/**
 * @file llpanelmediasettingsgeneral.cpp
 * @brief LLPanelMediaSettingsGeneral class implementation
 *
 * $LicenseInfo:firstyear=2009&license=viewergpl$
 * 
 * Copyright (c) 2009, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llpanelmediasettingsgeneral.h"

// library includes
#include "llcombobox.h"
#include "llcheckboxctrl.h"
#include "llnotificationsutil.h"
#include "llspinctrl.h"
#include "lluictrlfactory.h"

// project includes
#include "llagent.h"
#include "llviewerwindow.h"
#include "llviewermedia.h"
#include "llsdutil.h"
#include "llselectmgr.h"
#include "llbutton.h"
#include "lltexturectrl.h"
#include "llurl.h"
#include "llwindow.h"
#include "llmediaentry.h"
#include "llmediactrl.h"
#include "llpanelcontents.h"
#include "llpermissions.h"
#include "llpluginclassmedia.h"
#include "llfloatermediasettings.h"
#include "llfloatertools.h"
#include "lltrans.h"

const char *CHECKERBOARD_DATA_URL = "data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 width=%22100%%22 height=%22100%%22 %3E%3Cdefs%3E%3Cpattern id=%22checker%22 patternUnits=%22userSpaceOnUse%22 x=%220%22 y=%220%22 width=%22128%22 height=%22128%22 viewBox=%220 0 128 128%22 %3E%3Crect x=%220%22 y=%220%22 width=%2264%22 height=%2264%22 fill=%22#ddddff%22 /%3E%3Crect x=%2264%22 y=%2264%22 width=%2264%22 height=%2264%22 fill=%22#ddddff%22 /%3E%3C/pattern%3E%3C/defs%3E%3Crect x=%220%22 y=%220%22 width=%22100%%22 height=%22100%%22 fill=%22url(#checker)%22 /%3E%3C/svg%3E";

////////////////////////////////////////////////////////////////////////////////
//
LLPanelMediaSettingsGeneral::LLPanelMediaSettingsGeneral() :
	mControls( NULL ),
	mAutoLoop( NULL ),
	mFirstClick( NULL ),
	mAutoZoom( NULL ),
	mAutoPlay( NULL ),
	mAutoScale( NULL ),
	mWidthPixels( NULL ),
	mHeightPixels( NULL ),
	mHomeURL( NULL ),
	mCurrentURL( NULL ),
	mParent( NULL ),
	mMediaEditable(false)
{
	// build dialog from XML
	LLUICtrlFactory::getInstance()->buildPanel(this, "panel_media_settings_general.xml");
}

////////////////////////////////////////////////////////////////////////////////
//
BOOL LLPanelMediaSettingsGeneral::postBuild()
{
	// connect member vars with UI widgets
	mAutoLoop = getChild< LLCheckBoxCtrl >( LLMediaEntry::AUTO_LOOP_KEY );
	mAutoPlay = getChild< LLCheckBoxCtrl >( LLMediaEntry::AUTO_PLAY_KEY );
	mAutoScale = getChild< LLCheckBoxCtrl >( LLMediaEntry::AUTO_SCALE_KEY );
	mAutoZoom = getChild< LLCheckBoxCtrl >( LLMediaEntry::AUTO_ZOOM_KEY );
	mControls = getChild< LLComboBox >( LLMediaEntry::CONTROLS_KEY );
	mCurrentURL = getChild< LLLineEditor >( LLMediaEntry::CURRENT_URL_KEY );
	mFirstClick = getChild< LLCheckBoxCtrl >( LLMediaEntry::FIRST_CLICK_INTERACT_KEY );
	mHeightPixels = getChild< LLSpinCtrl >( LLMediaEntry::HEIGHT_PIXELS_KEY );
	mHomeURL = getChild< LLLineEditor >( LLMediaEntry::HOME_URL_KEY );
	mWidthPixels = getChild< LLSpinCtrl >( LLMediaEntry::WIDTH_PIXELS_KEY );
	mPreviewMedia = getChild<LLMediaCtrl>("preview_media");

