/** * @file llexpandabletextbox.h * @brief LLExpandableTextBox and related class definitions * * $LicenseInfo:firstyear=2004&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLEXPANDABLETEXTBOX_H #define LL_LLEXPANDABLETEXTBOX_H #include "lltexteditor.h" #include "llscrollcontainer.h" /** * LLExpandableTextBox is a text box control that will show "More" link at end of text * if text doesn't fit into text box. After pressing "More" the text box will expand to show * all text. If text is still too big, a scroll bar will appear inside expanded text box. */ class LLExpandableTextBox : public LLUICtrl { protected: /** * Extended text box. "More" link will appear at end of text if * text is too long to fit into text box size. */ class LLTextBoxEx : public LLTextEditor { public: struct Params : public LLInitParam::Block<Params, LLTextEditor::Params> { Params(); }; // adds or removes "More" link as needed /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE); /*virtual*/ void setText(const LLStringExplicit& text, const LLStyle::Params& input_params = LLStyle::Params()); void setTextBase(const std::string& text) { LLTextBase::setText(text); } /** * Returns difference between text box height and text height. * Value is positive if text height is greater than text box height. */ virtual S32 getVerticalTextDelta(); /** * Returns the height of text rect. */ S32 getTextPixelHeight(); /** * Shows "More" link */ void showExpandText(); /** * Hides "More" link */ void hideExpandText(); protected: LLTextBoxEx(const Params& p); friend class LLUICtrlFactory; private: std::string mExpanderLabel; bool mExpanderVisible; }; public: struct Params : public LLInitParam::Block<Params, LLUICtrl::Params> { Optional<LLTextBoxEx::Params> textbox; Optional<LLScrollContainer::Params> scroll; Optional<S32> max_height; Optional<bool> bg_visible, expanded_bg_visible; Optional<LLUIColor> bg_color, expanded_bg_color; Params(); }; /** * Sets text */ virtual void setText(const std::string& str); /** * Returns text */ virtual std::string getText() const { return mText; } /** * Sets text */ /*virtual*/ void setValue(const LLSD& value); /** * Returns text */ /*virtual*/ LLSD getValue() const { return mText; } /** * Collapses text box on focus_lost event */ /*virtual*/ void onFocusLost(); /** * Collapses text box on top_lost event */ /*virtual*/ void onTopLost(); /** * Draws text box, collapses text box if its expanded and its parent's position changed */ /*virtual*/ void draw(); protected: LLExpandableTextBox(const Params& p); friend class LLUICtrlFactory; /** * Expands text box. * A scroll bar will appear if expanded height is greater than max_height */ virtual void expandTextBox(); /** * Collapses text box. */ virtual void collapseTextBox(); /** * Collapses text box if it is expanded and its parent's position changed */ virtual void collapseIfPosChanged(); /** * Updates text box rect to avoid horizontal scroll bar */ virtual void updateTextBoxRect(); /** * User clicked on "More" link - expand text box */ virtual void onExpandClicked(); /** * Saves collapsed text box's states(rect, parent rect...) */ virtual void saveCollapsedState(); /** * Recalculate text delta considering min_height and window rect. */ virtual S32 recalculateTextDelta(S32 text_delta); protected: std::string mText; LLTextBoxEx* mTextBox; LLScrollContainer* mScroll; S32 mMaxHeight; LLRect mCollapsedRect; bool mExpanded; LLRect mParentRect; bool mBGVisible; bool mExpandedBGVisible; LLUIColor mBGColor; LLUIColor mExpandedBGColor; }; #endif //LL_LLEXPANDABLETEXTBOX_H