/* * Copyright (c) 1996, 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include "awt_Toolkit.h" #include "awt_TextComponent.h" #include "awt_Canvas.h" #include "jni.h" #include "awt_Font.h" /***********************************************************************/ // struct for _SetText() method struct SetTextStruct { jobject textcomponent; jstring text; }; // struct for _Select() method struct SelectStruct { jobject textcomponent; jint start, end; }; // struct for _EnableEditing() method struct EnableEditingStruct { jobject textcomponent; jboolean on; }; /************************************************************************ * AwtTextComponent fields */ /* java.awt.TextComponent fields */ jfieldID AwtTextComponent::canAccessClipboardID; /************************************************************************ * AwtTextComponent methods */ AwtTextComponent::AwtTextComponent() { m_synthetic = FALSE; m_lStartPos = -1; m_lEndPos = -1; m_lLastPos = -1; m_isLFonly = FALSE; m_EOLchecked = FALSE; // javaEventsMask = 0; // accessibility support } LPCTSTR AwtTextComponent::GetClassName() { return TEXT("EDIT"); /* System provided edit control class */ } /* Set a suitable font to IME against the component font. */ void AwtTextComponent::SetFont(AwtFont* font) { DASSERT(font != NULL); if (font->GetAscent() < 0) { AwtFont::SetupAscent(font); } int index = font->GetInputHFontIndex(); if (index < 0) /* In this case, user cannot get any suitable font for input. */ index = 0; //im --- changed for over the spot composing m_hFont = font->GetHFont(index); SendMessage(WM_SETFONT, (WPARAM)m_hFont, MAKELPARAM(FALSE, 0)); SendMessage(EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELPARAM(1, 1)); /* * WM_SETFONT reverts foreground color to the default for * rich edit controls. So we have to restore it manually. */ SetColor(GetColor()); VERIFY(::InvalidateRect(GetHWnd(), NULL, TRUE)); //im --- end } int AwtTextComponent::RemoveCR(WCHAR *pStr) { int i, nLen = 0; if (pStr) { /* check to see if there are any CR's */ if (wcschr(pStr, L'\r') == NULL) { return static_cast(wcslen(pStr)); } for (i=0; pStr[i] != 0; i++) { if (m_isLFonly == TRUE) { if (pStr[i] == L'\r') { continue; } } else { if (pStr[i] == L'\r' && pStr[i + 1] != L'\n') { continue; } } pStr[nLen++] = pStr[i]; } pStr[nLen] = 0; } return nLen; } MsgRouting AwtTextComponent::WmNotify(UINT notifyCode) { if (notifyCode == EN_CHANGE) { DoCallback("valueChanged", "()V"); } return mrDoDefault; } BOOL AwtTextComponent::IsFocusingMouseMessage(MSG *pMsg) { return pMsg->message == WM_LBUTTONDOWN || pMsg->message == WM_LBUTTONDBLCLK; } MsgRouting AwtTextComponent::HandleEvent(MSG *msg, BOOL synthetic) { MsgRouting returnVal; /* * Store the 'synthetic' parameter so that the WM_PASTE security check * happens only for synthetic events. */ m_synthetic = synthetic; returnVal = AwtComponent::HandleEvent(msg, synthetic); m_synthetic = FALSE; return returnVal; } /* * If this Paste is occuring because of a synthetic Java event (e.g., * a synthesized -V KeyEvent), then verify that the TextComponent * has permission to access the Clipboard before pasting. If permission * is denied, we should throw a SecurityException, but currently do not * because when we detect the security violation, we are in the Toolkit * thread, not the thread which dispatched the illegal event. */ MsgRouting AwtTextComponent::WmPaste() { if (m_synthetic) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); if (env->EnsureLocalCapacity(1) < 0) { return mrConsume; } jobject target = GetTarget(env); jboolean canAccessClipboard = env->GetBooleanField(target, AwtTextComponent::canAccessClipboardID); env->DeleteLocalRef(target); return (canAccessClipboard) ? mrDoDefault : mrConsume; } else { return mrDoDefault; } } //im --- override to over the spot composition void AwtTextComponent::SetCompositionWindow(RECT& rc) { HWND hwnd = ImmGetHWnd(); HIMC hIMC = ImmGetContext(hwnd); // rc is not used for text component. COMPOSITIONFORM cf = { CFS_FORCE_POSITION, {0,0}, {0,0,0,0} }; GetCaretPos(&(cf.ptCurrentPos)); // the proxy is the native focus owner and it contains the composition window // let's convert the position to a coordinate space relative to proxy ::MapWindowPoints(GetHWnd(), GetProxyFocusOwner(), (LPPOINT)&cf.ptCurrentPos, 1); ImmSetCompositionWindow(hIMC, &cf); LOGFONT lf; GetObject(m_hFont, sizeof(LOGFONT), &lf); ImmSetCompositionFont(hIMC, &lf); ImmReleaseContext(hwnd, hIMC); } //im --- end LONG AwtTextComponent::getJavaSelPos(LONG orgPos) { long wlen; long pos = 0; long cur = 0; LPTSTR wbuf; if ((wlen = GetTextLength()) == 0) return 0; wbuf = new TCHAR[wlen + 1]; GetText(wbuf, wlen + 1); if (m_isLFonly == TRUE) { wlen = RemoveCR(wbuf); } while (cur < orgPos && pos++ < wlen) { if (wbuf[cur] == _T('\r') && wbuf[cur + 1] == _T('\n')) { cur++; } cur++; } delete[] wbuf; return pos; } LONG AwtTextComponent::getWin32SelPos(LONG orgPos) { long wlen; long pos = 0; long cur = 0; LPTSTR wbuf; if ((wlen = GetTextLength()) == 0) return 0; wbuf = new TCHAR[wlen + 1]; GetText(wbuf, wlen + 1); if (m_isLFonly == TRUE) { RemoveCR(wbuf); } while (cur < orgPos && pos < wlen) { if (wbuf[pos] == _T('\r') && wbuf[pos + 1] == _T('\n')) { pos++; } pos++; cur++; } delete[] wbuf; return pos; } void AwtTextComponent::CheckLineSeparator(WCHAR *pStr) { if (pStr == NULL) { return; } if (GetTextLength() == 0) { m_EOLchecked = FALSE; } // check to see if there are any LF's if (m_EOLchecked == TRUE || wcschr(pStr, L'\n') == NULL) { return; } for (int i=0; pStr[i] != 0; i++) { if (pStr[i] == L'\n') { if (i > 0 && pStr[i-1] == L'\r') { m_isLFonly = FALSE; } else { m_isLFonly = TRUE; } m_EOLchecked = TRUE; return; } } } void AwtTextComponent::SetSelRange(LONG start, LONG end) { SendMessage(EM_SETSEL, getWin32SelPos(start), getWin32SelPos(end)); // it isn't necessary to wrap this in EM_HIDESELECTION or setting/clearing // ES_NOHIDESEL, as regular edit control honors EM_SCROLLCARET even when not in focus } jstring AwtTextComponent::_GetText(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); jobject self = (jobject)param; AwtTextComponent *c = NULL; jstring result = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { int len = ::GetWindowTextLength(c->GetHWnd()); if (len == 0) { /* Make java null string */ jchar *jc = new jchar[0]; result = env->NewString(jc, 0); delete [] jc; } else { WCHAR* buf = new WCHAR[len + 1]; c->GetText(buf, len + 1); c->RemoveCR(buf); result = JNU_NewStringPlatform(env, buf); delete [] buf; } } ret: env->DeleteGlobalRef(self); if (result != NULL) { jstring globalRef = (jstring)env->NewGlobalRef(result); env->DeleteLocalRef(result); return globalRef; } else { return NULL; } } void AwtTextComponent::_SetText(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); SetTextStruct *sts = (SetTextStruct *)param; jobject self = sts->textcomponent; jstring text = sts->text; AwtTextComponent *c = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { int length = env->GetStringLength(text); WCHAR* buffer = new WCHAR[length + 1]; env->GetStringRegion(text, 0, length, reinterpret_cast(buffer)); buffer[length] = 0; c->CheckLineSeparator(buffer); c->RemoveCR(buffer); c->SetText(buffer); delete[] buffer; } ret: env->DeleteGlobalRef(self); env->DeleteGlobalRef(text); delete sts; } jint AwtTextComponent::_GetSelectionStart(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); jobject self = (jobject)param; jint result = 0; AwtTextComponent *c = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { long start; c->SendMessage(EM_GETSEL, (WPARAM)&start); result = c->getJavaSelPos(start); } ret: env->DeleteGlobalRef(self); return result; } jint AwtTextComponent::_GetSelectionEnd(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); jobject self = (jobject)param; jint result = 0; AwtTextComponent *c = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { long end; c->SendMessage(EM_GETSEL, 0, (LPARAM)&end); result = c->getJavaSelPos(end); } ret: env->DeleteGlobalRef(self); return result; } void AwtTextComponent::_Select(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); SelectStruct *ss = (SelectStruct *)param; jobject self = ss->textcomponent; jint start = ss->start; jint end = ss->end; AwtTextComponent *c = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { c->SetSelRange(start, end); c->SendMessage(EM_SCROLLCARET); } ret: env->DeleteGlobalRef(self); delete ss; } void AwtTextComponent::_EnableEditing(void *param) { JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); EnableEditingStruct *ees = (EnableEditingStruct *)param; jobject self = ees->textcomponent; jboolean on = ees->on; AwtTextComponent *c = NULL; PDATA pData; JNI_CHECK_PEER_GOTO(self, ret); c = (AwtTextComponent *)pData; if (::IsWindow(c->GetHWnd())) { c->SendMessage(EM_SETREADONLY, !on); } ret: env->DeleteGlobalRef(self); delete ees; } /************************************************************************ * WTextComponentPeer native methods */ extern "C" { /* * Class: sun_awt_windows_WTextComponentPeer * Method: getText * Signature: ()Ljava/lang/String; */ JNIEXPORT jstring JNICALL Java_sun_awt_windows_WTextComponentPeer_getText(JNIEnv *env, jobject self) { TRY; jobject selfGlobalRef = env->NewGlobalRef(self); jstring globalRef = (jstring)AwtToolkit::GetInstance().SyncCall( (void*(*)(void*))AwtTextComponent::_GetText, (void *)selfGlobalRef); // selfGlobalRef is deleted in _GetText if (globalRef != NULL) { jstring localRef = (jstring)env->NewLocalRef(globalRef); env->DeleteGlobalRef(globalRef); return localRef; } else { return NULL; } CATCH_BAD_ALLOC_RET(NULL); } /* * Class: sun_awt_windows_WTextComponentPeer * Method: setText * Signature: (Ljava/lang/String;)V */ JNIEXPORT void JNICALL Java_sun_awt_windows_WTextComponentPeer_setText(JNIEnv *env, jobject self, jstring text) { TRY; SetTextStruct *sts = new SetTextStruct; sts->textcomponent = env->NewGlobalRef(self); sts->text = (jstring)env->NewGlobalRef(text); AwtToolkit::GetInstance().SyncCall(AwtTextComponent::_SetText, sts); // global refs and sts are deleted in _SetText CATCH_BAD_ALLOC; } /* * Class: sun_awt_windows_WTextComponentPeer * Method: getSelectionStart * Signature: ()I */ JNIEXPORT jint JNICALL Java_sun_awt_windows_WTextComponentPeer_getSelectionStart(JNIEnv *env, jobject self) { TRY; return static_cast(reinterpret_cast(AwtToolkit::GetInstance().SyncCall( (void *(*)(void *))AwtTextComponent::_GetSelectionStart, env->NewGlobalRef(self)))); // global ref is deleted in _GetSelectionStart() CATCH_BAD_ALLOC_RET(0); } /* * Class: sun_awt_windows_WTextComponentPeer * Method: getSelectionEnd * Signature: ()I */ JNIEXPORT jint JNICALL Java_sun_awt_windows_WTextComponentPeer_getSelectionEnd(JNIEnv *env, jobject self) { TRY; return static_cast(reinterpret_cast(AwtToolkit::GetInstance().SyncCall( (void *(*)(void *))AwtTextComponent::_GetSelectionEnd, env->NewGlobalRef(self)))); // global ref is deleted in _GetSelectionEnd() CATCH_BAD_ALLOC_RET(0); } /* * Class: sun_awt_windows_WTextComponentPeer * Method: select * Signature: (II)V */ JNIEXPORT void JNICALL Java_sun_awt_windows_WTextComponentPeer_select(JNIEnv *env, jobject self, jint start, jint end) { TRY; SelectStruct *ss = new SelectStruct; ss->textcomponent = env->NewGlobalRef(self); ss->start = start; ss->end = end; AwtToolkit::GetInstance().SyncCall(AwtTextComponent::_Select, ss); // global ref and ss are deleted in _Select CATCH_BAD_ALLOC; } /* * Class: sun_awt_windows_WTextComponentPeer * Method: enableEditing * Signature: (Z)V */ JNIEXPORT void JNICALL Java_sun_awt_windows_WTextComponentPeer_enableEditing(JNIEnv *env, jobject self, jboolean on) { TRY; EnableEditingStruct *ees = new EnableEditingStruct; ees->textcomponent = env->NewGlobalRef(self); ees->on = on; AwtToolkit::GetInstance().SyncCall(AwtTextComponent::_EnableEditing, ees); // global ref and ees are deleted in _EnableEditing() CATCH_BAD_ALLOC; } /* * Class: sun_awt_windows_WTextComponentPeer * Method: initIDs * Signature: ()V */ JNIEXPORT void JNICALL Java_sun_awt_windows_WTextComponentPeer_initIDs(JNIEnv *env, jclass cls) { TRY; cls = env->FindClass("java/awt/TextComponent"); if (cls != NULL) { AwtTextComponent::canAccessClipboardID = env->GetFieldID(cls, "canAccessClipboard", "Z"); DASSERT(AwtTextComponent::canAccessClipboardID != NULL); } CATCH_BAD_ALLOC; } // // Accessibility support // /* To be fully implemented in a future release * * Class: sun_awt_windows_WTextComponentPeer * Method: getIndexAtPoint * Signature: (II)I * JNIEXPORT jlong JNICALL Java_sun_awt_windows_WTextComponentPeer_filterEvents(JNIEnv *env, jobject self, jlong mask) { TRY; PDATA pData; JNI_CHECK_PEER_RETURN_NULL(self); AwtTextComponent* c = (AwtTextComponent*)pData; jlong oldMask = c->javaEventsMask; c->javaEventsMask = mask; return oldMask; CATCH_BAD_ALLOC_RET(0); } */ // [[[FIXME]]] need to switch to rich edit field; look for EN_SELCHANGE event instead /* * Handle WmKeyDown to catch keystrokes which may move the caret, * and fire events as appropriate when that happens, if they are wanted * * Note: mouse clicks come through WmKeyDown as well (do they??!?!) * MsgRouting AwtTextComponent::WmKeyDown(UINT wkey, UINT repCnt, UINT flags, BOOL system) { printf("AwtTextComponent::WmKeyDown called\r\n"); // NOTE: WmKeyDown won't be processed 'till well after we return // so we need to modify the values based on the keystroke // static long oldStart = -1; static long oldEnd = -1; // most keystrokes can move the caret // so we'll simply check to see if the caret has moved! if (javaEventsMask & (jlong) java_awt_TextComponent_textSelectionMask) { long start; long end; SendMessage(EM_GETSEL, (WPARAM)&start, (LPARAM)&end); if (start != oldStart || end != oldEnd) { printf(" -> calling TextComponent.selectionValuesChanged()\r\n"); printf(" -> old = (%d, %d); new = (%d, %d)\r\n", oldStart, oldEnd, start, end); DoCallback("selectionValuesChanged", "(II)V", start, end); // let Java-side track details... oldStart = start; oldEnd = end; } } return AwtComponent::WmKeyDown(wkey, repCnt, flags, system); } */ /* To be fully implemented in a future release * * Class: sun_awt_windows_WTextComponentPeer * Method: getIndexAtPoint * Signature: (II)I * JNIEXPORT jint JNICALL Java_sun_awt_windows_WTextComponentPeer_getIndexAtPoint(JNIEnv *env, jobject self, jint x, jint y) { TRY; PDATA pData; // JNI_CHECK_PEER_RETURN_VAL(self, -1); [[[FIXME]]] Peter Korn -> should return -1 here JNI_CHECK_PEER_RETURN_NULL(self); AwtTextComponent* c = (AwtTextComponent*)pData; int indicies = c->SendMessage(EM_CHARFROMPOS, (WPARAM) 0, (LPARAM) MAKELPARAM(x, y)); int index = LOWORD(indicies); // index into the line the (x,y) coord is on int lineIndex = c->SendMessage(EM_LINEINDEX, HIWORD(indicies)); // index of start of line return (index + lineIndex); CATCH_BAD_ALLOC_RET(-1); } */ /* To be fully implemented in a future release * * Class: sun_awt_windows_WTextComponentPeer * Method: getCharacterBounds * Signature: (I)Ljava/awt/Rectangle; * JNIEXPORT jobject JNICALL Java_sun_awt_windows_WTextComponentPeer_getCharacterBounds(JNIEnv *env, jobject self, jint i) { // loop through lines with EM_LINELENGTH? e.g.: // line = 0; ttl = 0; // index is passed in as 'i' above // while (ttl < index) { // ttl += SendMessage(EM_LINELENGTH, line++); // } // line-- (decrement back again) // alternately, we could use EM_LINEINDEX to the same effect; perhaps slightly cleaner: // computedIndex = 0; line = 0; // while (computedIndex < index) { // computedIndex = SendMessage(EM_LINEINDEX, 1 + line++); // } // line--; // EM_POSFROMCHAR - convert char index into a Point // wParam = (LPPOINT) lpPoint; // address of structure // receiving character position // lParam = (LPARAM) wCharIndex; // zero-based index of character // // still need to turn the above into a Rect somehow... // (use font metrics on font info for letter to get height? use // getLineHeight type of message?). // WM_GETFONT - get the font struct for the window control // wParam = lParam = 0 // returns an HFONT // -or- // GetTextMetrics(hDC) to get the text info for the font selected // into the hDC of the control (tmHeight is what we want in the // TEXTMETRIC struct). // also GetCharWidth32() with the char at the index in question to get // the width of that char // *** Can't use GetTextMetrics/GetCharWidth32, as we don't have an hDC!! *** TRY; PDATA pData; JNI_CHECK_PEER_RETURN_NULL(self); AwtComponent* c = (AwtComponent*)pData; /* int line = 0; int lineIndex = 0; while (lineIndex < i) { lineIndex = c->SendMessage(EM_LINEINDEX, 1 + line++); } line--; // line is now the line which contains our character at position 'i' int offsetIndex = i - lineIndex; // offsetIndex is now distance in on the line * / POINT p; c->SendMessage(EM_POSFROMCHAR, (WPARAM) &p, (LPARAM) i); // x coord is meaningful; y may not be // need to calculate charWidth, charHeight, and set p.y to something meangful jint charWidth; jint charHeight; /* HFONT font = c->SendMessage(WM_GETFONT); if (GetCharWidth32(c->hdc, i, i, &charWidth) != 0) { // [[[FIXME]]] need to get hDC! JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2); jobject rect = JNU_NewObjectByName(env, "java/awt/Rectangle", "(IIII)V", (jint) p.x, (jint) p.y, charWidth, charHeight); return rect; } * / return (jobject) 0; CATCH_BAD_ALLOC_RET(0); } */ } /* extern "C" */