network_content_gui.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "../stdafx.h"
#include "../strings_func.h"
#include "../gfx_func.h"
#include "../window_func.h"
#include "../error.h"
#include "../ai/ai.hpp"
#include "../game/game.hpp"
#include "../base_media_base.h"
#include "../openttd.h"
#include "../sortlist_type.h"
#include "../stringfilter_type.h"
#include "../querystring_gui.h"
#include "../core/geometry_func.hpp"
#include "../textfile_gui.h"
#include "network_content_gui.h"
 
 
#include "table/strings.h"
#include "../table/sprites.h"
 
#include <bitset>
 
#include "../safeguards.h"
 
 
static bool _accepted_external_search = false;
 
 
struct ContentTextfileWindow : public TextfileWindow {
  const ContentInfo *ci; 
 
  ContentTextfileWindow(TextfileType file_type, const ContentInfo *ci) : TextfileWindow(file_type), ci(ci)
  {
    const char *textfile = this->ci->GetTextfile(file_type);
    this->LoadTextfile(textfile, GetContentInfoSubDir(this->ci->type));
  }
 
  StringID GetTypeString() const
  {
    switch (this->ci->type) {
      case CONTENT_TYPE_NEWGRF:        return STR_CONTENT_TYPE_NEWGRF;
      case CONTENT_TYPE_BASE_GRAPHICS: return STR_CONTENT_TYPE_BASE_GRAPHICS;
      case CONTENT_TYPE_BASE_SOUNDS:   return STR_CONTENT_TYPE_BASE_SOUNDS;
      case CONTENT_TYPE_BASE_MUSIC:    return STR_CONTENT_TYPE_BASE_MUSIC;
      case CONTENT_TYPE_AI:            return STR_CONTENT_TYPE_AI;
      case CONTENT_TYPE_AI_LIBRARY:    return STR_CONTENT_TYPE_AI_LIBRARY;
      case CONTENT_TYPE_GAME:          return STR_CONTENT_TYPE_GAME_SCRIPT;
      case CONTENT_TYPE_GAME_LIBRARY:  return STR_CONTENT_TYPE_GS_LIBRARY;
      case CONTENT_TYPE_SCENARIO:      return STR_CONTENT_TYPE_SCENARIO;
      case CONTENT_TYPE_HEIGHTMAP:     return STR_CONTENT_TYPE_HEIGHTMAP;
      default: NOT_REACHED();
    }
  }
 
  void SetStringParameters(int widget) const override
  {
    if (widget == WID_TF_CAPTION) {
      SetDParam(0, this->GetTypeString());
      SetDParamStr(1, this->ci->name);
    }
  }
};
 
void ShowContentTextfileWindow(TextfileType file_type, const ContentInfo *ci)
{
  CloseWindowById(WC_TEXTFILE, file_type);
  new ContentTextfileWindow(file_type, ci);
}
 
static const NWidgetPart _nested_network_content_download_status_window_widgets[] = {
  NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_CONTENT_DOWNLOAD_TITLE, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
  NWidget(WWT_PANEL, COLOUR_GREY),
    NWidget(NWID_VERTICAL), SetPIP(0, WidgetDimensions::unscaled.vsep_wide, 0), SetPadding(WidgetDimensions::unscaled.modalpopup),
      NWidget(WWT_EMPTY, INVALID_COLOUR, WID_NCDS_PROGRESS_BAR), SetFill(1, 0),
      NWidget(WWT_EMPTY, INVALID_COLOUR, WID_NCDS_PROGRESS_TEXT), SetFill(1, 0), SetMinimalSize(350, 0),
      NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCDS_CANCELOK), SetDataTip(STR_BUTTON_CANCEL, STR_NULL), SetFill(1, 0),
    EndContainer(),
  EndContainer(),
};
 
static WindowDesc _network_content_download_status_window_desc(
  WDP_CENTER, nullptr, 0, 0,
  WC_NETWORK_STATUS_WINDOW, WC_NONE,
  WDF_MODAL,
  _nested_network_content_download_status_window_widgets, lengthof(_nested_network_content_download_status_window_widgets)
);
 
