diff options
Diffstat (limited to 'mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditable.java')
| -rw-r--r-- | mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditable.java | 1589 |
1 files changed, 1589 insertions, 0 deletions
diff --git a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditable.java b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditable.java new file mode 100644 index 000000000..695cff443 --- /dev/null +++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditable.java @@ -0,0 +1,1589 @@ +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +package org.mozilla.gecko; + +import java.lang.reflect.Array; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationHandler; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.lang.reflect.Proxy; +import java.util.concurrent.ConcurrentLinkedQueue; + +import org.json.JSONObject; +import org.mozilla.gecko.AppConstants.Versions; +import org.mozilla.gecko.annotation.WrapForJNI; +import org.mozilla.gecko.gfx.LayerView; +import org.mozilla.gecko.mozglue.JNIObject; +import org.mozilla.gecko.util.ThreadUtils; +import org.mozilla.gecko.util.ThreadUtils.AssertBehavior; + +import android.graphics.RectF; +import android.os.Handler; +import android.os.Looper; +import android.text.Editable; +import android.text.InputFilter; +import android.text.NoCopySpan; +import android.text.Selection; +import android.text.Spannable; +import android.text.SpannableString; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.TextPaint; +import android.text.TextUtils; +import android.text.style.CharacterStyle; +import android.util.Log; +import android.view.KeyCharacterMap; +import android.view.KeyEvent; + +/* + GeckoEditable implements only some functions of Editable + The field mText contains the actual underlying + SpannableStringBuilder/Editable that contains our text. +*/ +final class GeckoEditable extends JNIObject + implements InvocationHandler, Editable, GeckoEditableClient { + + private static final boolean DEBUG = false; + private static final String LOGTAG = "GeckoEditable"; + + // Filters to implement Editable's filtering functionality + private InputFilter[] mFilters; + + private final AsyncText mText; + private final Editable mProxy; + private final ConcurrentLinkedQueue<Action> mActions; + private KeyCharacterMap mKeyMap; + + // mIcRunHandler is the Handler that currently runs Gecko-to-IC Runnables + // mIcPostHandler is the Handler to post Gecko-to-IC Runnables to + // The two can be different when switching from one handler to another + private Handler mIcRunHandler; + private Handler mIcPostHandler; + + /* package */ GeckoEditableListener mListener; + /* package */ GeckoView mView; + + /* package */ boolean mInBatchMode; // Used by IC thread + /* package */ boolean mNeedSync; // Used by IC thread + // Gecko side needs an updated composition from Java; + private boolean mNeedUpdateComposition; // Used by IC thread + private boolean mSuppressKeyUp; // Used by IC thread + + private boolean mGeckoFocused; // Used by Gecko thread + private boolean mIgnoreSelectionChange; // Used by Gecko thread + + private static final int IME_RANGE_CARETPOSITION = 1; + private static final int IME_RANGE_RAWINPUT = 2; + private static final int IME_RANGE_SELECTEDRAWTEXT = 3; + private static final int IME_RANGE_CONVERTEDTEXT = 4; + private static final int IME_RANGE_SELECTEDCONVERTEDTEXT = 5; + + private static final int IME_RANGE_LINE_NONE = 0; + private static final int IME_RANGE_LINE_DOTTED = 1; + private static final int IME_RANGE_LINE_DASHED = 2; + private static final int IME_RANGE_LINE_SOLID = 3; + private static final int IME_RANGE_LINE_DOUBLE = 4; + private static final int IME_RANGE_LINE_WAVY = 5; + + private static final int IME_RANGE_UNDERLINE = 1; + private static final int IME_RANGE_FORECOLOR = 2; + private static final int IME_RANGE_BACKCOLOR = 4; + private static final int IME_RANGE_LINECOLOR = 8; + + @WrapForJNI(dispatchTo = "proxy") + private native void onKeyEvent(int action, int keyCode, int scanCode, int metaState, + long time, int unicodeChar, int baseUnicodeChar, + int domPrintableKeyValue, int repeatCount, int flags, + boolean isSynthesizedImeKey, KeyEvent event); + + private void onKeyEvent(KeyEvent event, int action, int savedMetaState, + boolean isSynthesizedImeKey) { + // Use a separate action argument so we can override the key's original action, + // e.g. change ACTION_MULTIPLE to ACTION_DOWN. That way we don't have to allocate + // a new key event just to change its action field. + // + // Normally we expect event.getMetaState() to reflect the current meta-state; however, + // some software-generated key events may not have event.getMetaState() set, e.g. key + // events from Swype. Therefore, it's necessary to combine the key's meta-states + // with the meta-states that we keep separately in KeyListener + final int metaState = event.getMetaState() | savedMetaState; + final int unmodifiedMetaState = metaState & + ~(KeyEvent.META_ALT_MASK | KeyEvent.META_CTRL_MASK | KeyEvent.META_META_MASK); + final int unicodeChar = event.getUnicodeChar(metaState); + final int domPrintableKeyValue = + unicodeChar >= ' ' ? unicodeChar : + unmodifiedMetaState != metaState ? event.getUnicodeChar(unmodifiedMetaState) : + 0; + onKeyEvent(action, event.getKeyCode(), event.getScanCode(), + metaState, event.getEventTime(), unicodeChar, + // e.g. for Ctrl+A, Android returns 0 for unicodeChar, + // but Gecko expects 'a', so we return that in baseUnicodeChar. + event.getUnicodeChar(0), domPrintableKeyValue, event.getRepeatCount(), + event.getFlags(), isSynthesizedImeKey, event); + } + + @WrapForJNI(dispatchTo = "proxy") + private native void onImeSynchronize(); + + @WrapForJNI(dispatchTo = "proxy") + private native void onImeReplaceText(int start, int end, String text); + + @WrapForJNI(dispatchTo = "proxy") + private native void onImeAddCompositionRange(int start, int end, int rangeType, + int rangeStyles, int rangeLineStyle, + boolean rangeBoldLine, int rangeForeColor, + int rangeBackColor, int rangeLineColor); + + @WrapForJNI(dispatchTo = "proxy") + private native void onImeUpdateComposition(int start, int end); + + @WrapForJNI(dispatchTo = "proxy") + private native void onImeRequestCursorUpdates(int requestMode); + + /** + * Class that encapsulates asynchronous text editing. There are