorInfo());
}

From source file:com.anysoftkeyboard.AnySoftKeyboard.java

@Override
public boolean onKeyDown(final int keyEventKeyCode, @NonNull KeyEvent event) {
    InputConnection ic = getCurrentInputConnection();
    if (handleSelectionExpending(keyEventKeyCode, ic, mGlobalSelectionStartPosition, mGlobalCursorPosition))
        return true;
    final boolean shouldTranslateSpecialKeys = isInputViewShown();

    //greater than zero means it is a physical keyboard.
    //we also want to hide the view if it's a glyph (for example, not physical volume-up key)
    if (event.getDeviceId() > 0 && event.isPrintingKey())
        onPhysicalKeyboardKeyPressed();//from  w w  w. j av a 2s  .co  m

    mHardKeyboardAction.initializeAction(event, mMetaState);

    switch (keyEventKeyCode) {
    /****
     * SPECIAL translated HW keys If you add new keys here, do not forget
     * to add to the
     */
    case KeyEvent.KEYCODE_CAMERA:
        if (shouldTranslateSpecialKeys && mAskPrefs.useCameraKeyForBackspaceBackword()) {
            handleBackWord(getCurrentInputConnection());
            return true;
        }
        // DO NOT DELAY CAMERA KEY with unneeded checks in default mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_FOCUS:
        if (shouldTranslateSpecialKeys && mAskPrefs.useCameraKeyForBackspaceBackword()) {
            handleDeleteLastCharacter(false);
            return true;
        }
        // DO NOT DELAY FOCUS KEY with unneeded checks in default mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_VOLUME_UP:
        if (shouldTranslateSpecialKeys && mAskPrefs.useVolumeKeyForLeftRight()) {
            sendDownUpKeyEvents(KeyEvent.KEYCODE_DPAD_LEFT);
            return true;
        }
        // DO NOT DELAY VOLUME UP KEY with unneeded checks in default
        // mark
        return super.onKeyDown(keyEventKeyCode, event);
    case KeyEvent.KEYCODE_VOLUME_DOWN:
        if (shouldTranslateSpecialKeys && mAskPrefs.useVolumeKeyForLeftRight()) {
            sendDownUpKeyEvents(KeyEvent.KEYCODE_DPAD_RIGHT);
            return true;
        }
        // DO NOT DELAY VOLUME DOWN KEY with unneeded checks in default
        // mark
        return super.onKeyDown(keyEventKeyCode, event);
    /****
     * END of SPECIAL translated HW keys code section
     */
    case KeyEvent.KEYCODE_BACK:
        if (event.getRepeatCount() == 0 && getInputView() != null) {
            if (getInputView().handleBack()) {
                // consuming the meta keys
                if (ic != null) {
                    // translated, so we also take care of the metakeys
                    ic.clearMetaKeyStates(Integer.MAX_VALUE);
                }
                mMetaState = 0;
                return true;
            }
        }
        break;
    case 0x000000cc:// API 14: KeyEvent.KEYCODE_LANGUAGE_SWITCH
        switchToNextPhysicalKeyboard(ic);
        return true;
    case KeyEvent.KEYCODE_SHIFT_LEFT:
    case KeyEvent.KEYCODE_SHIFT_RIGHT:
        if (event.isAltPressed() && Workarounds.isAltSpaceLangSwitchNotPossible()) {
            switchToNextPhysicalKeyboard(ic);
            return true;
        }
        // NOTE: letting it fall-through to the other meta-keys
    case KeyEvent.KEYCODE_ALT_LEFT:
    case KeyEvent.KEYCODE_ALT_RIGHT:
    case KeyEvent.KEYCODE_SYM:
        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown before handle"));
        mMetaState = MyMetaKeyKeyListener.handleKeyDown(mMetaState, keyEventKeyCode, event);
        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after handle"));
        break;
    case KeyEvent.KEYCODE_SPACE:
        if ((event.isAltPressed() && !Workarounds.isAltSpaceLangSwitchNotPossible())
                || event.isShiftPressed()) {
            switchToNextPhysicalKeyboard(ic);
            return true;
        }
        // NOTE:
        // letting it fall through to the "default"
    default:

        // Fix issue 185, check if we should process key repeat
        if (!mAskPrefs.getUseRepeatingKeys() && event.getRepeatCount() > 0)
            return true;

        HardKeyboardTranslator keyTranslator = (HardKeyboardTranslator) getCurrentAlphabetKeyboard();
        if (getKeyboardSwitcher().isCurrentKeyboardPhysical() && keyTranslator != null) {
            // sometimes, the physical keyboard will delete input, and then add some.
            // we'll try to make it nice.
            if (ic != null)
                ic.beginBatchEdit();
            try {
                // issue 393, backword on the hw keyboard!
                if (mAskPrefs.useBackword() && keyEventKeyCode == KeyEvent.KEYCODE_DEL
                        && event.isShiftPressed()) {
                    handleBackWord(ic);
                    return true;
                } else {
                    // http://article.gmane.org/gmane.comp.handhelds.openmoko.android-freerunner/629
                    keyTranslator.translatePhysicalCharacter(mHardKeyboardAction, this);

                    if (mHardKeyboardAction.getKeyCodeWasChanged()) {
                        final int translatedChar = mHardKeyboardAction.getKeyCode();
                        // typing my own.
                        onKey(translatedChar, null, -1, new int[] { translatedChar }, true/*faking from UI*/);
                        // my handling we are at a regular key press, so we'll update
                        // our meta-state member
                        mMetaState = MyMetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
                        Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after adjust - translated"));
                        return true;
                    }
                }
            } finally {
                if (ic != null)
                    ic.endBatchEdit();
            }
        }
        if (event.isPrintingKey()) {
            // we are at a regular key press, so we'll update our
            // meta-state
            // member
            mMetaState = MyMetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
            Logger.d(TAG + "-meta-key", getMetaKeysStates("onKeyDown after adjust"));
        }
    }
    return super.onKeyDown(keyEventKeyCode, event);
}

From source file:com.customdatepicker.time.TimePickerDialog.java

/**
 * For keyboard mode, processes key events.
 * @param keyCode the pressed key./*  www . ja va2 s.com*/
 * @return true if the key was successfully processed, false otherwise.
 */
private boolean processKeyUp(int keyCode) {
    if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
        if (isCancelable())
            dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_TAB) {
        if (mInKbMode) {
            if (isTypedTimeFullyLegal()) {
                finishKbMode(true);
            }
            return true;
        }
    } else if (keyCode == KeyEvent.KEYCODE_ENTER) {
        if (mInKbMode) {
            if (!isTypedTimeFullyLegal()) {
                return true;
            }
            finishKbMode(false);
        }
        if (mCallback != null) {
            mCallback.onTimeSet(this, mTimePicker.getHours(), mTimePicker.getMinutes(),
                    mTimePicker.getSeconds());
        }
        dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_DEL) {
        if (mInKbMode) {
            if (!mTypedTimes.isEmpty()) {
                int deleted = deleteLastTypedKey();
                String deletedKeyStr;
                if (deleted == getAmOrPmKeyCode(AM)) {
                    deletedKeyStr = mAmText;
                } else if (deleted == getAmOrPmKeyCode(PM)) {
                    deletedKeyStr = mPmText;
                } else {
                    deletedKeyStr = String.format("%d", getValFromKeyCode(deleted));
                }
                Utils.tryAccessibilityAnnounce(mTimePicker, String.format(mDeletedKeyFormat, deletedKeyStr));
                updateDisplay(true);
            }
        }
    } else if (keyCode == KeyEvent.KEYCODE_0 || keyCode == KeyEvent.KEYCODE_1 || keyCode == KeyEvent.KEYCODE_2
            || keyCode == KeyEvent.KEYCODE_3 || keyCode == KeyEvent.KEYCODE_4 || keyCode == KeyEvent.KEYCODE_5
            || keyCode == KeyEvent.KEYCODE_6 || keyCode == KeyEvent.KEYCODE_7 || keyCode == KeyEvent.KEYCODE_8
            || keyCode == KeyEvent.KEYCODE_9
            || (!mIs24HourMode && (keyCode == getAmOrPmKeyCode(AM) || keyCode == getAmOrPmKeyCode(PM)))) {
        if (!mInKbMode) {
            if (mTimePicker == null) {
                // Something's wrong, because time picker should definitely not be null.
                Log.e(TAG, "Unable to initiate keyboard mode, TimePicker was null.");
                return true;
            }
            mTypedTimes.clear();
            tryStartingKbMode(keyCode);
            return true;
        }
        // We're already in keyboard mode.
        if (addKeyIfLegal(keyCode)) {
            updateDisplay(false);
        }
        return true;
    }
    return false;
}

