/** 
 * @file lltoolview.cpp
 * @brief A UI contains for tool palette tools
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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 "llviewerprecompiledheaders.h"

#include "lltoolview.h"

#include "llfontgl.h"
#include "llrect.h"

#include "llagent.h"
#include "llbutton.h"
#include "llpanel.h"
#include "lltool.h"
#include "lltoolmgr.h"
#include "lltextbox.h"
#include "llresmgr.h"


LLToolContainer::LLToolContainer(LLToolView* parent)
:	mParent(parent),
	mButton(NULL),
	mPanel(NULL),
	mTool(NULL)
{ }


LLToolContainer::~LLToolContainer()
{
	// mParent is a pointer to the tool view
	// mButton is owned by the tool view
	// mPanel is owned by the tool view
	delete mTool;
	mTool = NULL;
}


LLToolView::LLToolView(const std::string& name, const LLRect& rect)
:	mButtonCount(0)
{
	LLView::init(LLView::Params().name(name).rect(rect).mouse_opaque(true));
}


LLToolView::~LLToolView()
{
	for_each(mContainList.begin(), mContainList.end(), DeletePointer());
	mContainList.clear();
}

//*TODO:translate?
// void LLToolView::addTool(const std::string& icon_off, const std::string& icon_on, LLPanel* panel, LLTool* tool, LLView* hoverView, const char* label)
// {
// 	llassert(tool);

// 	LLToolContainer* contain = new LLToolContainer(this);

// 	LLRect btn_rect = getButtonRect(mButtonCount);

// 	contain->mButton = new LLButton("ToolBtn",
// 		btn_rect, 
// 		icon_off,
// 		icon_on, 
// 		"",
// 		&LLToolView::onClickToolButton,
// 		contain,
// 		LLFontGL::getFontSansSerif());

// 	contain->mPanel = panel;
// 	contain->mTool = tool;

// 	addChild(contain->mButton);
// 	mButtonCount++;

// 	const S32 LABEL_TOP_SPACING = 0;
// 	const LLFontGL* font = LLResMgr::getInstance()->getRes( LLFONT_SANSSERIF_SMALL );
// 	S32 label_width = font->getWidth( label );
// 	LLRect label_rect;
// 	label_rect.setLeftTopAndSize( 
// 		btn_rect.mLeft + btn_rect.getWidth() / 2 - label_width / 2,
// 		btn_rect.mBottom - LABEL_TOP_SPACING,
// 		label_width, 
// 		llfloor(font->getLineHeight()));
// 	addChild( new LLTextBox( "tool label", label_rect, label, font ) );

// 	// Can optionally ignore panel
// 	if (contain->mPanel)
// 	{
// 		contain->mPanel->setBackgroundVisible( FALSE );
// 		contain->mPanel->setBorderVisible( FALSE );
// 		addChild(contain->mPanel);
// 	}

// 	mContainList.push_back(contain);
// }


LLRect LLToolView::getButtonRect(S32 button_index)
{
	const S32 HPAD = 7;
	const S32 VPAD = 7;
	const S32 TOOL_SIZE = 32;
	const S32 HORIZ_SPACING = TOOL_SIZE + 5;
	const S32 VERT_SPACING = TOOL_SIZE + 14;

	S32 tools_per_row = getRect().getWidth() / HORIZ_SPACING;

	S32 row = button_index / tools_per_row;
	S32 column = button_index % tools_per_row; 

	// Build the rectangle, recalling the origin is at lower left
	// and we want the icons to build down from the top.
	LLRect rect;
	rect.setLeftTopAndSize( HPAD + (column * HORIZ_SPACING),
							-VPAD + getRect().getHeight() - (row * VERT_SPACING),
							TOOL_SIZE,
							TOOL_SIZE
							);

	return rect;
}


void LLToolView::draw()
{
	// turn off highlighting for all containers 
	// and hide all option panels except for the selected one.
	LLTool* selected = LLToolMgr::getInstance()->getCurrentToolset()->getSelectedTool();
	for (contain_list_t::iterator iter = mContainList.begin();
		 iter != mContainList.end(); ++iter)
	{
		LLToolContainer* contain = *iter;
		BOOL state = (contain->mTool == selected);
		contain->mButton->setToggleState( state );
		if (contain->mPanel)
		{
			contain->mPanel->setVisible( state );
		}
	}

	// Draw children normally
	LLView::draw();
}

// protected
LLToolContainer* LLToolView::findToolContainer( LLTool *tool )
{
	// Find the container for this tool
	llassert( tool );
	for (contain_list_t::iterator iter = mContainList.begin();
		 iter != mContainList.end(); ++iter)
	{
		LLToolContainer* contain = *iter;
		if( contain->mTool == tool )
		{
			return contain;
		}
	}
	LL_ERRS() << "LLToolView::findToolContainer - tool not found" << LL_ENDL;
	return NULL;
}

// static
void LLToolView::onClickToolButton(void* userdata)
{
	LLToolContainer* clicked = (LLToolContainer*) userdata;

	// Switch to this one
	LLToolMgr::getInstance()->getCurrentToolset()->selectTool( clicked->mTool );
}