two copies of the + * text, a current copy and a shadow copy. Both can be modified independently through + * the current*** and shadow*** methods, respectively. The current copy can only be + * modified on the Gecko side and reflects the authoritative version of the text. The + * shadow copy can only be modified on the IC side and reflects what we think the + * current text is. Periodically, the shadow copy can be synced to the current copy + * through syncShadowText, so the shadow copy once again refers to the same text as + * the current copy. + */ + private final class AsyncText { + // The current text is the update-to-date version of the text, and is only updated + // on the Gecko side. + private final SpannableStringBuilder mCurrentText = new SpannableStringBuilder(); + // Track changes on the current side for syncing purposes. + // Start of the changed range in current text since last sync. + private int mCurrentStart = Integer.MAX_VALUE; + // End of the changed range (before the change) in current text since last sync. + private int mCurrentOldEnd; + // End of the changed range (after the change) in current text since last sync. + private int mCurrentNewEnd; + // Track selection changes separately. + private boolean mCurrentSelectionChanged; + + // The shadow text is what we think the current text is on the Java side, and is + // periodically synced with the current text. + private final SpannableStringBuilder mShadowText = new SpannableStringBuilder(); + // Track changes on the shadow side for syncing purposes. + // Start of the changed range in shadow text since last sync. + private int mShadowStart = Integer.MAX_VALUE; + // End of the changed range (before the change) in shadow text since last sync. + private int mShadowOldEnd; + // End of the changed range (after the change) in shadow text since last sync. + private int mShadowNewEnd; + + private void addCurrentChangeLocked(final int start, final int oldEnd, final int newEnd) { + // Merge the new change into any existing change. + mCurrentStart = Math.min(mCurrentStart, start); + mCurrentOldEnd += Math.max(0, oldEnd - mCurrentNewEnd); + mCurrentNewEnd = newEnd + Math.max(0, mCurrentNewEnd - oldEnd); + } + + public synchronized void currentReplace(final int start, final int end, + final CharSequence newText) { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + mCurrentText.replace(start, end, newText); + addCurrentChangeLocked(start, end, start + newText.length()); + } + + public synchronized void currentSetSelection(final int start, final int end) { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + Selection.setSelection(mCurrentText, start, end); + mCurrentSelectionChanged = true; + } + + public synchronized void currentSetSpan(final Object obj, final int start, + final int end, final int flags) { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + mCurrentText.setSpan(obj, start, end, flags); + addCurrentChangeLocked(start, end, end); + } + + public synchronized void currentRemoveSpan(final Object obj) { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + if (obj == null) { + mCurrentText.clearSpans(); + addCurrentChangeLocked(0, mCurrentText.length(), mCurrentText.length()); + return; + } + final int start = mCurrentText.getSpanStart(obj); + final int end = mCurrentText.getSpanEnd(obj); + if (start < 0 || end < 0) { + return; + } + mCurrentText.removeSpan(obj); + addCurrentChangeLocked(start, end, end); + } + + // Return Spanned instead of Editable because the returned object is supposed to + // be read-only. Editing should be done through one of the current*** methods. + public Spanned getCurrentText() { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + return mCurrentText; + } + + private void addShadowChange(final int start, final int oldEnd, final int newEnd) { + // Merge the new change into any existing change. + mShadowStart = Math.min(mShadowStart, start); + mShadowOldEnd += Math.max(0, oldEnd - mShadowNewEnd); + mShadowNewEnd = newEnd + Math.max(0, mShadowNewEnd - oldEnd); + } + + public void shadowReplace(final int start, final int end, + final CharSequence newText) + { + if (DEBUG) { + assertOnIcThread(); + } + mShadowText.replace(start, end, newText); + addShadowChange(start, end, start + newText.length()); + } + + public void shadowSetSpan(final Object obj, final int start, + final int end, final int flags) { + if (DEBUG) { + assertOnIcThread(); + } + mShadowText.setSpan(obj, start, end, flags); + addShadowChange(start, end, end); + } + + public void shadowRemoveSpan(final Object obj) { + if (DEBUG) { + assertOnIcThread(); + } + if (obj == null) { + mShadowText.clearSpans(); + addShadowChange(0, mShadowText.length(), mShadowText.length()); + return; + } + final int start = mShadowText.getSpanStart(obj); + final int end = mShadowText.getSpanEnd(obj); + if (start < 0 || end < 0) { + return; + } + mShadowText.removeSpan(obj); + addShadowChange(start, end, end); + } + + // Return Spanned instead of Editable because the returned object is supposed to + // be read-only. Editing should be done through one of the shadow*** methods. + public Spanned getShadowText() { + if (DEBUG) { + assertOnIcThread(); + } + return mShadowText; + } + + public synchronized void syncShadowText(final GeckoEditableListener listener) { + if (DEBUG) { + assertOnIcThread(); + } + + if (mCurrentStart > mCurrentOldEnd && mShadowStart > mShadowOldEnd) { + // Still check selection changes. + if (!mCurrentSelectionChanged) { + return; + } + final int start = Selection.getSelectionStart(mCurrentText); + final int end = Selection.getSelectionEnd(mCurrentText); + Selection.setSelection(mShadowText, start, end); + mCurrentSelectionChanged = false; + + if (listener != null) { + listener.onSelectionChange(); + } + return; + } + + // Copy the portion of the current text that has changed over to the shadow + // text, with consideration for any concurrent changes in the shadow text. + final int start = Math.min(mShadowStart, mCurrentStart); + final int shadowEnd = mShadowNewEnd + Math.max(0, mCurrentOldEnd - mShadowOldEnd); + final int currentEnd = mCurrentNewEnd + Math.max(0, mShadowOldEnd - mCurrentOldEnd); + + // Perform replacement in two steps (delete and insert) so that old spans are + // properly deleted before identical new spans are inserted. Otherwise the new + // spans won't be