	// watch commit action for HOME URL
	childSetCommitCallback( LLMediaEntry::HOME_URL_KEY, onCommitHomeURL, this);
	childSetCommitCallback( "current_url_reset_btn",onBtnResetCurrentUrl, this);
	// interrogates controls and updates widgets as required
	updateMediaPreview();

	return true;
}

////////////////////////////////////////////////////////////////////////////////
// virtual
LLPanelMediaSettingsGeneral::~LLPanelMediaSettingsGeneral()
{
}

////////////////////////////////////////////////////////////////////////////////
// static
void LLPanelMediaSettingsGeneral::draw()
{
	// housekeeping
	LLPanel::draw();

	// enable/disable pixel values image entry based on auto scale checkbox 
	if ( mAutoScale->getValue().asBoolean() == false )
	{
		childSetEnabled( LLMediaEntry::WIDTH_PIXELS_KEY, true );
		childSetEnabled( LLMediaEntry::HEIGHT_PIXELS_KEY, true );
	}
	else
	{
		childSetEnabled( LLMediaEntry::WIDTH_PIXELS_KEY, false );
		childSetEnabled( LLMediaEntry::HEIGHT_PIXELS_KEY, false );
	};

	// enable/disable UI based on type of media
	bool reset_button_is_active = true;
	if( mPreviewMedia )
	{
		LLPluginClassMedia* media_plugin = mPreviewMedia->getMediaPlugin();
		if( media_plugin )
		{
			// turn off volume (if we can) for preview. Note: this really only
			// works for QuickTime movies right now - no way to control the 
			// volume of a flash app embedded in a page for example
			media_plugin->setVolume( 0 );

			// some controls are only appropriate for time or browser type plugins
			// so we selectively enable/disable them - need to do it in draw
			// because the information from plugins arrives assynchronously
			bool show_time_controls = media_plugin->pluginSupportsMediaTime();
			if ( show_time_controls )
			{
				childSetEnabled( LLMediaEntry::CURRENT_URL_KEY, false );
				reset_button_is_active = false;
				childSetEnabled( "current_url_label", false );
				childSetEnabled( LLMediaEntry::AUTO_LOOP_KEY, true );
			}
			else
			{
				childSetEnabled( LLMediaEntry::CURRENT_URL_KEY, true );
				reset_button_is_active = true;
				childSetEnabled( "current_url_label", true );
				childSetEnabled( LLMediaEntry::AUTO_LOOP_KEY, false );
			};
		};
	};

	// current URL can change over time, update it here
	updateCurrentUrl();
	
	LLPermissions perm;
	bool user_can_press_reset = mMediaEditable;

	// several places modify this widget so we must collect states in one place
	if ( reset_button_is_active )
	{
		// user has perms to press reset button and it is active
		if ( user_can_press_reset )
		{
			childSetEnabled( "current_url_reset_btn", true );
		}
		// user does not has perms to press reset button and it is active
		else
		{
			childSetEnabled( "current_url_reset_btn", false );
		};
	}
	else
	// reset button is inactive so we just slam it to off - other states don't matter
	{
		childSetEnabled( "current_url_reset_btn", false );
	};
}

////////////////////////////////////////////////////////////////////////////////
// static 
void LLPanelMediaSettingsGeneral::clearValues( void* userdata, bool editable)
{	
	LLPanelMediaSettingsGeneral *self =(LLPanelMediaSettingsGeneral *)userdata;
	self->mAutoLoop->clear();
	self->mAutoPlay->clear();
	self->mAutoScale->clear();
	self->mAutoZoom ->clear();
	self->mControls->clear();
	self->mCurrentURL->clear();
	self->mFirstClick->clear();
	self->mHeightPixels->clear();
	self->mHomeURL->clear();
	self->mWidthPixels->clear();
	self->mAutoLoop ->setEnabled(editable);
	self->mAutoPlay ->setEnabled(editable);
	self->mAutoScale ->setEnabled(editable);
	self->mAutoZoom  ->setEnabled(editable);
	self->mControls ->setEnabled(editable);
	self->mCurrentURL ->setEnabled(editable);
	self->mFirstClick ->setEnabled(editable);
	self->mHeightPixels ->setEnabled(editable);
	self->mHomeURL ->setEnabled(editable);
	self->mWidthPixels ->setEnabled(editable);
	self->updateMediaPreview();
}

