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/**
* @file llsplitbutton.cpp
* @brief LLSplitButton base class
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
// A control that consolidates several buttons as options
#include "llviewerprecompiledheaders.h"
#include "llsplitbutton.h"
#include "llinitparam.h"
#include "llpanel.h"
#include "llfocusmgr.h"
#include "llviewerwindow.h"
#include "llrootview.h"
S32 BUTTON_PAD = 2; //pad between buttons on an items panel
static LLDefaultChildRegistry::Register<LLSplitButton> split_button("split_button");
void LLSplitButton::ArrowPositionValues::declareValues()
{
declare("left", LEFT);
declare("right", RIGHT);
}
LLSplitButton::ItemParams::ItemParams()
{
}
LLSplitButton::Params::Params()
: arrow_position("arrow_position", LEFT),
items("item"),
arrow_button("arrow_button"),
items_panel("items_panel")
{
}
void LLSplitButton::onFocusLost()
{
hideButtons();
LLUICtrl::onFocusLost();
}
void LLSplitButton::setFocus(BOOL b)
{
LLUICtrl::setFocus(b);
if (b)
{
if (mItemsPanel && mItemsPanel->getVisible())
{
mItemsPanel->setFocus(TRUE);
}
}
}
void LLSplitButton::setEnabled(BOOL enabled)
{
LLView::setEnabled(enabled);
mArrowBtn->setEnabled(enabled);
}
void LLSplitButton::onArrowBtnDown()
{
if (!mItemsPanel->getVisible())
{
showButtons();
setFocus(TRUE);
if (mArrowBtn->hasMouseCapture() || mShownItem->hasMouseCapture())
{
gFocusMgr.setMouseCapture(this);
}
}
else
{
hideButtons();
}
}
void LLSplitButton::onHeldDownShownButton()
{
if (!mItemsPanel->getVisible()) onArrowBtnDown();
}
void LLSplitButton::onItemSelected(LLUICtrl* ctrl)
{
if (!ctrl) return;
hideButtons();
// call the callback if it exists
if(!mSelectionCallback.empty())
{
mSelectionCallback(this, ctrl->getName());
}
gFocusMgr.setKeyboardFocus(NULL);
}
BOOL LLSplitButton::handleMouseUp(S32 x, S32 y, MASK mask)
{
gFocusMgr.setMouseCapture(NULL);
if (mShownItem->parentPointInView(x, y))
{
onItemSelected(mShownItem);
return TRUE;
}
for (std::list<LLButton*>::const_iterator it = mHidenItems.begin(); it != mHidenItems.end(); ++it)
{
LLButton* item = *it;
S32 panel_x = 0;
S32 panel_y = 0;
localPointToOtherView(x, y, &panel_x, &panel_y, mItemsPanel);
if (item->parentPointInView(panel_x, panel_y))
{
onItemSelected(item);
return TRUE;
}
}
return TRUE;
}
void LLSplitButton::showButtons()
{
mItemsPanel->setOrigin(0, getRect().getHeight());
// register ourselves as a "top" control
// effectively putting us into a special draw layer
gViewerWindow->addPopup(this);
mItemsPanel->setFocus(TRUE);
//push arrow button down and show the item buttons
mArrowBtn->setToggleState(TRUE);
mItemsPanel->setVisible(TRUE);
setUseBoundingRect(TRUE);
}
void LLSplitButton::hideButtons()
{
mItemsPanel->setVisible(FALSE);
mArrowBtn->setToggleState(FALSE);
setUseBoundingRect(FALSE);
gViewerWindow->removePopup(this);
}
// protected/private
LLSplitButton::LLSplitButton(const LLSplitButton::Params& p)
: LLUICtrl(p),
mArrowBtn(NULL),
mShownItem(NULL),
mItemsPanel(NULL),
mArrowPosition(p.arrow_position)
{
LLRect rc(p.rect);
LLButton::Params arrow_params = p.arrow_button;
S32 arrow_width = p.arrow_button.rect.width;
//Default arrow rect values for LEFT arrow position
S32 arrow_left = 0;
S32 arrow_right = arrow_width;
S32 btn_left = arrow_width;
S32 btn_right = rc.getWidth();
if (mArrowPosition == RIGHT)
{
arrow_left = rc.getWidth()- arrow_width;
arrow_right = rc.getWidth();
btn_left = 0;
btn_right = arrow_left;
}
arrow_params.rect(LLRect(arrow_left, rc.getHeight(), arrow_right, 0));
arrow_params.label("");
arrow_params.mouse_down_callback.function(boost::bind(&LLSplitButton::onArrowBtnDown, this));
mArrowBtn = LLUICtrlFactory::create<LLButton>(arrow_params);
addChild(mArrowBtn);
//a panel for hidden item buttons
LLPanel::Params panel_params = p.items_panel;
mItemsPanel= prepareItemsPanel(panel_params, p.items.numValidElements());
addChild(mItemsPanel);
LLInitParam::ParamIterator<ItemParams>::const_iterator it = p.items.begin();
//processing shown item button
mShownItem = prepareItemButton(*it);
mShownItem->setHeldDownCallback(boost::bind(&LLSplitButton::onHeldDownShownButton, this));
mShownItem->setMouseUpCallback(boost::bind(&LLSplitButton::onItemSelected, this, _1));
mShownItem->setRect(LLRect(btn_left, rc.getHeight(), btn_right, 0));
addChild(mShownItem);
//processing hidden item buttons
S32 item_top = mItemsPanel->getRect().getHeight();
for (++it; it != p.items.end(); ++it)
{
LLButton* hidden_button = prepareItemButton(*it);
hidden_button->setRect(LLRect(btn_left, item_top, btn_right, item_top - rc.getHeight()));
hidden_button->setMouseDownCallback(boost::bind(&LLSplitButton::onItemSelected, this, _1));
mHidenItems.push_back(hidden_button);
mItemsPanel->addChild(hidden_button);
//calculate next button's top
item_top -= (rc.getHeight() + BUTTON_PAD);
}
mTopLostSignalConnection = setTopLostCallback(boost::bind(&LLSplitButton::hideButtons, this));
}
LLSplitButton::~LLSplitButton()
{
// explicitly disconect to avoid hideButtons with
// dead pointers being called on destruction
mTopLostSignalConnection.disconnect();
}
LLButton* LLSplitButton::prepareItemButton(LLButton::Params params)
{
params.label("");
params.is_toggle(false);
return LLUICtrlFactory::create<LLButton>(params);
}
LLPanel* LLSplitButton::prepareItemsPanel(LLPanel::Params params, S32 items_count)
{
S32 num_hiden_btns = items_count - 1;
S32 panel_height = num_hiden_btns * (getRect().getHeight() + BUTTON_PAD);
params.visible(false);
params.rect.width(getRect().getWidth());
params.rect.height(panel_height);
return LLUICtrlFactory::create<LLPanel>(params);
}
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