inserted due to the text already having the old spans. + mShadowText.delete(start, shadowEnd); + mShadowText.insert(start, mCurrentText, start, currentEnd); + + // SpannableStringBuilder has some internal logic to fix up selections, but we + // don't want that, so we always fix up the selection a second time. + final int selStart = Selection.getSelectionStart(mCurrentText); + final int selEnd = Selection.getSelectionEnd(mCurrentText); + Selection.setSelection(mShadowText, selStart, selEnd); + + if (DEBUG && !mShadowText.equals(mCurrentText)) { + // Sanity check. + throw new IllegalStateException("Failed to sync: " + + mShadowStart + '-' + mShadowOldEnd + '-' + mShadowNewEnd + '/' + + mCurrentStart + '-' + mCurrentOldEnd + '-' + mCurrentNewEnd); + } + + if (listener != null) { + // Call onTextChange after selection fix-up but before we call + // onSelectionChange. + listener.onTextChange(); + + if (mCurrentSelectionChanged || (mCurrentOldEnd != mCurrentNewEnd && + (selStart >= mCurrentStart || selEnd >= mCurrentStart))) { + listener.onSelectionChange(); + } + } + + // These values ensure the first change is properly added. + mCurrentStart = mShadowStart = Integer.MAX_VALUE; + mCurrentOldEnd = mShadowOldEnd = 0; + mCurrentNewEnd = mShadowNewEnd = 0; + mCurrentSelectionChanged = false; + } + } + + /* An action that alters the Editable + + Each action corresponds to a Gecko event. While the Gecko event is being sent to the Gecko + thread, the action stays on top of mActions queue. After the Gecko event is processed and + replied, the action is removed from the queue + */ + private static final class Action { + // For input events (keypress, etc.); use with onImeSynchronize + static final int TYPE_EVENT = 0; + // For Editable.replace() call; use with onImeReplaceText + static final int TYPE_REPLACE_TEXT = 1; + // For Editable.setSpan() call; use with onImeSynchronize + static final int TYPE_SET_SPAN = 2; + // For Editable.removeSpan() call; use with onImeSynchronize + static final int TYPE_REMOVE_SPAN = 3; + // For switching handler; use with onImeSynchronize + static final int TYPE_SET_HANDLER = 4; + + final int mType; + int mStart; + int mEnd; + CharSequence mSequence; + Object mSpanObject; + int mSpanFlags; + Handler mHandler; + + Action(int type) { + mType = type; + } + + static Action newReplaceText(CharSequence text, int start, int end) { + if (start < 0 || start > end) { + Log.e(LOGTAG, "invalid replace text offsets: " + start + " to " + end); + throw new IllegalArgumentException("invalid replace text offsets"); + } + + final Action action = new Action(TYPE_REPLACE_TEXT); + action.mSequence = text; + action.mStart = start; + action.mEnd = end; + return action; + } + + static Action newSetSpan(Object object, int start, int end, int flags) { + if (start < 0 || start > end) { + Log.e(LOGTAG, "invalid span offsets: " + start + " to " + end); + throw new IllegalArgumentException("invalid span offsets"); + } + final Action action = new Action(TYPE_SET_SPAN); + action.mSpanObject = object; + action.mStart = start; + action.mEnd = end; + action.mSpanFlags = flags; + return action; + } + + static Action newRemoveSpan(Object object) { + final Action action = new Action(TYPE_REMOVE_SPAN); + action.mSpanObject = object; + return action; + } + + static Action newSetHandler(Handler handler) { + final Action action = new Action(TYPE_SET_HANDLER); + action.mHandler = handler; + return action; + } + } + + private void icOfferAction(final Action action) { + if (DEBUG) { + assertOnIcThread(); + Log.d(LOGTAG, "offer: Action(" + + getConstantName(Action.class, "TYPE_", action.mType) + ")"); + } + + if (mListener == null) { + // We haven't initialized or we've been destroyed. + return; + } + + mActions.offer(action); + + switch (action.mType) { + case Action.TYPE_EVENT: + case Action.TYPE_SET_HANDLER: + onImeSynchronize(); + break; + + case Action.TYPE_SET_SPAN: + mText.shadowSetSpan(action.mSpanObject, action.mStart, + action.mEnd, action.mSpanFlags); + action.mSequence = TextUtils.substring( + mText.getShadowText(), action.mStart, action.mEnd); + + mNeedUpdateComposition |= (action.mSpanFlags & Spanned.SPAN_INTERMEDIATE) == 0 && + ((action.mSpanFlags & Spanned.SPAN_COMPOSING) != 0 || + action.mSpanObject == Selection.SELECTION_START || + action.mSpanObject == Selection.SELECTION_END); + + onImeSynchronize(); + break; + + case Action.TYPE_REMOVE_SPAN: + final int flags = mText.getShadowText().getSpanFlags(action.mSpanObject); + mText.shadowRemoveSpan(action.mSpanObject); + + mNeedUpdateComposition |= (flags & Spanned.SPAN_INTERMEDIATE) == 0 && + (flags & Spanned.SPAN_COMPOSING) != 0; + + onImeSynchronize(); + break; + + case Action.TYPE_REPLACE_TEXT: + // Always sync text after a replace action, so that if the Gecko + // text is not changed, we will revert the shadow text to before. + mNeedSync = true; + + // Because we get composition styling here essentially for free, + // we don't need to check if we're in batch mode. + if (!icMaybeSendComposition( + action.mSequence, /* useEntireText */ true, /* notifyGecko */ false)) { + // Since we don't have a composition, we can try sending key events. + sendCharKeyEvents(action); + } + mText.shadowReplace(action.mStart, action.mEnd, action.mSequence); + onImeReplaceText(action.mStart, action.mEnd, action.mSequence.toString()); + break; + + default: + throw new IllegalStateException("Action not processed"); + } + } + + private KeyEvent [] synthesizeKeyEvents(CharSequence cs) { + try { + if (mKeyMap == null) { + mKeyMap = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); + } + } catch (Exception e) { + // KeyCharacterMap.UnavailableException is not found on Gingerbread; + // besides, it seems like HC and ICS will throw something other than + // KeyCharacterMap.UnavailableException; so use a generic Exception here + return null; + } + KeyEvent [] keyEvents = mKeyMap.getEvents(cs.toString().toCharArray()); + if (keyEvents == null || keyEvents.length == 0) { + return null; + } + return keyEvents; + } + + private void sendCharKeyEvents(Action action) { + if (action.mSequence.length() != 1 || + (action.mSequence instanceof Spannable && + ((Spannable)action.mSequence).nextSpanTransition( + -1, Integer.MAX_VALUE, null) < Integer.MAX_VALUE)) { + // Spans are not preserved when we use key events, + // so we need the sequence to not have any spans + return; + } + KeyEvent [] keyEvents = synthesizeKeyEvents(action.mSequence); + if (keyEvents == null) { + return; + } + for (KeyEvent event : keyEvents) { + if (KeyEvent.isModifierKey(event.getKeyCode())) { + continue; + } + if (event.getAction() == KeyEvent.ACTION_UP && mSuppressKeyUp) { + continue; + } + if (DEBUG) { + Log.d(LOGTAG, "sending: " + event); + } + onKeyEvent(event, event.getAction(), + /* metaState */ 0, /* isSynthesizedImeKey */ true); + } + } + + @WrapForJNI(calledFrom = "gecko") + GeckoEditable(final GeckoView v) { + if (DEBUG) { + // Called by nsWindow. + ThreadUtils.assertOnGeckoThread(); + } + + mText = new AsyncText(); + mActions = new ConcurrentLinkedQueue<Action>(); + + final Class<?