/** * @file lltexteditor.h * @brief LLTextEditor base class * * $LicenseInfo:firstyear=2001&license=viewergpl$ * * Copyright (c) 2001-2009, Linden Research, Inc. * * Second Life Viewer Source Code * The source code in this file ("Source Code") is provided by Linden Lab * to you under the terms of the GNU General Public License, version 2.0 * ("GPL"), unless you have obtained a separate licensing agreement * ("Other License"), formally executed by you and Linden Lab. Terms of * the GPL can be found in doc/GPL-license.txt in this distribution, or * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * * There are special exceptions to the terms and conditions of the GPL as * it is applied to this Source Code. View the full text of the exception * in the file doc/FLOSS-exception.txt in this software distribution, or * online at * http://secondlifegrid.net/programs/open_source/licensing/flossexception * * By copying, modifying or distributing this software, you acknowledge * that you have read and understood your obligations described above, * and agree to abide by those obligations. * * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ // Text editor widget to let users enter a a multi-line ASCII document// #ifndef LL_LLTEXTEDITOR_H #define LL_LLTEXTEDITOR_H #include "llrect.h" #include "llkeywords.h" #include "lluictrl.h" #include "llframetimer.h" #include "lldarray.h" #include "llstyle.h" #include "lleditmenuhandler.h" #include "lldarray.h" #include "llpreeditor.h" class LLFontGL; class LLScrollbar; class LLViewBorder; class LLKeywordToken; class LLTextCmd; class LLUICtrlFactory; class LLTextEditor : public LLUICtrl, LLEditMenuHandler, protected LLPreeditor { public: // // Constants // static const llwchar FIRST_EMBEDDED_CHAR = 0x100000; static const llwchar LAST_EMBEDDED_CHAR = 0x10ffff; static const S32 MAX_EMBEDDED_ITEMS = LAST_EMBEDDED_CHAR - FIRST_EMBEDDED_CHAR + 1; LLTextEditor(const std::string& name, const LLRect& rect, S32 max_length, const std::string &default_text, const LLFontGL* glfont = NULL, BOOL allow_embedded_items = FALSE); virtual ~LLTextEditor(); virtual LLXMLNodePtr getXML(bool save_children = true) const; static LLView* fromXML(LLXMLNodePtr node, LLView *parent, class LLUICtrlFactory *factory); void setTextEditorParameters(LLXMLNodePtr node); void setParseHTML(BOOL parsing) {mParseHTML=parsing;} void setParseHighlights(BOOL parsing) {mParseHighlights=parsing;} // mousehandler overrides virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask); virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask); virtual BOOL handleHover(S32 x, S32 y, MASK mask); virtual BOOL handleScrollWheel(S32 x, S32 y, S32 clicks); virtual BOOL handleDoubleClick(S32 x, S32 y, MASK mask ); virtual BOOL handleMiddleMouseDown(S32 x,S32 y,MASK mask); virtual BOOL handleKeyHere(KEY key, MASK mask ); virtual BOOL handleUnicodeCharHere(llwchar uni_char); virtual BOOL handleToolTip(S32 x, S32 y, std::string& msg, LLRect* sticky_rect); virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg); virtual void onMouseCaptureLost(); // view overrides virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE); virtual void draw(); virtual void onFocusReceived(); virtual void onFocusLost(); virtual void setEnabled(BOOL enabled); // uictrl overrides virtual void onTabInto(); virtual void clear(); virtual void setFocus( BOOL b ); virtual BOOL acceptsTextInput() const; virtual BOOL isDirty() const { return( mLastCmd != NULL || (mPristineCmd && (mPristineCmd != mLastCmd)) ); } // LLEditMenuHandler interface virtual void undo(); virtual BOOL canUndo() const; virtual void redo(); virtual BOOL canRedo() const; virtual void cut(); virtual BOOL canCut() const; virtual void copy(); virtual BOOL canCopy() const; virtual