From source file:com.android.ex.chips.RecipientEditTextView.java

/**
 * If there is a selected chip, delegate the key events to the selected chip.
 */// ww  w  .  j  a  v a2s .  c o m
@Override
public boolean onKeyDown(final int keyCode, final KeyEvent event) {
    if (mSelectedChip != null && keyCode == KeyEvent.KEYCODE_DEL) {
        /*if(mAlternatesPopup!=null&&mAlternatesPopup.isShowing())
          mAlternatesPopup.dismiss();*/
        removeChip(mSelectedChip, true);
    }
    switch (keyCode) {
    case KeyEvent.KEYCODE_ENTER:
    case KeyEvent.KEYCODE_DPAD_CENTER:
        if (event.hasNoModifiers()) {
            if (commitDefault())
                return true;
            if (mSelectedChip != null) {
                clearSelectedChip();
                return true;
            } else if (focusNext())
                return true;
        }
        break;
    }
    return super.onKeyDown(keyCode, event);
}

From source file:com.fishstix.dosboxfree.DBGLSurfaceView.java

@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
    return new BaseInputConnection(this, false) {
        @Override/*from   w  ww.j  ava 2  s .c  o m*/
        public boolean sendKeyEvent(KeyEvent event) {
            return super.sendKeyEvent(event);
        }

        @Override
        public boolean deleteSurroundingText(int beforeLength, int afterLength) {
            // magic: in latest Android, deleteSurroundingText(1, 0) will be called for backspace
            if (beforeLength == 1 && afterLength == 0) {
                // backspace
                super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
                return super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL));
            }

            return super.deleteSurroundingText(beforeLength, afterLength);
        }
    };
}

From source file:nu.yona.timepicker.time.TimePickerDialog.java

/**
 * For keyboard mode, processes key events.
 *
 * @param keyCode the pressed key./*from ww  w .  j  a v  a  2 s  . c  o  m*/
 * @return true if the key was successfully processed, false otherwise.
 */
private boolean processKeyUp(int keyCode) {
    if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
        if (isCancelable())
            dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_TAB) {
        if (mInKbMode) {
            if (isTypedTimeFullyLegal()) {
                finishKbMode(true);
            }
            return true;
        }
    } else if (keyCode == KeyEvent.KEYCODE_ENTER) {
        if (mInKbMode) {
            if (!isTypedTimeFullyLegal()) {
                return true;
            }
            finishKbMode(false);
        }
        if (mCallback != null) {
            mCallback.onTimeSet(mTimePicker, mTimePicker.getHours(), mTimePicker.getMinutes(),
                    mTimePicker.getSeconds());
        }
        dismiss();
        return true;
    } else if (keyCode == KeyEvent.KEYCODE_DEL) {
        if (mInKbMode) {
            if (!mTypedTimes.isEmpty()) {
                int deleted = deleteLastTypedKey();
                String deletedKeyStr;
                if (deleted == getAmOrPmKeyCode(AM)) {
                    deletedKeyStr = mAmText;