// static
bool LLPanelMediaSettingsGeneral::isMultiple()
{
	// IF all the faces have media (or all dont have media)
	if ( LLFloaterMediaSettings::getInstance()->mIdenticalHasMediaInfo )
	{
		if(LLFloaterMediaSettings::getInstance()->mMultipleMedia) 
		{
			return true;
		}
		
	}
	else
	{
		if(LLFloaterMediaSettings::getInstance()->mMultipleValidMedia) 
		{
			return true;
		}
	}
	return false;
}	

////////////////////////////////////////////////////////////////////////////////
// static 
void LLPanelMediaSettingsGeneral::initValues( void* userdata, const LLSD& media_settings ,bool editable)
{
	LLPanelMediaSettingsGeneral *self =(LLPanelMediaSettingsGeneral *)userdata;
	self->mMediaEditable = editable;

	//llinfos << "---------------" << llendl;
	//llinfos << ll_pretty_print_sd(media_settings) << llendl;
	//llinfos << "---------------" << llendl;

	if ( LLPanelMediaSettingsGeneral::isMultiple() )
	{
		self->clearValues(self, self->mMediaEditable);
		// only show multiple 
		self->mHomeURL->setText(LLTrans::getString("Multiple Media"));
		self->mCurrentURL->setText(LLTrans::getString("Multiple Media"));
		return;
	}
	
	std::string base_key( "" );
	std::string tentative_key( "" );

	struct 
	{
		std::string key_name;
		LLUICtrl* ctrl_ptr;
		std::string ctrl_type;

	} data_set [] = 
	{ 
        { LLMediaEntry::AUTO_LOOP_KEY,				self->mAutoLoop,		"LLCheckBoxCtrl" },
		{ LLMediaEntry::AUTO_PLAY_KEY,				self->mAutoPlay,		"LLCheckBoxCtrl" },
		{ LLMediaEntry::AUTO_SCALE_KEY,				self->mAutoScale,		"LLCheckBoxCtrl" },
		{ LLMediaEntry::AUTO_ZOOM_KEY,				self->mAutoZoom,		"LLCheckBoxCtrl" },
		{ LLMediaEntry::CONTROLS_KEY,				self->mControls,		"LLComboBox" },
		{ LLMediaEntry::CURRENT_URL_KEY,			self->mCurrentURL,		"LLLineEditor" },
		{ LLMediaEntry::HEIGHT_PIXELS_KEY,			self->mHeightPixels,	"LLSpinCtrl" },
		{ LLMediaEntry::HOME_URL_KEY,				self->mHomeURL,			"LLLineEditor" },
		{ LLMediaEntry::FIRST_CLICK_INTERACT_KEY,	self->mFirstClick,		"LLCheckBoxCtrl" },
		{ LLMediaEntry::WIDTH_PIXELS_KEY,			self->mWidthPixels,		"LLSpinCtrl" },
		{ "", NULL , "" }
	};