>[] PROXY_INTERFACES = { Editable.class }; + mProxy = (Editable)Proxy.newProxyInstance( + Editable.class.getClassLoader(), + PROXY_INTERFACES, this); + + mIcRunHandler = mIcPostHandler = ThreadUtils.getUiHandler(); + + onViewChange(v); + } + + @WrapForJNI(dispatchTo = "proxy") @Override + protected native void disposeNative(); + + @WrapForJNI(calledFrom = "gecko") + private void onViewChange(final GeckoView v) { + if (DEBUG) { + // Called by nsWindow. + ThreadUtils.assertOnGeckoThread(); + Log.d(LOGTAG, "onViewChange(" + v + ")"); + } + + final GeckoEditableListener newListener = + v != null ? GeckoInputConnection.create(v, this) : null; + + final Runnable setListenerRunnable = new Runnable() { + @Override + public void run() { + if (DEBUG) { + Log.d(LOGTAG, "onViewChange (set listener)"); + } + + mListener = newListener; + + if (newListener == null) { + // We're being destroyed. By this point, we should have cleared all + // pending Runnables on the IC thread, so it's safe to call + // disposeNative here. + GeckoEditable.this.disposeNative(); + } + } + }; + + // Post to UI thread first to make sure any code that is using the old input + // connection has finished running, before we switch to a new input connection or + // before we clear the input connection on destruction. + final Handler icHandler = mIcPostHandler; + ThreadUtils.postToUiThread(new Runnable() { + @Override + public void run() { + if (DEBUG) { + Log.d(LOGTAG, "onViewChange (set IC)"); + } + + if (mView != null) { + // Detach the previous view. + mView.setInputConnectionListener(null); + } + if (v != null) { + // And attach the new view. + v.setInputConnectionListener((InputConnectionListener) newListener); + } + + mView = v; + icHandler.post(setListenerRunnable); + } + }); + } + + private boolean onIcThread() { + return mIcRunHandler.getLooper() == Looper.myLooper(); + } + + private void assertOnIcThread() { + ThreadUtils.assertOnThread(mIcRunHandler.getLooper().getThread(), AssertBehavior.THROW); + } + + private void geckoPostToIc(Runnable runnable) { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + mIcPostHandler.post(runnable); + } + + private Object getField(Object obj, String field, Object def) { + try { + return obj.getClass().getField(field).get(obj); + } catch (Exception e) { + return def; + } + } + + /** + * Send composition ranges to Gecko for the entire shadow text. + */ + private void icMaybeSendComposition() { + if (!mNeedUpdateComposition) { + return; + } + + icMaybeSendComposition(mText.getShadowText(), + /* useEntireText */ false, /* notifyGecko */ true); + } + + /** + * Send composition ranges to Gecko if the text has composing spans. + * + * @param sequence Text with possible composing spans + * @param useEntireText If text has composing spans, treat the entire text as + * a Gecko composition, instead of just the spanned part. + * @param notifyGecko Notify Gecko of the new composition ranges; + * otherwise, the caller is responsible for notifying Gecko. + * @return Whether there was a composition + */ + private boolean icMaybeSendComposition(final CharSequence sequence, + final boolean useEntireText, + final boolean notifyGecko) { + mNeedUpdateComposition = false; + + int selStart = Selection.getSelectionStart(sequence); + int selEnd = Selection.getSelectionEnd(sequence); + + if (sequence instanceof Spanned) { + final Spanned text = (Spanned) sequence; + final Object[] spans = text.getSpans(0, text.length(), Object.class); + boolean found = false; + int composingStart = useEntireText ? 0 : Integer.MAX_VALUE; + int composingEnd = useEntireText ? text.length() : 0; + + // Find existence and range of any composing spans (spans with the + // SPAN_COMPOSING flag set). + for (Object span : spans) { + if ((text.getSpanFlags(span) & Spanned.SPAN_COMPOSING) == 0) { + continue; + } + found = true; + if (useEntireText) { + break; + } + composingStart = Math.min(composingStart, text.getSpanStart(span)); + composingEnd = Math.max(composingEnd, text.getSpanEnd(span)); + } + + if (useEntireText && (selStart < 0 || selEnd < 0)) { + selStart = composingEnd; + selEnd = composingEnd; + } + + if (found) { + icSendComposition(text, selStart, selEnd, composingStart, composingEnd); + if (notifyGecko) { + onImeUpdateComposition(composingStart, composingEnd); + } + return true; + } + } + + if (notifyGecko) { + // Set the selection by using a composition without ranges + onImeUpdateComposition(selStart, selEnd); + } + + if (DEBUG) { + Log.d(LOGTAG, "icSendComposition(): no composition"); + } + return false; + } + + private void icSendComposition(final Spanned text, + final int selStart, final int selEnd, + final int composingStart, final int composingEnd) { + if (DEBUG) { + assertOnIcThread(); + Log.d(LOGTAG, "icSendComposition(\"" + text + "\", " + + composingStart + ", " + composingEnd + ")"); + } + if (DEBUG) { + Log.d(LOGTAG, " range = " + composingStart + "-" + composingEnd); + Log.d(LOGTAG, " selection = " + selStart + "-" + selEnd); + } + + if (selEnd >= composingStart && selEnd <= composingEnd) { + onImeAddCompositionRange( + selEnd - composingStart, selEnd - composingStart, + IME_RANGE_CARETPOSITION, 0, 0, false, 0, 0, 0); + } + + int rangeStart = composingStart; + TextPaint tp = new TextPaint(); + TextPaint emptyTp = new TextPaint(); + // set initial foreground color to 0, because we check for tp.getColor() == 0 + // below to decide whether to pass a foreground color to Gecko + emptyTp.setColor(0); + do { + int rangeType, rangeStyles = 0, rangeLineStyle = IME_RANGE_LINE_NONE; + boolean rangeBoldLine = false; + int rangeForeColor = 