BaseNetworkContentDownloadStatusWindow::BaseNetworkContentDownloadStatusWindow(WindowDesc *desc) :
    Window(desc), cur_id(UINT32_MAX)
{
  _network_content_client.AddCallback(this);
  _network_content_client.DownloadSelectedContent(this->total_files, this->total_bytes);
 
  this->InitNested(WN_NETWORK_STATUS_WINDOW_CONTENT_DOWNLOAD);
}
 
void BaseNetworkContentDownloadStatusWindow::Close()
{
  _network_content_client.RemoveCallback(this);
  this->Window::Close();
}
 
void BaseNetworkContentDownloadStatusWindow::UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
{
  switch (widget) {
    case WID_NCDS_PROGRESS_BAR:
      SetDParamMaxDigits(0, 8);
      SetDParamMaxDigits(1, 8);
      SetDParamMaxDigits(2, 8);
      *size = GetStringBoundingBox(STR_CONTENT_DOWNLOAD_PROGRESS_SIZE);
      /* We need some spacing for the 'border' */
      size->height += WidgetDimensions::scaled.frametext.Horizontal();
      size->width  += WidgetDimensions::scaled.frametext.Vertical();
      break;
 
    case WID_NCDS_PROGRESS_TEXT:
      size->height = FONT_HEIGHT_NORMAL * 2 + WidgetDimensions::scaled.vsep_normal;
      break;
  }
}
 
void BaseNetworkContentDownloadStatusWindow::DrawWidget(const Rect &r, int widget) const
{
  switch (widget) {
    case WID_NCDS_PROGRESS_BAR: {
      /* Draw the % complete with a bar and a text */
      DrawFrameRect(r, COLOUR_GREY, FR_BORDERONLY | FR_LOWERED);
      Rect ir = r.Shrink(WidgetDimensions::scaled.bevel);
      DrawFrameRect(ir.WithWidth((uint64)ir.Width() * this->downloaded_bytes / this->total_bytes, false), COLOUR_MAUVE, FR_NONE);
      SetDParam(0, this->downloaded_bytes);
      SetDParam(1, this->total_bytes);
      SetDParam(2, this->downloaded_bytes * 100LL / this->total_bytes);
      DrawString(ir.left, ir.right, CenterBounds(ir.top, ir.bottom, FONT_HEIGHT_NORMAL), STR_CONTENT_DOWNLOAD_PROGRESS_SIZE, TC_FROMSTRING, SA_HOR_CENTER);
      break;
    }
 
    case WID_NCDS_PROGRESS_TEXT: {
      StringID str;
      if (this->downloaded_bytes == this->total_bytes) {
        str = STR_CONTENT_DOWNLOAD_COMPLETE;
      } else if (!this->name.empty()) {
        SetDParamStr(0, this->name);
        SetDParam(1, this->downloaded_files);
        SetDParam(2, this->total_files);
        str = STR_CONTENT_DOWNLOAD_FILE;
      } else {
        str = STR_CONTENT_DOWNLOAD_INITIALISE;
      }
      DrawStringMultiLine(r, str, TC_FROMSTRING, SA_CENTER);
      break;
    }
  }
}
 
void BaseNetworkContentDownloadStatusWindow::OnDownloadProgress(const ContentInfo *ci, int bytes)
{
  if (ci->id != this->cur_id) {
    this->name = ci->filename;
    this->cur_id = ci->id;
    this->downloaded_files++;
  }
 
  this->downloaded_bytes += bytes;
  this->SetDirty();
}
 
 
struct NetworkContentDownloadStatusWindow : public BaseNetworkContentDownloadStatusWindow {
private:
  std::vector<ContentType> receivedTypes;     
 
public:
  NetworkContentDownloadStatusWindow() : BaseNetworkContentDownloadStatusWindow(&_network_content_download_status_window_desc)
  {
    this->parent = FindWindowById(WC_NETWORK_WINDOW, WN_NETWORK_WINDOW_CONTENT_LIST);
  }
 
  void Close() override
  {
    TarScanner::Mode mode = TarScanner::NONE;
    for (auto ctype : this->receivedTypes) {
      switch (ctype) {
        case CONTENT_TYPE_AI:
        case CONTENT_TYPE_AI_LIBRARY:
          /* AI::Rescan calls the scanner. */
          break;
        case CONTENT_TYPE_GAME:
        case CONTENT_TYPE_GAME_LIBRARY:
          /* Game::Rescan calls the scanner. */
          break;
 