	for( int i = 0; data_set[ i ].key_name.length() > 0; ++i )
	{
		base_key = std::string( data_set[ i ].key_name );
		tentative_key = base_key + std::string( LLPanelContents::TENTATIVE_SUFFIX );
		// TODO: CP - I bet there is a better way to do this using Boost
		if ( media_settings[ base_key ].isDefined() )
		{
			if ( data_set[ i ].ctrl_type == "LLLineEditor" )
			{
				static_cast< LLLineEditor* >( data_set[ i ].ctrl_ptr )->
					setText( media_settings[ base_key ].asString() );
			}
			else
			if ( data_set[ i ].ctrl_type == "LLCheckBoxCtrl" )
				static_cast< LLCheckBoxCtrl* >( data_set[ i ].ctrl_ptr )->
					setValue( media_settings[ base_key ].asBoolean() );
			else
			if ( data_set[ i ].ctrl_type == "LLComboBox" )
				static_cast< LLComboBox* >( data_set[ i ].ctrl_ptr )->
					setCurrentByIndex( media_settings[ base_key ].asInteger() );
			else
			if ( data_set[ i ].ctrl_type == "LLSpinCtrl" )
				static_cast< LLSpinCtrl* >( data_set[ i ].ctrl_ptr )->
					setValue( media_settings[ base_key ].asInteger() );

			data_set[ i ].ctrl_ptr->setEnabled(self->mMediaEditable);
			data_set[ i ].ctrl_ptr->setTentative( media_settings[ tentative_key ].asBoolean() );
		};
	};
	
	// interrogates controls and updates widgets as required
	self->updateMediaPreview();
}

////////////////////////////////////////////////////////////////////////////////
// Helper to set media control to media URL as required
void LLPanelMediaSettingsGeneral::updateMediaPreview()
{
	if ( mHomeURL->getValue().asString().length() > 0 )
	{
		if(mPreviewMedia->getCurrentNavUrl() != mHomeURL->getValue().asString())
		{
			mPreviewMedia->navigateTo( mHomeURL->getValue().asString() );
		}
	}
	else
	// new home URL will be empty if media is deleted so display a 
	// "preview goes here" data url page
	{
		if(mPreviewMedia->getCurrentNavUrl() != CHECKERBOARD_DATA_URL)
		{
			mPreviewMedia->navigateTo( CHECKERBOARD_DATA_URL );
		}
	};
}

////////////////////////////////////////////////////////////////////////////////

// virtual
void LLPanelMediaSettingsGeneral::onClose(bool app_quitting)
{
	if(mPreviewMedia)
	{
		mPreviewMedia->unloadMediaSource();
	}
}

////////////////////////////////////////////////////////////////////////////////
// static
void LLPanelMediaSettingsGeneral::onCommitHomeURL( LLUICtrl* ctrl, void *userdata )
{
	LLPanelMediaSettingsGeneral* self =(LLPanelMediaSettingsGeneral *)userdata;

	// check url user is trying to enter for home URL will pass whitelist 
	// and decline to accept it if it doesn't.
	std::string home_url = self->mHomeURL->getValue().asString();
	if ( ! self->mParent->passesWhiteList( home_url ) )
	{
		LLNotificationsUtil::add("WhiteListInvalidatesHomeUrl");		
		return;
	};
	
	self->updateMediaPreview();
}

////////////////////////////////////////////////////////////////////////////////
// static
void LLPanelMediaSettingsGeneral::onBtnResetCurrentUrl(LLUICtrl* ctrl, void *userdata)
{
	LLPanelMediaSettingsGeneral* self =(LLPanelMediaSettingsGeneral *)userdata;
	self->navigateHomeSelectedFace(false);
}

////////////////////////////////////////////////////////////////////////////////
// 
void LLPanelMediaSettingsGeneral::preApply()
{
	// Make sure the home URL entry is committed
	mHomeURL->onCommit();
}

