117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
/**
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* @file llchatentry.h
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* @author Paul Guslisty
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* @brief Text editor widget which is used for user input
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*
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* Features:
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* Optional line history so previous entries can be recalled by CTRL UP/DOWN
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* Optional auto-resize behavior on input chat field
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2012, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LLCHATENTRY_H_
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#define LLCHATENTRY_H_
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#include "lltexteditor.h"
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class LLChatEntry : public LLTextEditor
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{
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public:
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struct Params : public LLInitParam::Block<Params, LLTextEditor::Params>
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{
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Optional<bool> has_history,
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is_expandable;
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Optional<int> expand_lines_count;
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Params();
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};
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virtual ~LLChatEntry();
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protected:
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friend class LLUICtrlFactory;
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LLChatEntry(const Params& p);
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/*virtual*/ void beforeValueChange();
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/*virtual*/ void onValueChange(S32 start, S32 end);
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/*virtual*/ bool useLabel() const;
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public:
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virtual void draw();
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virtual void onCommit();
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/*virtual*/ void onFocusReceived();
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/*virtual*/ void onFocusLost();
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void enableSingleLineMode(bool single_line_mode);
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boost::signals2::connection setTextExpandedCallback(const commit_signal_t::slot_type& cb);
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// <FS:Ansariel> Changed to public so we can update history when using modifier keys
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void updateHistory();
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// <FS:Ansariel> Fix linefeed pasting
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/*virtual*/ void paste();
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private:
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/**
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* Implements auto-resize behavior.
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* When user's typing reaches the right edge of the chat field
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* the chat field expands vertically by one line. The bottom of
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* the chat field remains bottom-justified. The chat field does
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* not expand beyond mExpandLinesCount.
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*/
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void expandText();
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/**
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* Implements line history so previous entries can be recalled by CTRL UP/DOWN
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*/
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// <FS:Ansariel> Changed to public so we can update history when using modifier keys
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//void updateHistory();
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bool handleSpecialKey(const KEY key, const MASK mask);
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// Fired when text height expanded to mExpandLinesCount
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commit_signal_t* mTextExpandedSignal;
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// line history support:
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typedef std::vector<std::string> line_history_t;
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line_history_t::iterator mCurrentHistoryLine; // currently browsed history line
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line_history_t mLineHistory; // line history storage
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bool mHasHistory; // flag for enabled/disabled line history
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bool mIsExpandable;
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bool mSingleLineMode;
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S32 mExpandLinesCount;
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S32 mPrevLinesCount;
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S32 mPrevExpandedLineCount;
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// <FS:Ansariel> FIRE-12537: CTRL-UP discards current input
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std::string mCurrentInput;
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};
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#endif /* LLCHATENTRY_H_ */
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