0, rangeBackColor = 0, rangeLineColor = 0; + int rangeEnd = text.nextSpanTransition(rangeStart, composingEnd, Object.class); + + if (selStart > rangeStart && selStart < rangeEnd) { + rangeEnd = selStart; + } else if (selEnd > rangeStart && selEnd < rangeEnd) { + rangeEnd = selEnd; + } + CharacterStyle[] styleSpans = + text.getSpans(rangeStart, rangeEnd, CharacterStyle.class); + + if (DEBUG) { + Log.d(LOGTAG, " found " + styleSpans.length + " spans @ " + + rangeStart + "-" + rangeEnd); + } + + if (styleSpans.length == 0) { + rangeType = (selStart == rangeStart && selEnd == rangeEnd) + ? IME_RANGE_SELECTEDRAWTEXT + : IME_RANGE_RAWINPUT; + } else { + rangeType = (selStart == rangeStart && selEnd == rangeEnd) + ? IME_RANGE_SELECTEDCONVERTEDTEXT + : IME_RANGE_CONVERTEDTEXT; + tp.set(emptyTp); + for (CharacterStyle span : styleSpans) { + span.updateDrawState(tp); + } + int tpUnderlineColor = 0; + float tpUnderlineThickness = 0.0f; + + // These TextPaint fields only exist on Android ICS+ and are not in the SDK. + tpUnderlineColor = (Integer)getField(tp, "underlineColor", 0); + tpUnderlineThickness = (Float)getField(tp, "underlineThickness", 0.0f); + if (tpUnderlineColor != 0) { + rangeStyles |= IME_RANGE_UNDERLINE | IME_RANGE_LINECOLOR; + rangeLineColor = tpUnderlineColor; + // Approximately translate underline thickness to what Gecko understands + if (tpUnderlineThickness <= 0.5f) { + rangeLineStyle = IME_RANGE_LINE_DOTTED; + } else { + rangeLineStyle = IME_RANGE_LINE_SOLID; + if (tpUnderlineThickness >= 2.0f) { + rangeBoldLine = true; + } + } + } else if (tp.isUnderlineText()) { + rangeStyles |= IME_RANGE_UNDERLINE; + rangeLineStyle = IME_RANGE_LINE_SOLID; + } + if (tp.getColor() != 0) { + rangeStyles |= IME_RANGE_FORECOLOR; + rangeForeColor = tp.getColor(); + } + if (tp.bgColor != 0) { + rangeStyles |= IME_RANGE_BACKCOLOR; + rangeBackColor = tp.bgColor; + } + } + onImeAddCompositionRange( + rangeStart - composingStart, rangeEnd - composingStart, + rangeType, rangeStyles, rangeLineStyle, rangeBoldLine, + rangeForeColor, rangeBackColor, rangeLineColor); + rangeStart = rangeEnd; + + if (DEBUG) { + Log.d(LOGTAG, " added " + rangeType + + " : " + Integer.toHexString(rangeStyles) + + " : " + Integer.toHexString(rangeForeColor) + + " : " + Integer.toHexString(rangeBackColor)); + } + } while (rangeStart < composingEnd); + } + + // GeckoEditableClient interface + + @Override + public void sendKeyEvent(final KeyEvent event, int action, int metaState) { + if (DEBUG) { + assertOnIcThread(); + Log.d(LOGTAG, "sendKeyEvent(" + event + ", " + action + ", " + metaState + ")"); + } + /* + We are actually sending two events to Gecko here, + 1. Event from the event parameter (key event) + 2. Sync event from the icOfferAction call + The first event is a normal event that does not reply back to us, + the second sync event will have a reply, during which we see that there is a pending + event-type action, and update the shadow text accordingly. + */ + icMaybeSendComposition(); + onKeyEvent(event, action, metaState, /* isSynthesizedImeKey */ false); + icOfferAction(new Action(Action.TYPE_EVENT)); + } + + @Override + public Editable getEditable() { + if (!onIcThread()) { + // Android may be holding an old InputConnection; ignore + if (DEBUG) { + Log.i(LOGTAG, "getEditable() called on non-IC thread"); + } + return null; + } + if (mListener == null) { + // We haven't initialized or we've been destroyed. + return null; + } + return mProxy; + } + + @Override + public void setBatchMode(boolean inBatchMode) { + if (!onIcThread()) { + // Android may be holding an old InputConnection; ignore + if (DEBUG) { + Log.i(LOGTAG, "setBatchMode() called on non-IC thread"); + } + return; + } + + mInBatchMode = inBatchMode; + + if (!inBatchMode && mNeedSync) { + icSyncShadowText(); + } + } + + /* package */ void icSyncShadowText() { + if (mListener == null) { + // Not yet attached or already destroyed. + return; + } + + if (mInBatchMode || !mActions.isEmpty()) { + mNeedSync = true; + return; + } + + mNeedSync = false; + mText.syncShadowText(mListener); + } + + private void geckoScheduleSyncShadowText() { + if (DEBUG) { + ThreadUtils.assertOnGeckoThread(); + } + geckoPostToIc(new Runnable() { + @Override + public void run() { + icSyncShadowText(); + } + }); + } + + @Override + public void setSuppressKeyUp(boolean suppress) { + if (DEBUG) { + assertOnIcThread(); + } + // Suppress key up event generated as a result of + // translating characters to key events + mSuppressKeyUp = suppress; + } + + @Override // GeckoEditableClient + public Handler setInputConnectionHandler(final Handler handler) { + if (handler == mIcRunHandler) { + return mIcRunHandler; + } + if (DEBUG) { + assertOnIcThread(); + } + + // There are three threads at this point: Gecko thread, old IC thread, and new IC + // thread, and we want to safely switch from old IC thread to new IC thread. + // We first send a TYPE_SET_HANDLER action to the Gecko thread; this ensures that + // the Gecko thread is stopped at a known point. At the same time, the old IC + // thread blocks on the action; this ensures that the old IC thread is stopped at + // a known point. Finally, inside the Gecko thread, we post a Runnable to the old + // IC thread; this Runnable switches from old IC thread to new IC thread. We + // switch IC thread on the old IC thread to ensure any pending Runnables on the + // old IC thread are processed before we switch over. Inside the Gecko thread, we + // also post a Runnable to the new IC thread; this Runnable blocks until the + // switch is complete; this ensures that the new IC thread won't accept + // InputConnection calls until after the switch. + + handler.post(new Runnable() { // Make the new IC thread wait. + @Override + public void run() { + synchronized (handler) { + while (mIcRunHandler != handler) { + try { + handler.wait(); + } catch (final InterruptedException e) { + } + } + } + } + }); + + icOfferAction(Action.newSetHandler(handler)); + return handler; + } + + @Override // GeckoEditableClient + public void postToInputConnection(final Runnable runnable) { + mIcPostHandler.post(runnable); + } + + @Override // GeckoEditableClient + public void requestCursorUpdates(int requestMode) { + onImeRequestCursorUpdates(requestMode); + } + + private void geckoSetIcHandler(final Handler newHandler) { + geckoPostToIc(new