/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

#include "StdAfx.h"
#include "TaskList.h"
#include "Win32GUI.h"
#include <Windows.h>
#include <CommCtrl.h>
#include <Richedit.h>
#include <cstdlib>

TaskList::TaskList()
    :   m_edit(0)
{
}

void TaskList::AddTask(const std::string& id, const std::string description)
{
    int taskIndex = int(m_tasks.size());
    m_tasks.push_back(std::make_pair(id, description));
    m_idTaskMap.insert(std::make_pair(id, taskIndex));
}

void TaskList::SetCurrentTask(const std::string& id)
{
    SetText(id);
}

void TaskList::SetColor()
{
    SendMessage((HWND)m_edit, EM_SETBKGNDCOLOR, 0, GetSysColor(COLOR_3DFACE));
}

void TaskList::SetText(const std::string& highlightedTask)
{
    PARAFORMAT2 paragraphFormat;
    std::memset(&paragraphFormat, 0, sizeof(paragraphFormat));
    paragraphFormat.cbSize = sizeof(paragraphFormat);
    paragraphFormat.dwMask = PFM_LINESPACING | PFM_SPACEBEFORE;
    paragraphFormat.bLineSpacingRule = 5; // Specify spacing in 20ths of a line.
    paragraphFormat.dyLineSpacing = 22;
    paragraphFormat.dySpaceBefore = 70;
    SendMessage((HWND)m_edit, EM_SETPARAFORMAT, 0, (LPARAM)&paragraphFormat);

    CHARFORMAT format;
    std::memset(&format, 0, sizeof(format));
    format.cbSize = sizeof(format);
    format.dwMask = CFM_BOLD;
    format.dwEffects = 0;
    SendMessage((HWND)m_edit, EM_SETCHARFORMAT, 0, (LPARAM)&format);

    SETTEXTEX textEx;
    std::memset(&textEx, 0, sizeof(textEx));
    textEx.flags = ST_DEFAULT;
    textEx.codepage = CP_ACP;
    SendMessage((HWND)m_edit, EM_SETTEXTEX, (WPARAM)&textEx, (LPARAM)_T(""));
    int highlightedLineStart = 0;
    int highlightedLineEnd = 0;

    for (std::vector<std::pair<std::string, std::string> >::const_iterator taskPos = m_tasks.begin(), taskEnd = m_tasks.end(); taskPos != taskEnd; ++taskPos)
    {
        textEx.flags = ST_SELECTION;
        const std::string& id = (*taskPos).first;
        const std::string& description = (*taskPos).second;
        const char* margin = "   ";
        if (highlightedTask == id)
        {
            margin = "* ";
            CHARRANGE range;
            SendMessage((HWND)m_edit, EM_EXGETSEL, 0, (LPARAM)&range);
            highlightedLineStart = range.cpMin;
        }
        SendMessageA((HWND)m_edit, EM_SETTEXTEX, (WPARAM)&textEx, (LPARAM)margin);
        SendMessageA((HWND)m_edit, EM_SETTEXTEX, (WPARAM)&textEx, (LPARAM)description.c_str());
        SendMessageA((HWND)m_edit, EM_SETTEXTEX, (WPARAM)&textEx, (LPARAM)"\n");
        if (highlightedTask == id)
        {
            CHARRANGE range;
            SendMessage((HWND)m_edit, EM_EXGETSEL, 0, (LPARAM)&range);
            highlightedLineEnd = range.cpMin;
        }
    }

    CHARRANGE range = {highlightedLineStart, highlightedLineEnd};
    SendMessage((HWND)m_edit, EM_EXSETSEL, 0, (LPARAM)&range);

    format.dwEffects = CFE_BOLD;
    SendMessage((HWND)m_edit, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&format);

    range.cpMin = 0;
    range.cpMax = 0;
    SendMessage((HWND)m_edit, EM_EXSETSEL, 0, (LPARAM)&range);
}

void TaskList::CreateUI(void* window, int left, int top, int width, int height)
{
    // Create the window.
    LoadLibrary(_T("Riched20.dll"));
    m_edit = CreateWindowEx(
            0,                       //DWORD dwExStyle,
            RICHEDIT_CLASS,          //LPCTSTR lpClassName,
            0,                       //LPCTSTR lpWindowName,
            WS_CHILD | WS_VISIBLE | ES_LEFT | ES_MULTILINE | ES_READONLY,   //DWORD dwStyle,
            left,                    //int x,
            top,                     //int y,
            width,                   //int nWidth,
            height,                  //int nHeight,
            (HWND)window,            //HWND hWndParent,
            0,                                               //HMENU hMenu,
            GetModuleHandle(0),      //HINSTANCE hInstance,
            0);                      //LPVOID lpParam);
    HFONT font = Win32GUI::CreateFont();
    SendMessage((HWND)m_edit, WM_SETFONT, (WPARAM)font, 0);
    DeleteObject(font);
    SetColor();

    SetText("");
}

void TaskList::Resize(void* window, int left, int top, int width, int height)
{
    MoveWindow((HWND)m_edit, left, top, width, height, true);
}

void TaskList::DestroyUI(void* window)
{
    DestroyWindow((HWND)m_edit);
    m_edit = 0;
}

void TaskList::GetExtremeDimensions(void* window, int& minWidth, int& maxWidth, int& minHeight, int& maxHeight)
{
    minWidth = 10;
    maxWidth = 2000;
    int height = 25 * int(m_tasks.size());
    minHeight = height;
    maxHeight = height;
}