        case CONTENT_TYPE_BASE_GRAPHICS:
        case CONTENT_TYPE_BASE_SOUNDS:
        case CONTENT_TYPE_BASE_MUSIC:
          mode |= TarScanner::BASESET;
          break;
 
        case CONTENT_TYPE_NEWGRF:
          /* ScanNewGRFFiles calls the scanner. */
          break;
 
        case CONTENT_TYPE_SCENARIO:
        case CONTENT_TYPE_HEIGHTMAP:
          mode |= TarScanner::SCENARIO;
          break;
 
        default:
          break;
      }
    }
 
    TarScanner::DoScan(mode);
 
    /* Tell all the backends about what we've downloaded */
    for (auto ctype : this->receivedTypes) {
      switch (ctype) {
        case CONTENT_TYPE_AI:
        case CONTENT_TYPE_AI_LIBRARY:
          AI::Rescan();
          break;
 
        case CONTENT_TYPE_GAME:
        case CONTENT_TYPE_GAME_LIBRARY:
          Game::Rescan();
          break;
 
        case CONTENT_TYPE_BASE_GRAPHICS:
          BaseGraphics::FindSets();
          SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_OPTIONS);
          break;
 
        case CONTENT_TYPE_BASE_SOUNDS:
          BaseSounds::FindSets();
          SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_OPTIONS);
          break;
 
        case CONTENT_TYPE_BASE_MUSIC:
          BaseMusic::FindSets();
          SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_OPTIONS);
          break;
 
        case CONTENT_TYPE_NEWGRF:
          RequestNewGRFScan();
          break;
 
        case CONTENT_TYPE_SCENARIO:
        case CONTENT_TYPE_HEIGHTMAP:
          extern void ScanScenarios();
          ScanScenarios();
          InvalidateWindowData(WC_SAVELOAD, 0, 0);
          break;
 
        default:
          break;
      }
    }
 
    /* Always invalidate the download window; tell it we are going to be gone */
    InvalidateWindowData(WC_NETWORK_WINDOW, WN_NETWORK_WINDOW_CONTENT_LIST, 2);
 
    this->BaseNetworkContentDownloadStatusWindow::Close();
  }
 
  void OnClick(Point pt, int widget, int click_count) override
  {
    if (widget == WID_NCDS_CANCELOK) {
      if (this->downloaded_bytes != this->total_bytes) {
        _network_content_client.CloseConnection();
        this->Close();
      } else {
        /* If downloading succeeded, close the online content window. This will close
         * the current window as well. */
        CloseWindowById(WC_NETWORK_WINDOW, WN_NETWORK_WINDOW_CONTENT_LIST);
      }
    }
  }
 
  void OnDownloadProgress(const ContentInfo *ci, int bytes) override
  {
    BaseNetworkContentDownloadStatusWindow::OnDownloadProgress(ci, bytes);
    include(this->receivedTypes, ci->type);
 
    /* When downloading is finished change cancel in ok */
    if (this->downloaded_bytes == this->total_bytes) {
      this->GetWidget<NWidgetCore>(WID_NCDS_CANCELOK)->widget_data = STR_BUTTON_OK;
    }
  }
};
 
struct ContentListFilterData {
  StringFilter string_filter; 
  std::bitset<CONTENT_TYPE_END> types; 
};
 
enum ContentListFilterCriteria {
  CONTENT_FILTER_TEXT = 0,        
  CONTENT_FILTER_TYPE_OR_SELECTED,
};
 
class NetworkContentListWindow : public Window, ContentCallback {
  typedef GUIList<const ContentInfo *, ContentListFilterData &> GUIContentList;
 
  static const uint EDITBOX_MAX_SIZE   =  50; 
 
  static Listing last_sorting;     
  static Filtering last_filtering; 
  static GUIContentList::SortFunction * const sorter_funcs[];   
  static GUIContentList::FilterFunction * const filter_funcs[]; 
  GUIContentList content;      
  bool auto_select;            
  ContentListFilterData filter_data; 
  QueryString filter_editbox;  
  Dimension checkbox_size;     
 
  const ContentInfo *selected; 
  int list_pos;                
  uint filesize_sum;           
  Scrollbar *vscroll;          
 
  static char content_type_strs[CONTENT_TYPE_END][64]; 
 
