/indra/newview/llexpandabletextbox.h
C++ Header | 214 lines | 73 code | 43 blank | 98 comment | 0 complexity | fb20d666daf9b79796d9b36068d443f6 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @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();
- /**
- * Shows the "More" link if the text is too high to be completely
- * visible without expanding the text box. Hides that link otherwise.
- */
- void hideOrShowExpandTextAsNeeded();
- 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();
- /**
- * *HACK: Update the inner textbox shape.
- */
- void updateTextShape();
- /**
- * 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