void paste(); virtual BOOL canPaste() const; virtual void updatePrimary(); virtual void copyPrimary(); virtual void pastePrimary(); virtual BOOL canPastePrimary() const; virtual void doDelete(); virtual BOOL canDoDelete() const; virtual void selectAll(); virtual BOOL canSelectAll() const; virtual void deselect(); virtual BOOL canDeselect() const; void selectNext(const std::string& search_text_in, BOOL case_insensitive, BOOL wrap = TRUE); BOOL replaceText(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive, BOOL wrap = TRUE); void replaceTextAll(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive); // Undo/redo stack void blockUndo(); // Text editing virtual void makePristine(); BOOL isPristine() const; BOOL allowsEmbeddedItems() const { return mAllowEmbeddedItems; } // inserts text at cursor void insertText(const std::string &text); // appends text at end void appendText(const std::string &wtext, bool allow_undo, bool prepend_newline, const LLStyleSP stylep = NULL); void appendColoredText(const std::string &wtext, bool allow_undo, bool prepend_newline, const LLColor4 &color, const std::string& font_name = LLStringUtil::null); // if styled text starts a line, you need to prepend a newline. void appendStyledText(const std::string &new_text, bool allow_undo, bool prepend_newline, LLStyleSP stylep = NULL); void appendHighlightedText(const std::string &new_text, bool allow_undo, bool prepend_newline, S32 highlight_part, LLStyleSP stylep); // Removes text from the end of document // Does not change highlight or cursor position. void removeTextFromEnd(S32 num_chars); BOOL tryToRevertToPristineState(); void setCursor(S32 row, S32 column); void setCursorPos(S32 offset); void setCursorAndScrollToEnd(); void getLineAndColumnForPosition( S32 position, S32* line, S32* col, BOOL include_wordwrap ); void getCurrentLineAndColumn( S32* line, S32* col, BOOL include_wordwrap ); S32 getLineForPosition(S32 position); S32 getCurrentLine(); void loadKeywords(const std::string& filename, const std::vector& funcs, const std::vector& tooltips, const LLColor3& func_color); LLKeywords::keyword_iterator_t keywordsBegin() { return mKeywords.begin(); } LLKeywords::keyword_iterator_t keywordsEnd() { return mKeywords.end(); } // Color support void setCursorColor(const LLColor4& c) { mCursorColor = c; } void setFgColor( const LLColor4& c ) { mFgColor = c; } void setTextDefaultColor( const LLColor4& c ) { mDefaultColor = c; } void setReadOnlyFgColor( const LLColor4& c ) { mReadOnlyFgColor = c; } void setWriteableBgColor( const LLColor4& c ) { mWriteableBgColor = c; } void setReadOnlyBgColor( const LLColor4& c ) { mReadOnlyBgColor = c; } void setTrackColor( const LLColor4& color ); void setThumbColor( const LLColor4& color ); void setHighlightColor( const LLColor4& color ); void setShadowColor( const LLColor4& color ); // Hacky methods to make it into a word-wrapping, potentially scrolling, // read-only text box. void setBorderVisible(BOOL b); BOOL isBorderVisible() const; void setTakesNonScrollClicks(BOOL b) { mTakesNonScrollClicks = b; } void setHideScrollbarForShortDocs(BOOL b); void setWordWrap( BOOL b ); void setTabsToNextField(BOOL b) { mTabsToNextField = b; } BOOL tabsToNextField() const { return mTabsToNextField; } void setCommitOnFocusLost(BOOL b) { mCommitOnFocusLost = b; } // Hack to handle Notecards virtual BOOL importBuffer(const char* buffer, S32 length ); virtual BOOL exportBuffer(std::string& buffer ); // If takes focus, will take keyboard focus on click. void setTakesFocus(BOOL b) { mTakesFocus = b; } void setSourceID(const LLUUID& id) { mSourceID = id; } const LLUUID& getSourceID() const { return mSourceID; } void setAcceptCallingCardNames(BOOL enable) { mAcceptCallingCardNames = enable; } BOOL