  void OpenExternalSearch()
  {
    extern void OpenBrowser(const char *url);
 
    char url[1024];
    const char *last = lastof(url);
 
    char *pos = strecpy(url, "https://grfsearch.openttd.org/?", last);
 
    if (this->auto_select) {
      pos = strecpy(pos, "do=searchgrfid&q=", last);
 
      bool first = true;
      for (const ContentInfo *ci : this->content) {
        if (ci->state != ContentInfo::DOES_NOT_EXIST) continue;
 
        if (!first) pos = strecpy(pos, ",", last);
        first = false;
 
        pos += seprintf(pos, last, "%08X", ci->unique_id);
        pos = strecpy(pos, ":", last);
        pos = md5sumToString(pos, last, ci->md5sum);
      }
    } else {
      pos = strecpy(pos, "do=searchtext&q=", last);
 
      /* Escape search term */
      for (const char *search = this->filter_editbox.text.buf; *search != '\0'; search++) {
        /* Remove quotes */
        if (*search == '\'' || *search == '"') continue;
 
        /* Escape special chars, such as &%,= */
        if (*search < 0x30) {
          pos += seprintf(pos, last, "%%%02X", *search);
        } else if (pos < last) {
          *pos = *search;
          *++pos = '\0';
        }
      }
    }
 
    OpenBrowser(url);
  }
 
  static void ExternalSearchDisclaimerCallback(Window *w, bool accepted)
  {
    if (accepted) {
      _accepted_external_search = true;
      ((NetworkContentListWindow*)w)->OpenExternalSearch();
    }
  }
 
  void BuildContentList()
  {
    if (!this->content.NeedRebuild()) return;
 
    /* Create temporary array of games to use for listing */
    this->content.clear();
 
    bool all_available = true;
 
    for (ConstContentIterator iter = _network_content_client.Begin(); iter != _network_content_client.End(); iter++) {
      if ((*iter)->state == ContentInfo::DOES_NOT_EXIST) all_available = false;
      this->content.push_back(*iter);
    }
 
    this->SetWidgetDisabledState(WID_NCL_SEARCH_EXTERNAL, this->auto_select && all_available);
 
    this->FilterContentList();
    this->content.shrink_to_fit();
    this->content.RebuildDone();
    this->SortContentList();
 
    this->vscroll->SetCount((int)this->content.size()); // Update the scrollbar
    this->ScrollToSelected();
  }
 
  static bool NameSorter(const ContentInfo * const &a, const ContentInfo * const &b)
  {
    return strnatcmp(a->name.c_str(), b->name.c_str(), true) < 0; // Sort by name (natural sorting).
  }
 
  static bool TypeSorter(const ContentInfo * const &a, const ContentInfo * const &b)
  {
    int r = 0;
    if (a->type != b->type) {
      r = strnatcmp(content_type_strs[a->type], content_type_strs[b->type]);
    }
    if (r == 0) return NameSorter(a, b);
    return r < 0;
  }
 
  static bool StateSorter(const ContentInfo * const &a, const ContentInfo * const &b)
  {
    int r = a->state - b->state;
    if (r == 0) return TypeSorter(a, b);
    return r < 0;
  }
 
  void SortContentList()
  {
    if (!this->content.Sort()) return;
 
    int idx = find_index(this->content, this->selected);
    if (idx >= 0) this->list_pos = idx;
  }
 
  static bool CDECL TagNameFilter(const ContentInfo * const *a, ContentListFilterData &filter)
  {
    filter.string_filter.ResetState();
    for (auto &tag : (*a)->tags) filter.string_filter.AddLine(tag.c_str());
 
    filter.string_filter.AddLine((*a)->name.c_str());
    return filter.string_filter.GetState();
  }
 
  static bool CDECL TypeOrSelectedFilter(const ContentInfo * const *a, ContentListFilterData &filter)
  {
    if (filter.types.none()) return true;
    if (filter.types[(*a)->type]) return true;
    return ((*a)->state == ContentInfo::SELECTED || (*a)->state == ContentInfo::AUTOSELECTED);
  }
 
  void FilterContentList()
  {
    /* Apply filters. */
    bool changed = false;
    if (!this->filter_data.string_filter.IsEmpty()) {
      this->content.SetFilterType(CONTENT_FILTER_TEXT);
      changed |= this->content.Filter(this->filter_data);
    }
    if (this->filter_data.types.any()) {
      this->content.SetFilterType(CONTENT_FILTER_TYPE_OR_SELECTED);
      changed |= this->content.Filter(this->filter_data);
    }
    if (!changed) return;
 
