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/**
* @file llbutton.cpp
* @brief LLButton base class
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llmenubutton.h"
// Linden library includes
#include "lltoggleablemenu.h"
#include "llstring.h"
#include "v4color.h"
static LLDefaultChildRegistry::Register<LLMenuButton> r("menu_button");
void LLMenuButton::MenuPositions::declareValues()
{
declare("topleft", MP_TOP_LEFT);
declare("topright", MP_TOP_RIGHT);
declare("bottomleft", MP_BOTTOM_LEFT);
declare("bottomright", MP_BOTTOM_RIGHT);
}
LLMenuButton::Params::Params()
: menu_filename("menu_filename"),
position("menu_position", MP_BOTTOM_LEFT)
{
addSynonym(position, "position");
}
LLMenuButton::LLMenuButton(const LLMenuButton::Params& p)
: LLButton(p),
mIsMenuShown(false),
mMenuPosition(p.position),
mOwnMenu(false)
{
std::string menu_filename = p.menu_filename;
setMenu(menu_filename, mMenuPosition);
updateMenuOrigin();
}
LLMenuButton::~LLMenuButton()
{
cleanup();
}
boost::signals2::connection LLMenuButton::setMouseDownCallback( const mouse_signal_t::slot_type& cb )
{
return LLUICtrl::setMouseDownCallback(cb);
}
void LLMenuButton::hideMenu()
{
LLToggleableMenu* menu = getMenu();
if (menu)
{
menu->setVisible(false);
}
}
LLToggleableMenu* LLMenuButton::getMenu()
{
return dynamic_cast<LLToggleableMenu*>(mMenuHandle.get());
}
void LLMenuButton::setMenu(const std::string& menu_filename, EMenuPosition position /*MP_TOP_LEFT*/)
{
if (menu_filename.empty())
{
return;
}
llassert(LLMenuGL::sMenuContainer != NULL);
LLToggleableMenu* menu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>(menu_filename, LLMenuGL::sMenuContainer, LLMenuHolderGL::child_registry_t::instance(), true);
if (!menu)
{
LL_WARNS() << "Error loading menu_button menu" << LL_ENDL;
return;
}
setMenu(menu, position, true);
}
void LLMenuButton::setMenu(LLToggleableMenu* menu, EMenuPosition position /*MP_TOP_LEFT*/, bool take_ownership /*false*/)
{
if (!menu) return;
cleanup(); // destroy the previous memnu if we own it
mMenuHandle = menu->getHandle();
mMenuPosition = position;
mOwnMenu = take_ownership;
menu->setVisibilityChangeCallback(boost::bind(&LLMenuButton::onMenuVisibilityChange, this, _2));
}
bool LLMenuButton::handleKeyHere(KEY key, MASK mask )
{
if (!getMenu()) return false;
if( KEY_RETURN == key && mask == MASK_NONE && !gKeyboard->getKeyRepeated(key))
{
// *HACK: We emit the mouse down signal to fire the callback bound to the
// menu emerging event before actually displaying the menu. See STORM-263.
LLUICtrl::handleMouseDown(-1, -1, MASK_NONE);
toggleMenu();
return true;
}
LLToggleableMenu* menu = getMenu();
if (menu && menu->getVisible() && key == KEY_ESCAPE && mask == MASK_NONE)
{
menu->setVisible(false);
return true;
}
return false;
}
bool LLMenuButton::handleMouseDown(S32 x, S32 y, MASK mask)
{
LLButton::handleMouseDown(x, y, mask);
toggleMenu();
return true;
}
void LLMenuButton::toggleMenu()
{
if (mValidateSignal && !(*mValidateSignal)(this, LLSD()))
{
return;
}
LLToggleableMenu* menu = getMenu();
if (!menu) return;
// Store the button rectangle to toggle menu visibility if a mouse event
// occurred inside or outside the button rect.
menu->setButtonRect(this);
if (!menu->toggleVisibility() && mIsMenuShown)
{
setForcePressedState(false);
mIsMenuShown = false;
}
else
{
menu->buildDrawLabels();
menu->arrangeAndClear();
menu->updateParent(LLMenuGL::sMenuContainer);
updateMenuOrigin();
LLMenuGL::showPopup(getParent(), menu, mX, mY);
setForcePressedState(true);
mIsMenuShown = true;
}
}
void LLMenuButton::updateMenuOrigin()
{
LLToggleableMenu* menu = getMenu();
if (!menu) return;
LLRect rect = getRect();
switch (mMenuPosition)
{
case MP_TOP_LEFT:
{
mX = rect.mLeft;
mY = rect.mTop + menu->getRect().getHeight();
break;
}
case MP_TOP_RIGHT:
{
const LLRect& menu_rect = menu->getRect();
mX = rect.mRight - menu_rect.getWidth();
mY = rect.mTop + menu_rect.getHeight();
break;
}
case MP_BOTTOM_LEFT:
{
mX = rect.mLeft;
mY = rect.mBottom;
break;
}
case MP_BOTTOM_RIGHT:
{
const LLRect& menu_rect = menu->getRect();
mX = rect.mRight - menu_rect.getWidth();
mY = rect.mBottom;
break;
}
}
}
void LLMenuButton::onMenuVisibilityChange(const LLSD& param)
{
bool new_visibility = param["visibility"].asBoolean();
bool is_closed_by_button_click = param["closed_by_button_click"].asBoolean();
// Reset the button "pressed" state only if the menu is shown by this particular
// menu button (not any other control) and is not being closed by a click on the button.
if (!new_visibility && !is_closed_by_button_click && mIsMenuShown)
{
setForcePressedState(false);
mIsMenuShown = false;
}
}
void LLMenuButton::cleanup()
{
if (mMenuHandle.get() && mOwnMenu)
{
mMenuHandle.get()->die();
}
}
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