Runnable() { // posting to old IC thread + @Override + public void run() { + synchronized (newHandler) { + mIcRunHandler = newHandler; + newHandler.notify(); + } + } + }); + + // At this point, all future Runnables should be posted to the new IC thread, but + // we don't switch mIcRunHandler yet because there may be pending Runnables on the + // old IC thread still waiting to run. + mIcPostHandler = newHandler; + } + + private void geckoActionReply(final Action action) { + if (!mGeckoFocused) { + if (DEBUG) { + Log.d(LOGTAG, "discarding stale reply"); + } + return; + } + + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + Log.d(LOGTAG, "reply: Action(" + + getConstantName(Action.class, "TYPE_", action.mType) + ")"); + } + switch (action.mType) { + case Action.TYPE_SET_SPAN: + final int len = mText.getCurrentText().length(); + if (action.mStart > len || action.mEnd > len || + !TextUtils.substring(mText.getCurrentText(), action.mStart, + action.mEnd).equals(action.mSequence)) { + if (DEBUG) { + Log.d(LOGTAG, "discarding stale set span call"); + } + break; + } + mText.currentSetSpan(action.mSpanObject, action.mStart, action.mEnd, action.mSpanFlags); + break; + + case Action.TYPE_REMOVE_SPAN: + mText.currentRemoveSpan(action.mSpanObject); + break; + + case Action.TYPE_SET_HANDLER: + geckoSetIcHandler(action.mHandler); + break; + } + } + + private void notifyCommitComposition() { + // Gecko already committed its composition. However, Android keyboards + // have trouble dealing with us removing the composition manually on + // the Java side. Therefore, we keep the composition intact on the Java + // side. The text content should still be in-sync on both sides. + } + + private void notifyCancelComposition() { + // Composition should have been canceled on our side + // through text update notifications; verify that here. + if (DEBUG) { + final Spanned text = mText.getCurrentText(); + final Object[] spans = text.getSpans(0, text.length(), Object.class); + for (Object span : spans) { + if ((text.getSpanFlags(span) & Spanned.SPAN_COMPOSING) != 0) { + throw new IllegalStateException("composition not cancelled"); + } + } + } + } + + @WrapForJNI(calledFrom = "gecko") + private void notifyIME(final int type) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + // NOTIFY_IME_REPLY_EVENT is logged separately, inside geckoActionReply() + if (type != GeckoEditableListener.NOTIFY_IME_REPLY_EVENT) { + Log.d(LOGTAG, "notifyIME(" + + getConstantName(GeckoEditableListener.class, "NOTIFY_IME_", type) + + ")"); + } + } + + if (type == GeckoEditableListener.NOTIFY_IME_REPLY_EVENT) { + geckoActionReply(mActions.poll()); + if (!mGeckoFocused || !mActions.isEmpty()) { + // Only post to IC thread below when the queue is empty. + return; + } + } else if (type == GeckoEditableListener.NOTIFY_IME_TO_COMMIT_COMPOSITION) { + notifyCommitComposition(); + return; + } else if (type == GeckoEditableListener.NOTIFY_IME_TO_CANCEL_COMPOSITION) { + notifyCancelComposition(); + return; + } + + geckoPostToIc(new Runnable() { + @Override + public void run() { + if (type == GeckoEditableListener.NOTIFY_IME_REPLY_EVENT) { + if (mNeedSync) { + icSyncShadowText(); + } + return; + } + + if (type == GeckoEditableListener.NOTIFY_IME_OF_FOCUS && mListener != null) { + mNeedSync = false; + mText.syncShadowText(/* listener */ null); + } + + if (mListener != null) { + mListener.notifyIME(type); + } + } + }); + + // Update the mGeckoFocused flag. + if (type == GeckoEditableListener.NOTIFY_IME_OF_BLUR) { + mGeckoFocused = false; + } else if (type == GeckoEditableListener.NOTIFY_IME_OF_FOCUS) { + mGeckoFocused = true; + } + } + + @WrapForJNI(calledFrom = "gecko") + private void notifyIMEContext(final int state, final String typeHint, + final String modeHint, final String actionHint) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + Log.d(LOGTAG, "notifyIMEContext(" + + getConstantName(GeckoEditableListener.class, "IME_STATE_", state) + + ", \"" + typeHint + "\", \"" + modeHint + "\", \"" + actionHint + "\")"); + } + geckoPostToIc(new Runnable() { + @Override + public void run() { + if (mListener == null) { + return; + } + mListener.notifyIMEContext(state, typeHint, modeHint, actionHint); + } + }); + } + + @WrapForJNI(calledFrom = "gecko", exceptionMode = "ignore") + private void onSelectionChange(final int start, final int end) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + Log.d(LOGTAG, "onSelectionChange(" + start + ", " + end + ")"); + } + + final int currentLength = mText.getCurrentText().length(); + if (start < 0 || start > currentLength || end < 0 || end > currentLength) { + Log.e(LOGTAG, "invalid selection notification range: " + + start + " to " + end + ", length: " + currentLength); + throw new IllegalArgumentException("invalid selection notification range"); + } + + if (mIgnoreSelectionChange) { + mIgnoreSelectionChange = false; + } else { + mText.currentSetSelection(start, end); + } + + geckoScheduleSyncShadowText(); + } + + private boolean geckoIsSameText(int start, int oldEnd, CharSequence newText) { + return oldEnd - start == newText.length() && + TextUtils.regionMatches(mText.getCurrentText(), start, newText, 0, oldEnd - start); + } + + @WrapForJNI(calledFrom = "gecko", exceptionMode = "ignore") + private void onTextChange(final CharSequence text, final int start, + final int unboundedOldEnd, final int unboundedNewEnd) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + StringBuilder sb = new StringBuilder("onTextChange("); + debugAppend(sb, text); + sb.append(", ").append(start).append(", ") + .append(unboundedOldEnd).append(", ") + .append(unboundedNewEnd).append(")"); + Log.d(LOGTAG, sb.toString()); + } + if (start < 0 || start > unboundedOldEnd) { + Log.e(LOGTAG, "invalid text notification range: " + + start + " to " + unboundedOldEnd); + throw new IllegalArgumentException("invalid text notification range"); + } + + final int currentLength = mText.getCurrentText().length(); + + /* For the "end" parameters, Gecko can pass in a large + number to denote "end of the text". Fix that here */ + final int oldEnd = unboundedOldEnd > currentLength ? currentLength : unboundedOldEnd; + // new end should always match text + if (unboundedOldEnd <= currentLength && unboundedNewEnd != (start + text.length())) { + Log.e(LOGTAG, "newEnd does not match text: " + unboundedNewEnd + " vs " + + (start + text.length())); + throw new IllegalArgumentException("newEnd does not match text"); + } + + final int newEnd = start + text.length(); + final Action action = mActions.peek(); + + if (start == 0 && unboundedOldEnd > currentLength) { + // Simply replace the text for newly-focused editors. Replace in two steps to + // properly clear composing spans that span the whole range. + mText.currentReplace(0, currentLength, ""); + mText.currentReplace(0, 0, text); + + // Don't ignore the next selection change because we are re-syncing with Gecko + mIgnoreSelectionChange = false; + + } else if (action != null && + action.mType == Action.TYPE_REPLACE_TEXT && + start <= action.mStart && + oldEnd >= action.mEnd && + newEnd >= action.mStart + action.mSequence.length()) { + + // Try to preserve both old spans and new spans in action.mSequence. + // indexInText is where we can find waction.mSequence within the passed in text. + final int startWithinText = action.mStart - start; + int indexInText = TextUtils.indexOf(text, action.mSequence, startWithinText); + if (indexInText < 0 && startWithinText >= action.mSequence.length()) { + indexInText = text.toString().lastIndexOf(action.mSequence.toString(), + startWithinText); + } + + if (indexInText < 0) { + // Text was changed from under us. We are forced to discard any new spans. + mText.currentReplace(start, oldEnd, text); + + // Don't ignore the next selection change because we are forced to re-sync + // with Gecko here. + mIgnoreSelectionChange = false; + + } else if (indexInText == 0 && text.length() == action.mSequence.length() && + oldEnd - start == action.mEnd - action.mStart) { + // The new change exactly matches our saved change, so do a direct replace. + mText.currentReplace(start, oldEnd, action.mSequence); + + // Ignore the next selection change because the selection change is a + // side-effect of the replace-text event we sent. + mIgnoreSelectionChange = true; + + } else { + // The sequence is embedded within the changed text, so we have to perform + // replacement in parts. First replace part of text before the sequence. + mText.currentReplace(start, action.mStart, text.subSequence(0, indexInText)); + + // Then replace part of the text after the sequence. + final int actionStart = indexInText + start; + final int delta = actionStart - action.mStart; + final int actionEnd = delta + action.mEnd; + + final Spanned currentText = mText.getCurrentText(); + final boolean resetSelStart = Selection.getSelectionStart(currentText) == actionEnd; + final boolean resetSelEnd = Selection.getSelectionEnd(currentText) == actionEnd; + + mText.currentReplace(actionEnd, delta + oldEnd, text.subSequence( + indexInText + action.mSequence.length(), text.length())); + + // The replacement above may have shifted our selection, if the selection + // was at the start of the replacement range. If so, we need to reset + // our selection to the previous position. + if (resetSelStart || resetSelEnd) { + mText.currentSetSelection( + resetSelStart ? actionEnd : Selection.getSelectionStart(currentText), + resetSelEnd ? actionEnd : Selection.getSelectionEnd(currentText)); + } + + // Finally replace the sequence itself to preserve new spans. + mText.currentReplace(actionStart, actionEnd, action.mSequence); + + // Ignore the next selection change because the selection change is a + // side-effect of the replace-text event we sent. + mIgnoreSelectionChange = true; + } + + } else if (geckoIsSameText(start, oldEnd, text)) { + // Nothing to do because the text is the same. This could happen when + // the composition is updated for example, in which case we want to keep the + // Java selection. + mIgnoreSelectionChange = mIgnoreSelectionChange || + (action != null && action.mType == Action.TYPE_REPLACE_TEXT); + return; + + } else { + // Gecko side initiated the text change. Replace in two steps to properly + // clear composing spans that span the whole range. + mText.currentReplace(start, oldEnd, ""); + mText.currentReplace(start, start, text); + + // Don't ignore the next selection change because we are forced to re-sync + // with Gecko here. + mIgnoreSelectionChange = false; + } + + // onTextChange is always followed by onSelectionChange, so we let + // onSelectionChange schedule a shadow text sync. + } + + @WrapForJNI(calledFrom = "gecko") + private void onDefaultKeyEvent(final KeyEvent event) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + StringBuilder sb = new StringBuilder("onDefaultKeyEvent("); + sb.append("action=").append(event.getAction()).append(", ") + .append("keyCode=").append(event.getKeyCode()).append(", ") + .append("metaState=").append(event.getMetaState()).append(", ") + .append("time=").append(event.getEventTime()).append(", ") + .append("repeatCount=").append(event.getRepeatCount()).append(")"); + Log.d(LOGTAG, sb.toString()); + } + + geckoPostToIc(new Runnable() { + @Override + public void run() { + if (mListener == null) { + return; + } + mListener.onDefaultKeyEvent(event); + } + }); + } + + @WrapForJNI(calledFrom = "gecko") + private void updateCompositionRects(final RectF[] aRects) { + if (DEBUG) { + // GeckoEditableListener methods should all be called from the Gecko thread + ThreadUtils.assertOnGeckoThread(); + Log.d(LOGTAG, "updateCompositionRects(aRects.length = " + aRects.length + ")"); + } + geckoPostToIc(new Runnable() { + @Override + public void run() { + if (mListener == null) { + return; + } + mListener.updateCompositionRects(aRects); + } + }); + } + + // InvocationHandler interface + + static String getConstantName(Class<?> cls, String prefix, Object value) { + for (Field fld : cls.getDeclaredFields()) { + try { + if (fld.getName().startsWith(prefix) && + fld.get(null).equals(value)) { + return fld.getName(); + } + } catch (IllegalAccessException e) { + } + } + return String.valueOf(value); + } + + static StringBuilder debugAppend(StringBuilder sb, Object obj) { + if (obj == null) { + sb.append("null"); + } else if (obj instanceof GeckoEditable) { + sb.append("GeckoEditable"); + } else if (Proxy.isProxyClass(obj.getClass())) { + debugAppend(sb, Proxy.getInvocationHandler(obj)); + } else if (obj instanceof CharSequence) { + sb.append('"').append(obj.toString().replace('\n', '\u21b2')).append('"'); + } else if (obj.getClass().isArray()) { + sb.append(obj.getClass().getComponentType().getSimpleName()).append('[') + .append(Array.getLength(obj)).append(']'); + } else { + sb.append(obj); + } + return sb; + } + + @Override + public Object invoke(Object proxy, Method method, Object[] args) + throws Throwable { + Object target; + final Class<?