    /* update list position */
    int idx = find_index(this->content, this->selected);
    if (idx >= 0) {
      this->list_pos = idx;
      return;
    }
 
    /* previously selected item not in list anymore */
    this->selected = nullptr;
    this->list_pos = 0;
  }
 
  bool UpdateFilterState()
  {
    Filtering old_params = this->content.GetFiltering();
    bool new_state = !this->filter_data.string_filter.IsEmpty() || this->filter_data.types.any();
    if (new_state != old_params.state) {
      this->content.SetFilterState(new_state);
    }
    return new_state != old_params.state;
  }
 
  void ScrollToSelected()
  {
    if (this->selected == nullptr) return;
 
    this->vscroll->ScrollTowards(this->list_pos);
  }
 
  friend void BuildContentTypeStringList();
public:
  NetworkContentListWindow(WindowDesc *desc, bool select_all, const std::bitset<CONTENT_TYPE_END> &types) :
      Window(desc),
      auto_select(select_all),
      filter_editbox(EDITBOX_MAX_SIZE),
      selected(nullptr),
      list_pos(0)
  {
    this->CreateNestedTree();
    this->vscroll = this->GetScrollbar(WID_NCL_SCROLLBAR);
    this->FinishInitNested(WN_NETWORK_WINDOW_CONTENT_LIST);
 
    this->GetWidget<NWidgetStacked>(WID_NCL_SEL_ALL_UPDATE)->SetDisplayedPlane(select_all);
 
    this->querystrings[WID_NCL_FILTER] = &this->filter_editbox;
    this->filter_editbox.cancel_button = QueryString::ACTION_CLEAR;
    this->SetFocusedWidget(WID_NCL_FILTER);
    this->SetWidgetDisabledState(WID_NCL_SEARCH_EXTERNAL, this->auto_select);
    this->filter_data.types = types;
 
    _network_content_client.AddCallback(this);
    this->content.SetListing(this->last_sorting);
    this->content.SetFiltering(this->last_filtering);
    this->content.SetSortFuncs(this->sorter_funcs);
    this->content.SetFilterFuncs(this->filter_funcs);
    this->UpdateFilterState();
    this->content.ForceRebuild();
    this->FilterContentList();
    this->SortContentList();
    this->InvalidateData();
  }
 
  void Close() override
  {
    _network_content_client.RemoveCallback(this);
    this->Window::Close();
  }
 
  void OnInit() override
  {
    this->checkbox_size = maxdim(maxdim(GetSpriteSize(SPR_BOX_EMPTY), GetSpriteSize(SPR_BOX_CHECKED)), GetSpriteSize(SPR_BLOT));
  }
 
  void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override
  {
    switch (widget) {
      case WID_NCL_CHECKBOX:
        size->width = this->checkbox_size.width + padding.width;
        break;
 
      case WID_NCL_TYPE: {
        Dimension d = *size;
        for (int i = CONTENT_TYPE_BEGIN; i < CONTENT_TYPE_END; i++) {
          d = maxdim(d, GetStringBoundingBox(STR_CONTENT_TYPE_BASE_GRAPHICS + i - CONTENT_TYPE_BASE_GRAPHICS));
        }
        size->width = d.width + padding.width;
        break;
      }
 
      case WID_NCL_MATRIX:
        resize->height = std::max(this->checkbox_size.height, (uint)FONT_HEIGHT_NORMAL) + padding.height;
        size->height = 10 * resize->height;
        break;
    }
  }
 
 
  void DrawWidget(const Rect &r, int widget) const override
  {
    switch (widget) {
      case WID_NCL_DETAILS:
        this->DrawDetails(r);
        break;
 
      case WID_NCL_MATRIX:
        this->DrawMatrix(r);
        break;
    }
  }
 
  void OnPaint() override
  {
    const SortButtonState arrow = this->content.IsDescSortOrder() ? SBS_DOWN : SBS_UP;
 
    if (this->content.NeedRebuild()) {
      this->BuildContentList();
    }
 
    this->DrawWidgets();
 