////////////////////////////////////////////////////////////////////////////////
//
void LLPanelMediaSettingsGeneral::getValues( LLSD &fill_me_in )
{
    fill_me_in[LLMediaEntry::AUTO_LOOP_KEY] = mAutoLoop->getValue();
    fill_me_in[LLMediaEntry::AUTO_PLAY_KEY] = mAutoPlay->getValue();
    fill_me_in[LLMediaEntry::AUTO_SCALE_KEY] = mAutoScale->getValue();
    fill_me_in[LLMediaEntry::AUTO_ZOOM_KEY] = mAutoZoom->getValue();
    fill_me_in[LLMediaEntry::CONTROLS_KEY] = mControls->getCurrentIndex();
    //Don't fill in current URL: this is only supposed to get changed via navigate
	// fill_me_in[LLMediaEntry::CURRENT_URL_KEY] = mCurrentURL->getValue();
    fill_me_in[LLMediaEntry::HEIGHT_PIXELS_KEY] = mHeightPixels->getValue();
    fill_me_in[LLMediaEntry::HOME_URL_KEY] = mHomeURL->getValue();
    fill_me_in[LLMediaEntry::FIRST_CLICK_INTERACT_KEY] = mFirstClick->getValue();
    fill_me_in[LLMediaEntry::WIDTH_PIXELS_KEY] = mWidthPixels->getValue();
}

////////////////////////////////////////////////////////////////////////////////
// 
void LLPanelMediaSettingsGeneral::postApply()
{	
	// Make sure to navigate to the home URL if the current URL is empty and 
	// autoplay is on
	navigateHomeSelectedFace(true);
}


////////////////////////////////////////////////////////////////////////////////
//
void LLPanelMediaSettingsGeneral::setParent( LLFloaterMediaSettings* parent )
{
	mParent = parent;
};

////////////////////////////////////////////////////////////////////////////////
//
bool LLPanelMediaSettingsGeneral::navigateHomeSelectedFace(bool only_if_current_is_empty)
{
	struct functor_navigate_media : public LLSelectedTEGetFunctor< bool>
	{
		functor_navigate_media(bool flag) : only_if_current_is_empty(flag) {}
		bool get( LLViewerObject* object, S32 face )
		{
			if ( object && object->getTE(face) && object->permModify() )
			{
				const LLMediaEntry *media_data = object->getTE(face)->getMediaData();
				if ( media_data )
				{	
					if (!only_if_current_is_empty || (media_data->getCurrentURL().empty() && media_data->getAutoPlay()))
					{
						viewer_media_t media_impl =
							LLViewerMedia::getMediaImplFromTextureID(object->getTE(face)->getMediaData()->getMediaID());
						if(media_impl)
						{
							media_impl->navigateHome();
							return true;
						}
					}
				}
			}
			return false;
		};
		bool only_if_current_is_empty;
				
	} functor_navigate_media(only_if_current_is_empty);
	
	bool all_face_media_navigated = false;
	LLObjectSelectionHandle selected_objects =LLSelectMgr::getInstance()->getSelection();
	selected_objects->getSelectedTEValue( &functor_navigate_media, all_face_media_navigated );
	
	// Note: we don't update the 'current URL' field until the media data itself changes
	
	return all_face_media_navigated;
}

////////////////////////////////////////////////////////////////////////////////
//
const std::string LLPanelMediaSettingsGeneral::getHomeUrl()
{
	return mHomeURL->getValue().asString(); 
}

////////////////////////////////////////////////////////////////////////////////
//
void LLPanelMediaSettingsGeneral::updateCurrentUrl()
{
	// Get the current URL from the selection
	
	const LLMediaEntry default_media_data;
	std::string value_str = default_media_data.getCurrentURL();
	struct functor_getter_current_url : public LLSelectedTEGetFunctor< std::string >
	{
		functor_getter_current_url(const LLMediaEntry& entry): mMediaEntry(entry) {}
		
		std::string get( LLViewerObject* object, S32 face )
		{
			if ( object )
				if ( object->getTE(face) )
					if ( object->getTE(face)->getMediaData() )
						return object->getTE(face)->getMediaData()->getCurrentURL();
			return mMediaEntry.getCurrentURL();
		};
		
		const LLMediaEntry &  mMediaEntry;
		
	} func_current_url(default_media_data);
	bool identical = LLSelectMgr::getInstance()->getSelection()->getSelectedTEValue( &func_current_url, value_str );
	mCurrentURL->setText(value_str);
	mCurrentURL->setTentative(identical);
}