> methodInterface = method.getDeclaringClass(); + if (DEBUG) { + // Editable methods should all be called from the IC thread + assertOnIcThread(); + } + if (methodInterface == Editable.class || + methodInterface == Appendable.class || + methodInterface == Spannable.class) { + // Method alters the Editable; route calls to our implementation + target = this; + } else { + target = mText.getShadowText(); + } + Object ret; + try { + ret = method.invoke(target, args); + } catch (InvocationTargetException e) { + // Bug 817386 + // Most likely Gecko has changed the text while GeckoInputConnection is + // trying to access the text. If we pass through the exception here, Fennec + // will crash due to a lack of exception handler. Log the exception and + // return an empty value instead. + if (!(e.getCause() instanceof IndexOutOfBoundsException)) { + // Only handle IndexOutOfBoundsException for now, + // as other exceptions might signal other bugs + throw e; + } + Log.w(LOGTAG, "Exception in GeckoEditable." + method.getName(), e.getCause()); + Class<?> retClass = method.getReturnType(); + if (retClass == Character.TYPE) { + ret = '\0'; + } else if (retClass == Integer.TYPE) { + ret = 0; + } else if (retClass == String.class) { + ret = ""; + } else { + ret = null; + } + } + if (DEBUG) { + StringBuilder log = new StringBuilder(method.getName()); + log.append("("); + if (args != null) { + for (Object arg : args) { + debugAppend(log, arg).append(", "); + } + if (args.length > 0) { + log.setLength(log.length() - 2); + } + } + if (method.getReturnType().equals(Void.TYPE)) { + log.append(")"); + } else { + debugAppend(log.append(") = "), ret); + } + Log.d(LOGTAG, log.toString()); + } + return ret; + } + + // Spannable interface + + @Override + public void removeSpan(Object what) { + if (what == null) { + return; + } + + if (what == Selection.SELECTION_START || + what == Selection.SELECTION_END) { + Log.w(LOGTAG, "selection removed with removeSpan()"); + } + + icOfferAction(Action.newRemoveSpan(what)); + } + + @Override + public void setSpan(Object what, int start, int end, int flags) { + icOfferAction(Action.newSetSpan(what, start, end, flags)); + } + + // Appendable interface + + @Override + public Editable append(CharSequence text) { + return replace(mProxy.length(), mProxy.length(), text, 0, text.length()); + } + + @Override + public Editable append(CharSequence text, int start, int end) { + return replace(mProxy.length(), mProxy.length(), text, start, end); + } + + @Override + public Editable append(char text) { + return replace(mProxy.length(), mProxy.length(), String.valueOf(text), 0, 1); + } + + // Editable interface + + @Override + public InputFilter[] getFilters() { + return mFilters; + } + + @Override + public void setFilters(InputFilter[] filters) { + mFilters = filters; + } + + @Override + public void clearSpans() { + /* XXX this clears the selection spans too, + but there is no way to clear the corresponding selection in Gecko */ + Log.w(LOGTAG, "selection cleared with clearSpans()"); + icOfferAction(Action.newRemoveSpan(/* what */ null)); + } + + @Override + public Editable replace(int st, int en, + CharSequence source, int start, int end) { + + CharSequence text = source; + if (start < 0 || start > end || end > text.length()) { + Log.e(LOGTAG, "invalid replace offsets: " + + start + " to " + end + ", length: " + text.length()); + throw new IllegalArgumentException("invalid replace offsets"); + } + if (start != 0 || end != text.length()) { + text = text.subSequence(start, end); + } + if (mFilters != null) { + // Filter text before sending the request to Gecko + for (int i = 0; i < mFilters.length; ++i) { + final CharSequence cs = mFilters[i].filter( + text, 0, text.length(), mProxy, st, en); + if (cs != null) { + text = cs; + } + } + } + if (text == source) { + // Always create a copy + text = new SpannableString(source); + } + icOfferAction(Action.newReplaceText(text, Math.min(st, en), Math.max(st, en))); + return mProxy; + } + + @Override + public void clear() { + replace(0, mProxy.length(), "", 0, 0); + } + + @Override + public Editable delete(int st, int en) { + return replace(st, en, "", 0, 0); + } + + @Override + public Editable insert(int where, CharSequence text, + int start, int end) { + return replace(where, where, text, start, end); + } + + @Override + public Editable insert(int where, CharSequence text) { + return replace(where, where, text, 0, text.length()); + } + + @Override + public Editable replace(int st, int en, CharSequence text) { + return replace(st, en, text, 0, text.length()); + } + + /* GetChars interface */ + + @Override + public void getChars(int start, int end, char[] dest, int destoff) { + /* overridden Editable interface methods in GeckoEditable must not be called directly + outside of GeckoEditable. Instead, the call must go through mProxy, which ensures + that Java is properly synchronized with Gecko */ + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + /* Spanned interface */ + + @Override + public int getSpanEnd(Object tag) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public int getSpanFlags(Object tag) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public int getSpanStart(Object tag) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public <T> T[] getSpans(int start, int end, Class<T> type) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + @SuppressWarnings("rawtypes") // nextSpanTransition uses raw Class in its Android declaration + public int nextSpanTransition(int start, int limit, Class type) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + /* CharSequence interface */ + + @Override + public char charAt(int index) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public int length() { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public CharSequence subSequence(int start, int end) { + throw new UnsupportedOperationException("method must be called through mProxy"); + } + + @Override + public String toString() { + throw new UnsupportedOperationException("method must be called through mProxy"); + } +} + |