    switch (this->content.SortType()) {
      case WID_NCL_CHECKBOX - WID_NCL_CHECKBOX: this->DrawSortButtonState(WID_NCL_CHECKBOX, arrow); break;
      case WID_NCL_TYPE     - WID_NCL_CHECKBOX: this->DrawSortButtonState(WID_NCL_TYPE,     arrow); break;
      case WID_NCL_NAME     - WID_NCL_CHECKBOX: this->DrawSortButtonState(WID_NCL_NAME,     arrow); break;
    }
  }
 
  void DrawMatrix(const Rect &r) const
  {
    Rect checkbox = this->GetWidget<NWidgetBase>(WID_NCL_CHECKBOX)->GetCurrentRect();
    Rect name = this->GetWidget<NWidgetBase>(WID_NCL_NAME)->GetCurrentRect().Shrink(WidgetDimensions::scaled.framerect);
    Rect type = this->GetWidget<NWidgetBase>(WID_NCL_TYPE)->GetCurrentRect();
 
    /* Fill the matrix with the information */
    int sprite_y_offset = (this->resize.step_height - this->checkbox_size.height) / 2;
    int text_y_offset   = (this->resize.step_height - FONT_HEIGHT_NORMAL) / 2;
 
    Rect mr = r.WithHeight(this->resize.step_height);
    auto iter = this->content.begin() + this->vscroll->GetPosition();
    size_t last = this->vscroll->GetPosition() + this->vscroll->GetCapacity();
    auto end = (last < this->content.size()) ? this->content.begin() + last : this->content.end();
 
    for (; iter != end; iter++) {
      const ContentInfo *ci = *iter;
 
      if (ci == this->selected) GfxFillRect(mr.Shrink(WidgetDimensions::scaled.bevel), PC_GREY);
 
      SpriteID sprite;
      SpriteID pal = PAL_NONE;
      switch (ci->state) {
        case ContentInfo::UNSELECTED:     sprite = SPR_BOX_EMPTY;   break;
        case ContentInfo::SELECTED:       sprite = SPR_BOX_CHECKED; break;
        case ContentInfo::AUTOSELECTED:   sprite = SPR_BOX_CHECKED; break;
        case ContentInfo::ALREADY_HERE:   sprite = SPR_BLOT; pal = PALETTE_TO_GREEN; break;
        case ContentInfo::DOES_NOT_EXIST: sprite = SPR_BLOT; pal = PALETTE_TO_RED;   break;
        default: NOT_REACHED();
      }
      DrawSprite(sprite, pal, checkbox.left + (sprite == SPR_BLOT ? 3 : 2), mr.top + sprite_y_offset + (sprite == SPR_BLOT ? 0 : 1));
 
      StringID str = STR_CONTENT_TYPE_BASE_GRAPHICS + ci->type - CONTENT_TYPE_BASE_GRAPHICS;
      DrawString(type.left, type.right, mr.top + text_y_offset, str, TC_BLACK, SA_HOR_CENTER);
 
      DrawString(name.left, name.right, mr.top + text_y_offset, ci->name, TC_BLACK);
      mr = mr.Translate(0, this->resize.step_height);
    }
  }
 
  void DrawDetails(const Rect &r) const
  {
    /* Height for the title banner */
    int HEADER_HEIGHT = 3 * FONT_HEIGHT_NORMAL + WidgetDimensions::scaled.frametext.Vertical();
 
    Rect hr = r.WithHeight(HEADER_HEIGHT).Shrink(WidgetDimensions::scaled.frametext);
    Rect tr = r.Shrink(WidgetDimensions::scaled.frametext);
    tr.top += HEADER_HEIGHT;
 
    /* Create the nice grayish rectangle at the details top */
    GfxFillRect(r.WithHeight(HEADER_HEIGHT).Shrink(WidgetDimensions::scaled.bevel.left, WidgetDimensions::scaled.bevel.top, WidgetDimensions::scaled.bevel.right, 0), PC_DARK_BLUE);
    DrawString(hr.left, hr.right, hr.top, STR_CONTENT_DETAIL_TITLE, TC_FROMSTRING, SA_HOR_CENTER);
 