                } else if (deleted == getAmOrPmKeyCode(PM)) {
                    deletedKeyStr = mPmText;
                } else {
                    deletedKeyStr = String.format("%d", getValFromKeyCode(deleted));
                }
                Utils.tryAccessibilityAnnounce(mTimePicker, String.format(mDeletedKeyFormat, deletedKeyStr));
                updateDisplay(true);
            }
        }
    } else if (keyCode == KeyEvent.KEYCODE_0 || keyCode == KeyEvent.KEYCODE_1 || keyCode == KeyEvent.KEYCODE_2
            || keyCode == KeyEvent.KEYCODE_3 || keyCode == KeyEvent.KEYCODE_4 || keyCode == KeyEvent.KEYCODE_5
            || keyCode == KeyEvent.KEYCODE_6 || keyCode == KeyEvent.KEYCODE_7 || keyCode == KeyEvent.KEYCODE_8
            || keyCode == KeyEvent.KEYCODE_9
            || (!mIs24HourMode && (keyCode == getAmOrPmKeyCode(AM) || keyCode == getAmOrPmKeyCode(PM)))) {
        if (!mInKbMode) {
            if (mTimePicker == null) {
                // Something's wrong, because time picker should definitely not be null.
                Log.e(TAG, "Unable to initiate keyboard mode, TimePicker was null.");
                return true;
            }
            mTypedTimes.clear();
            tryStartingKbMode(keyCode);
            return true;
        }
        // We're already in keyboard mode.
        if (addKeyIfLegal(keyCode)) {
            updateDisplay(false);
        }
        return true;
    }
    return false;
}

From source file:com.strathclyde.highlightingkeyboard.SoftKeyboardService.java

/**
 * Handle a press of the backspace key/*from   ww  w.  j  ava  2s  . c  om*/
 */
private void handleBackspace() {

    coreEngine.removeString(true, 1);

    final int length = mComposing.length();
    if (length > 1) {
        mComposing.delete(length - 1, length);
        ic.setComposingText(mComposing, 1);
        updateCandidates();
    } else if (length > 0) {
        mComposing.setLength(0);
        ic.commitText("", 0);
        updateCandidates();
    } else {
        keyDownUp(KeyEvent.KEYCODE_DEL);
    }
    updateShiftKeyState(getCurrentInputEditorInfo());
}

From source file:com.anysoftkeyboard.AnySoftKeyboard.java

private void handleDeleteLastCharacter(boolean forMultiTap) {
    InputConnection ic = getCurrentInputConnection();

    boolean deleteChar = false;
    if (TextEntryState.isPredicting()) {
        final boolean wordManipulation = mWord.length() > 0 && mWord.cursorPosition() > 0;
        if (wordManipulation) {
            mWord.deleteLast();//from  ww w  .  j a v a  2 s .  co m
            final int cursorPosition;
            if (mWord.cursorPosition() != mWord.length())
                cursorPosition = getCursorPosition(ic);
            else
                cursorPosition = -1;

            if (cursorPosition >= 0)
                ic.beginBatchEdit();

            ic.setComposingText(mWord.getTypedWord(), 1);
            if (mWord.length() == 0) {
                TextEntryState.newSession(mPredictionOn);
            } else if (cursorPosition >= 0) {
                ic.setSelection(cursorPosition - 1, cursorPosition - 1);
            }

            if (cursorPosition >= 0)
                ic.endBatchEdit();

            postUpdateSuggestions();
        } else {
            ic.deleteSurroundingText(1, 0);
        }
    } else {
        deleteChar = true;
    }

    TextEntryState.backspace();
    if (TextEntryState.getState() == TextEntryState.State.UNDO_COMMIT) {
        revertLastWord();
    } else if (deleteChar) {
        //just making sure that
        if (mCandidateView != null)
            mCandidateView.dismissAddToDictionaryHint();

        if (!forMultiTap) {
            sendDownUpKeyEvents(KeyEvent.KEYCODE_DEL);
        } else {
            // this code tries to delete the text in a different way,
            // because of multi-tap stuff
            // using "deleteSurroundingText" will actually get the input
            // updated faster!
            // but will not handle "delete all selected text" feature,
            // hence the "if (!forMultiTap)" above
            final CharSequence beforeText = ic == null ? null : ic.getTextBeforeCursor(1, 0);
            final int textLengthBeforeDelete = (TextUtils.isEmpty(beforeText)) ? 0 : beforeText.length();
            if (textLengthBeforeDelete > 0)
                ic.deleteSurroundingText(1, 0);
            else
                sendDownUpKeyEvents(KeyEvent.KEYCODE_DEL);
        }
    }
}

From source file:com.sonetel.ui.dialpad.DialerFragment.java

@Override
public void deleteChar() {
    keyPressed(KeyEvent.KEYCODE_DEL);
}