acceptsCallingCardNames() const { return mAcceptCallingCardNames; } void setHandleEditKeysDirectly( BOOL b ) { mHandleEditKeysDirectly = b; } // Callbacks static void setLinkColor(LLColor4 color) { mLinkColor = color; } static void setURLCallbacks(void (*callback1) (const std::string& url), bool (*callback2) (const std::string& url), bool (*callback3) (const std::string& url) ) { mURLcallback = callback1; mSecondlifeURLcallback = callback2; mSecondlifeURLcallbackRightClick = callback3;} void setOnScrollEndCallback(void (*callback)(void*), void* userdata); // new methods void setValue(const LLSD& value); LLSD getValue() const; const std::string& getText() const; // Non-undoable void setText(const LLStringExplicit &utf8str); void setWText(const LLWString &wtext); // Returns byte length limit S32 getMaxLength() const { return mMaxTextByteLength; } // Change cursor void startOfLine(); void endOfLine(); void endOfDoc(); BOOL isScrolledToTop(); BOOL isScrolledToBottom(); // Getters const LLWString& getWText() const { return mWText; } llwchar getWChar(S32 pos) const { return mWText[pos]; } LLWString getWSubString(S32 pos, S32 len) const { return mWText.substr(pos, len); } const LLTextSegment* getCurrentSegment() const { return getSegmentAtOffset(mCursorPos); } const LLTextSegment* getPreviousSegment() const; void getSelectedSegments(std::vector& segments) const; static bool isPartOfWord(llwchar c) { return (c == '_') || LLStringOps::isAlnum((char)c); } protected: // // Methods // S32 getLength() const { return mWText.length(); } void getSegmentAndOffset( S32 startpos, S32* segidxp, S32* offsetp ) const; void drawPreeditMarker(); void updateLineStartList(S32 startpos = 0); void updateScrollFromCursor(); void updateTextRect(); const LLRect& getTextRect() const { return mTextRect; } void assignEmbedded(const std::string &s); BOOL truncate(); // Returns true if truncation occurs void removeCharOrTab(); void setCursorAtLocalPos(S32 x, S32 y, BOOL round); S32 getCursorPosFromLocalCoord( S32 local_x, S32 local_y, BOOL round ) const; void indentSelectedLines( S32 spaces ); S32 indentLine( S32 pos, S32 spaces ); void unindentLineBeforeCloseBrace(); S32 getSegmentIdxAtOffset(S32 offset) const; const LLTextSegment* getSegmentAtLocalPos(S32 x, S32 y) const; const LLTextSegment* getSegmentAtOffset(S32 offset) const; void reportBadKeystroke() { make_ui_sound("UISndBadKeystroke"); } BOOL handleNavigationKey(const KEY key, const MASK mask); BOOL handleSpecialKey(const KEY key, const MASK mask, BOOL* return_key_hit); BOOL handleSelectionKey(const KEY key, const MASK mask); BOOL handleControlKey(const KEY key, const MASK mask); BOOL handleEditKey(const KEY key, const MASK mask); BOOL hasSelection() const { return (mSelectionStart !=mSelectionEnd); } BOOL selectionContainsLineBreaks(); void startSelection(); void endSelection(); void deleteSelection(BOOL transient_operation); S32 prevWordPos(S32 cursorPos) const; S32 nextWordPos(S32 cursorPos) const; S32 getLineCount() const { return mLineStartList.size(); } S32 getLineStart( S32 line ) const; void getLineAndOffset(S32 pos, S32* linep, S32* offsetp) const; S32 getPos(S32 line, S32 offset); void changePage(S32 delta); void changeLine(S32 delta); void autoIndent(); void findEmbeddedItemSegments(); virtual BOOL handleMouseUpOverSegment(S32 x, S32 y, MASK mask); virtual llwchar pasteEmbeddedItem(llwchar ext_char) { return ext_char; } virtual void bindEmbeddedChars(const LLFontGL* font) const {} virtual void unbindEmbeddedChars(const LLFontGL* font) const {} S32 findHTMLToken(const std::string &line, S32 pos, BOOL reverse) const; BOOL findHTML(const std::string &line, S32 *begin, S32 *end) const; // Abstract inner base class representing an undoable editor command. // Concrete sub-classes can