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path: root/plugins/UserInfoEx/src/svc_homepage.cpp
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/*
UserinfoEx plugin for Miranda IM

Copyright:
� 2006-2010 DeathAxe, Yasnovidyashii, Merlin, K. Romanov, Kreol

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#include "stdafx.h"

static HGENMENU ghMenuItem = nullptr;
static HANDLE ghExtraIconDef = INVALID_HANDLE_VALUE;
static HANDLE ghExtraIconSvc = INVALID_HANDLE_VALUE;

static HANDLE hChangedHook = nullptr;
static HANDLE hApplyIconHook = nullptr;

bool g_eiHome = false;

/**
* This function reads the homepage address of the contact.
*
* @param	hContact	- handle to contact to read email from
*
* @retval	URL to contacts homepage
* @retval	NULL if contact provides no homepage
**/

static LPSTR Get(MCONTACT hContact)
{
	// ignore owner
	if (hContact != NULL) {
		LPCSTR pszProto = Proto_GetBaseAccountName(hContact);
		if (pszProto != nullptr) {
			LPCSTR e[2] = { SET_CONTACT_HOMEPAGE, SET_CONTACT_COMPANY_HOMEPAGE };
			for (int i = 0; i < 2; i++) {
				LPSTR pszHomepage = DB::Setting::GetAStringEx(hContact, USERINFO, pszProto, e[i]);
				if (pszHomepage)
					return pszHomepage;
			}
		}
	}
	return nullptr;
}

/**
* Service function that opens the default browser and displays the homepage.
*
* @param	wParam		- handle to contact to send an email to
* @param	lParam		- not used
*
* @retval	0 if email was sent
* @retval	1 if no email can be sent
**/

static INT_PTR MenuCommand(WPARAM wParam, LPARAM lParam)
{
	LPSTR szUrl = Get(wParam);
	if (szUrl) {
		Utils_OpenUrl(szUrl);
		mir_free(szUrl);
	}
	else MessageBox((HWND)lParam, TranslateT("User has no valid homepage"), TranslateT("View Homepage"), MB_OK);

	return 0;
}

/***********************************************************************************************************
 * Event Handler functions
 ***********************************************************************************************************/

/**
* Notification handler for clist extra icons to be applied for a contact.
*
* @param	wParam		- handle to the contact whose extra icon is to apply
* @param	lParam		- not used
**/

static int OnCListApplyIcons(MCONTACT hContact, LPARAM)
{
	LPSTR val = Get(hContact);
	if (ghExtraIconSvc != INVALID_HANDLE_VALUE)
		ExtraIcon_SetIconByName(ghExtraIconSvc, hContact, (val) ? ICO_BTN_GOTO : nullptr);
	MIR_FREE(val);
	return 0;
}

/**
* Notification handler for changed contact settings
*
* @param	wParam		- (HANDLE)hContact
* @param	lParam		- (DBCONTACTWRITESETTING*)pdbcws
**/

static int OnContactSettingChanged(MCONTACT hContact, DBCONTACTWRITESETTING* pdbcws)
{
	if (hContact && pdbcws && pdbcws->szSetting && 
			((pdbcws->value.type & DBVTF_VARIABLELENGTH) || (pdbcws->value.type == DBVT_DELETED)) &&
			(!strncmp(pdbcws->szSetting, SET_CONTACT_HOMEPAGE, 8) ||
			 !strncmp(pdbcws->szSetting, SET_CONTACT_COMPANY_HOMEPAGE, 15)))
		OnCListApplyIcons(hContact, 0);

	return 0;
}

/**
* This function decides whether to show menuitem for sending emails or not.
*
* @param	wParam		- handle to contact to send an email to
* @param	lParam		- not used
*
* @return	always 0
**/

static int OnPreBuildMenu(WPARAM wParam, LPARAM)
{
	LPSTR val = Get(wParam);
	Menu_ShowItem(ghMenuItem, val != nullptr);
	mir_free(val);
	return 0;
}

/***********************************************************************************************************
 * public Module Interface functions
 ***********************************************************************************************************/

/**
* enable or disable menuitem
*
* @param	not used
* @return	nothing
**/

void SvcHomepageRebuildMenu()
{
	static HANDLE hPrebuildMenuHook = nullptr;

	if (!hPrebuildMenuHook)
		hPrebuildMenuHook = HookEvent(ME_CLIST_PREBUILDCONTACTMENU, OnPreBuildMenu);

	if (!ghMenuItem) {
		// insert contact menuitem
		CMenuItem mi;
		SET_UID(mi, 0xdb78c16e, 0x50db, 0x4a40, 0x80, 0x0, 0xd1, 0xa4, 0x1c, 0x1b, 0xa3, 0x2d);
		mi.position = -2000010000;
		mi.hIcolibItem = IcoLib_GetIcon(ICO_BTN_GOTO);
		mi.name.a = LPGEN("&Homepage");
		mi.pszService = MS_USERINFO_HOMEPAGE_OPENURL;
		ghMenuItem = Menu_AddContactMenuItem(&mi);
	}
}

/**
* Enable or disable the replacement of clist extra icons.
*
* @param	bEnable		- determines whether icons are enabled or not
* @param	bUpdateDB	- if true the database setting is updated, too.
**/

bool SvcHomepageEnableExtraIcons(bool bEnable, bool bUpdateDB)
{
	bool bChanged;

	if (bUpdateDB) {
		bChanged = g_eiHome != bEnable;
		db_set_b(NULL, MODNAME, SET_CLIST_EXTRAICON_HOMEPAGE, g_eiHome = bEnable);
	}
	else bChanged = g_eiHome = db_get_b(NULL, MODNAME, SET_CLIST_EXTRAICON_HOMEPAGE, DEFVAL_CLIST_EXTRAICON_HOMEPAGE) != 0;

	if (g_eiHome) {
		// hook events
		if (hChangedHook == nullptr) 
			hChangedHook = HookEvent(ME_DB_CONTACT_SETTINGCHANGED, (MIRANDAHOOK)OnContactSettingChanged);

		if (hApplyIconHook == nullptr) 
			hApplyIconHook = HookEvent(ME_CLIST_EXTRA_IMAGE_APPLY, (MIRANDAHOOK)OnCListApplyIcons);

		if (ghExtraIconSvc == INVALID_HANDLE_VALUE)
			ghExtraIconSvc = ExtraIcon_RegisterIcolib("homepage", LPGEN("Homepage (UInfoEx)"), ICO_BTN_GOTO);
	}
	else {
		if (hChangedHook) {
			UnhookEvent(hChangedHook); 
			hChangedHook = nullptr;
		}			
		if (hApplyIconHook) {
			UnhookEvent(hApplyIconHook); 
			hApplyIconHook = nullptr;
		}			
	}
	return bChanged;
}

/**
* This function initially loads the module upon startup.
*
* @param	not used
* @return	nothing
**/

void SvcHomepageLoadModule()
{
	CreateServiceFunction(MS_USERINFO_HOMEPAGE_OPENURL, MenuCommand);
}

/**
* This function unloads the Email module.
*
* @param	none
*
* @return	nothing
**/

void SvcHomepageUnloadModule()
{	
	// unhook event handlers
	UnhookEvent(hChangedHook); hChangedHook = nullptr;
	UnhookEvent(hApplyIconHook); hApplyIconHook = nullptr;
}