/** 
 * @file llsearcheditor.cpp
 * @brief LLSearchEditor implementation
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

// Text editor widget to let users enter a single line.

#include "linden_common.h"
 
#include "llsearcheditor.h"
#include "llkeyboard.h"

LLSearchEditor::LLSearchEditor(const LLSearchEditor::Params& p)
:	LLUICtrl(p),
	mSearchButton(NULL),
	mClearButton(NULL),
	mEditorImage(p.background_image),
	mEditorImageFocused(p.background_image_focused),
	mEditorSearchImage(p.background_image_highlight),
	mHighlightTextField(p.highlight_text_field)
{
	S32 srch_btn_top = p.search_button.top_pad + p.search_button.rect.height;
	S32 srch_btn_right = p.search_button.rect.width + p.search_button.left_pad;
	LLRect srch_btn_rect(p.search_button.left_pad, srch_btn_top, srch_btn_right, p.search_button.top_pad);

	S32 clr_btn_top = p.clear_button.rect.bottom + p.clear_button.rect.height;
	S32 clr_btn_right = getRect().getWidth() - p.clear_button.pad_right;
	S32 clr_btn_left = clr_btn_right - p.clear_button.rect.width;
	LLRect clear_btn_rect(clr_btn_left, clr_btn_top, clr_btn_right, p.clear_button.rect.bottom);

	S32 text_pad_left = p.text_pad_left;
	S32 text_pad_right = p.text_pad_right;

	if (p.search_button_visible)
		text_pad_left += srch_btn_rect.getWidth();

	if (p.clear_button_visible)
		text_pad_right = getRect().getWidth() - clr_btn_left + p.clear_button.pad_left;

	// Set up line editor.
	LLLineEditor::Params line_editor_params(p);
	line_editor_params.name("filter edit box");
	line_editor_params.background_image(p.background_image);
	line_editor_params.background_image_focused(p.background_image_focused);
	line_editor_params.rect(getLocalRect());
	line_editor_params.follows.flags(FOLLOWS_ALL);
	line_editor_params.text_pad_left(text_pad_left);
	line_editor_params.text_pad_right(text_pad_right);
	line_editor_params.revert_on_esc(false);
	line_editor_params.commit_callback.function(boost::bind(&LLUICtrl::onCommit, this));
	line_editor_params.keystroke_callback(boost::bind(&LLSearchEditor::handleKeystroke, this));

	mSearchEditor = LLUICtrlFactory::create<LLLineEditor>(line_editor_params);
	mSearchEditor->setPassDelete(TRUE);
	addChild(mSearchEditor);

	if (p.search_button_visible)
	{
		// Set up search button.
		LLButton::Params srch_btn_params(p.search_button);
		srch_btn_params.name(std::string("search button"));
		srch_btn_params.rect(srch_btn_rect) ;
		srch_btn_params.follows.flags(FOLLOWS_LEFT|FOLLOWS_TOP);
		srch_btn_params.tab_stop(false);
		srch_btn_params.click_callback.function(boost::bind(&LLUICtrl::onCommit, this));
	
		mSearchButton = LLUICtrlFactory::create<LLButton>(srch_btn_params);
		mSearchEditor->addChild(mSearchButton);
	}

	if (p.clear_button_visible)
	{
		// Set up clear button.
		LLButton::Params clr_btn_params(p.clear_button);
		clr_btn_params.name(std::string("clear button"));
		clr_btn_params.rect(clear_btn_rect) ;
		clr_btn_params.follows.flags(FOLLOWS_RIGHT|FOLLOWS_TOP);
		clr_btn_params.tab_stop(false);
		clr_btn_params.click_callback.function(boost::bind(&LLSearchEditor::onClearButtonClick, this, _2));

		mClearButton = LLUICtrlFactory::create<LLButton>(clr_btn_params);
		mSearchEditor->addChild(mClearButton);
	}
}

//virtual
void LLSearchEditor::draw()
{
	if (mClearButton)
		mClearButton->setVisible(!mSearchEditor->getWText().empty());

	if (mHighlightTextField)
	{	
		if (!mSearchEditor->getWText().empty())
		{
			mSearchEditor->setBgImage(mEditorSearchImage);
			mSearchEditor->setBgImageFocused(mEditorSearchImage);
		}
		else
		{
			mSearchEditor->setBgImage(mEditorImage);
			mSearchEditor->setBgImageFocused(mEditorImageFocused);
		}
	}

	LLUICtrl::draw();
}

//virtual
void LLSearchEditor::setValue(const LLSD& value )
{
	mSearchEditor->setValue(value);
}

//virtual
LLSD LLSearchEditor::getValue() const
{
	return mSearchEditor->getValue();
}

//virtual
BOOL LLSearchEditor::setTextArg( const std::string& key, const LLStringExplicit& text )
{
	return mSearchEditor->setTextArg(key, text);
}

//virtual
BOOL LLSearchEditor::setLabelArg( const std::string& key, const LLStringExplicit& text )
{
	return mSearchEditor->setLabelArg(key, text);
}

//virtual
void LLSearchEditor::setLabel( const LLStringExplicit &new_label )
{
	mSearchEditor->setLabel(new_label);
}

//virtual
void LLSearchEditor::clear()
{
	if (mSearchEditor)
	{
		mSearchEditor->clear();
	}
}

//virtual
void LLSearchEditor::setFocus( BOOL b )
{
	if (mSearchEditor)
	{
		mSearchEditor->setFocus(b);
	}
}

void LLSearchEditor::onClearButtonClick(const LLSD& data)
{
	setText(LLStringUtil::null);
	if (mTextChangedCallback)
	{
		mTextChangedCallback(this, getValue());
	}
	mSearchEditor->onCommit(); // force keystroke callback
}

void LLSearchEditor::handleKeystroke()
{
	if (mKeystrokeCallback)
	{
		mKeystrokeCallback(this, getValue());
	}

	KEY key = gKeyboard->currentKey();
	if (key == KEY_LEFT ||
		key == KEY_RIGHT)
	{
			return;
	}

	if (mTextChangedCallback)
	{
		mTextChangedCallback(this, getValue());
	}
}