be defined for operations such as insert, remove, etc. // Used as arguments to the execute() method below. class LLTextCmd { public: LLTextCmd( S32 pos, BOOL group_with_next ) : mPos(pos), mGroupWithNext(group_with_next) {} virtual ~LLTextCmd() {} virtual BOOL execute(LLTextEditor* editor, S32* delta) = 0; virtual S32 undo(LLTextEditor* editor) = 0; virtual S32 redo(LLTextEditor* editor) = 0; virtual BOOL canExtend(S32 pos) const { return FALSE; } virtual void blockExtensions() {} virtual BOOL extendAndExecute( LLTextEditor* editor, S32 pos, llwchar c, S32* delta ) { llassert(0); return 0; } virtual BOOL hasExtCharValue( llwchar value ) const { return FALSE; } // Defined here so they can access protected LLTextEditor editing methods S32 insert(LLTextEditor* editor, S32 pos, const LLWString &wstr) { return editor->insertStringNoUndo( pos, wstr ); } S32 remove(LLTextEditor* editor, S32 pos, S32 length) { return editor->removeStringNoUndo( pos, length ); } S32 overwrite(LLTextEditor* editor, S32 pos, llwchar wc) { return editor->overwriteCharNoUndo(pos, wc); } S32 getPosition() const { return mPos; } BOOL groupWithNext() const { return mGroupWithNext; } private: const S32 mPos; BOOL mGroupWithNext; }; // Here's the method that takes and applies text commands. S32 execute(LLTextCmd* cmd); // Undoable operations void addChar(llwchar c); // at mCursorPos S32 addChar(S32 pos, llwchar wc); S32 overwriteChar(S32 pos, llwchar wc); void removeChar(); S32 removeChar(S32 pos); S32 insert(const S32 pos, const LLWString &wstr, const BOOL group_with_next_op); S32 remove(const S32 pos, const S32 length, const BOOL group_with_next_op); S32 append(const LLWString &wstr, const BOOL group_with_next_op); // Direct operations S32 insertStringNoUndo(S32 pos, const LLWString &wstr); // returns num of chars actually inserted S32 removeStringNoUndo(S32 pos, S32 length); S32 overwriteCharNoUndo(S32 pos, llwchar wc); void resetKeystrokeTimer() { mKeystrokeTimer.reset(); } void updateAllowingLanguageInput(); BOOL hasPreeditString() const; // Overrides LLPreeditor virtual void resetPreedit(); virtual void updatePreedit(const LLWString &preedit_string, const segment_lengths_t &preedit_segment_lengths, const standouts_t &preedit_standouts, S32 caret_position); virtual void markAsPreedit(S32 position, S32 length); virtual void getPreeditRange(S32 *position, S32 *length) const; virtual void getSelectionRange(S32 *position, S32 *length) const; virtual BOOL getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const; virtual S32 getPreeditFontSize() const; // // Protected data // // Probably deserves serious thought to hiding as many of these // as possible behind protected accessor methods. // // I-beam is just after the mCursorPos-th character. S32 mCursorPos; // Use these to determine if a click on an embedded item is a drag or not. S32 mMouseDownX; S32 mMouseDownY; // Are we in the middle of a drag-select? To figure out if there is a current // selection, call hasSelection(). BOOL mIsSelecting; S32 mSelectionStart; S32 mSelectionEnd; S32 mLastSelectionX; S32 mLastSelectionY; BOOL mParseHTML; BOOL mParseHighlights; std::string mHTML; typedef std::vector segment_list_t; segment_list_t mSegments; const LLTextSegment* mHoverSegment; // Scrollbar data class LLScrollbar* mScrollbar; BOOL mHideScrollbarForShortDocs; BOOL mTakesNonScrollClicks; void (*mOnScrollEndCallback)(void*); void *mOnScrollEndData; LLWString mPreeditWString; LLWString mPreeditOverwrittenWString; std::vector mPreeditPositions; std::vector mPreeditStandouts; private: // // Methods // void pasteHelper(bool is_primary); void updateSegments(); void pruneSegments(); void drawBackground(); void drawSelectionBackground(); void drawCursor(); void drawText(); void drawClippedSegment(const