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