LLWString &wtext, S32 seg_start, S32 seg_end, F32 x, F32 y, S32 selection_left, S32 selection_right, const LLStyleSP& color, F32* right_x); void needsReflow() { mReflowNeeded = TRUE; // cursor might have moved, need to scroll mScrollNeeded = TRUE; } void needsScroll() { mScrollNeeded = TRUE; } // // Data // LLKeywords mKeywords; static LLColor4 mLinkColor; static void (*mURLcallback) (const std::string& url); static bool (*mSecondlifeURLcallback) (const std::string& url); static bool (*mSecondlifeURLcallbackRightClick) (const std::string& url); // Concrete LLTextCmd sub-classes used by the LLTextEditor base class class LLTextCmdInsert; class LLTextCmdAddChar; class LLTextCmdOverwriteChar; class LLTextCmdRemove; LLWString mWText; mutable std::string mUTF8Text; mutable BOOL mTextIsUpToDate; S32 mMaxTextByteLength; // Maximum length mText is allowed to be in bytes const LLFontGL* mGLFont; class LLViewBorder* mBorder; BOOL mBaseDocIsPristine; LLTextCmd* mPristineCmd; LLTextCmd* mLastCmd; typedef std::deque undo_stack_t; undo_stack_t mUndoStack; S32 mDesiredXPixel; // X pixel position where the user wants the cursor to be LLRect mTextRect; // The rect in which text is drawn. Excludes borders. // List of offsets and segment index of the start of each line. Always has at least one node (0). struct line_info { line_info(S32 segment, S32 offset) : mSegment(segment), mOffset(offset) {} S32 mSegment; S32 mOffset; }; struct line_info_compare { bool operator()(const line_info& a, const line_info& b) const { if (a.mSegment < b.mSegment) return true; else if (a.mSegment > b.mSegment) return false; else return a.mOffset < b.mOffset; } }; typedef std::vector line_list_t; line_list_t mLineStartList; BOOL mReflowNeeded; BOOL mScrollNeeded; LLFrameTimer mKeystrokeTimer; LLColor4 mCursorColor; LLColor4 mFgColor; LLColor4 mDefaultColor; LLColor4 mReadOnlyFgColor; LLColor4 mWriteableBgColor; LLColor4 mReadOnlyBgColor; LLColor4 mFocusBgColor; BOOL mReadOnly; BOOL mWordWrap; BOOL mShowLineNumbers; BOOL mTabsToNextField; // if true, tab moves focus to next field, else inserts spaces BOOL mCommitOnFocusLost; BOOL mTakesFocus; BOOL mTrackBottom; // if true, keeps scroll position at bottom during resize BOOL mScrolledToBottom; BOOL mAllowEmbeddedItems; BOOL mAcceptCallingCardNames; LLUUID mSourceID; // If true, the standard edit keys (Ctrl-X, Delete, etc,) are handled here //instead of routed by the menu system BOOL mHandleEditKeysDirectly; LLCoordGL mLastIMEPosition; // Last position of the IME editor }; // end class LLTextEditor class LLTextSegment { public: // for creating a compare value LLTextSegment(S32 start); LLTextSegment( const LLStyleSP& style, S32 start, S32 end ); LLTextSegment( const LLColor4& color, S32 start, S32 end, BOOL is_visible); LLTextSegment( const LLColor4& color, S32 start, S32 end ); LLTextSegment( const LLColor3& color, S32 start, S32 end ); S32 getStart() const { return mStart; } S32 getEnd() const { return mEnd; } void setEnd( S32 end ) { mEnd = end; } const LLColor4& getColor() const { return mStyle->getColor(); } void setColor(const LLColor4 &color) { mStyle->setColor(color); } const LLStyleSP& getStyle() const { return mStyle; } void setStyle(const LLStyleSP &style) { mStyle = style; } void setIsDefault(BOOL b) { mIsDefault = b; } BOOL getIsDefault() const { return mIsDefault; } void setToken( LLKeywordToken* token ) { mToken = token; } LLKeywordToken* getToken() const { return mToken; } BOOL getToolTip( std::string& msg ) const; void dump() const; struct compare { bool operator()(const LLTextSegment* a, const LLTextSegment* b) const { return a->mStart < b->mStart; } }; private: LLStyleSP mStyle; S32 mStart; S32 mEnd; LLKeywordToken* mToken; BOOL mIsDefault; }; #endif // LL_TEXTEDITOR_