    /* Draw the total download size */
    SetDParam(0, this->filesize_sum);
    DrawString(tr.left, tr.right, tr.bottom - FONT_HEIGHT_NORMAL + 1, STR_CONTENT_TOTAL_DOWNLOAD_SIZE);
 
    if (this->selected == nullptr) return;
 
    /* And fill the rest of the details when there's information to place there */
    DrawStringMultiLine(hr.left, hr.right, hr.top + FONT_HEIGHT_NORMAL, hr.bottom, STR_CONTENT_DETAIL_SUBTITLE_UNSELECTED + this->selected->state, TC_FROMSTRING, SA_CENTER);
 
    /* Also show the total download size, so keep some space from the bottom */
    tr.bottom -= FONT_HEIGHT_NORMAL + WidgetDimensions::scaled.vsep_wide;
 
    if (this->selected->upgrade) {
      SetDParam(0, STR_CONTENT_TYPE_BASE_GRAPHICS + this->selected->type - CONTENT_TYPE_BASE_GRAPHICS);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_UPDATE);
      tr.top += WidgetDimensions::scaled.vsep_wide;
    }
 
    SetDParamStr(0, this->selected->name);
    tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_NAME);
 
    if (!this->selected->version.empty()) {
      SetDParamStr(0, this->selected->version);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_VERSION);
    }
 
    if (!this->selected->description.empty()) {
      SetDParamStr(0, this->selected->description);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_DESCRIPTION);
    }
 
    if (!this->selected->url.empty()) {
      SetDParamStr(0, this->selected->url);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_URL);
    }
 
    SetDParam(0, STR_CONTENT_TYPE_BASE_GRAPHICS + this->selected->type - CONTENT_TYPE_BASE_GRAPHICS);
    tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_TYPE);
 
    tr.top += WidgetDimensions::scaled.vsep_wide;
    SetDParam(0, this->selected->filesize);
    tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_FILESIZE);
 
    if (!this->selected->dependencies.empty()) {
      /* List dependencies */
      char buf[DRAW_STRING_BUFFER] = "";
      char *p = buf;
      for (auto &cid : this->selected->dependencies) {
        /* Try to find the dependency */
        ConstContentIterator iter = _network_content_client.Begin();
        for (; iter != _network_content_client.End(); iter++) {
          const ContentInfo *ci = *iter;
          if (ci->id != cid) continue;
 
          p += seprintf(p, lastof(buf), p == buf ? "%s" : ", %s", (*iter)->name.c_str());
          break;
        }
      }
      SetDParamStr(0, buf);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_DEPENDENCIES);
    }
 
    if (!this->selected->tags.empty()) {
      /* List all tags */
      char buf[DRAW_STRING_BUFFER] = "";
      char *p = buf;
      for (auto &tag : this->selected->tags) {
        p += seprintf(p, lastof(buf), p == buf ? "%s" : ", %s", tag.c_str());
      }
      SetDParamStr(0, buf);
      tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_TAGS);
    }
 
    if (this->selected->IsSelected()) {
      /* When selected show all manually selected content that depends on this */
      ConstContentVector tree;
      _network_content_client.ReverseLookupTreeDependency(tree, this->selected);
 
      char buf[DRAW_STRING_BUFFER] = "";
      char *p = buf;
      for (const ContentInfo *ci : tree) {
        if (ci == this->selected || ci->state != ContentInfo::SELECTED) continue;
 
        p += seprintf(p, lastof(buf), buf == p ? "%s" : ", %s", ci->name.c_str());
      }
      if (p != buf) {
        SetDParamStr(0, buf);
        tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_SELECTED_BECAUSE_OF);
      }
    }
  }
 
  void OnClick(Point pt, int widget, int click_count) override
  {
    if (widget >= WID_NCL_TEXTFILE && widget < WID_NCL_TEXTFILE + TFT_END) {
      if (this->selected == nullptr || this->selected->state != ContentInfo::ALREADY_HERE) return;
 
      ShowContentTextfileWindow((TextfileType)(widget - WID_NCL_TEXTFILE), this->selected);
      return;
    }
 
    switch (widget) {
      case WID_NCL_MATRIX: {
        uint id_v = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_NCL_MATRIX);
        if (id_v >= this->content.size()) return; // click out of bounds
 
        this->selected = this->content[id_v];
        this->list_pos = id_v;
 
        const NWidgetBase *checkbox = this->GetWidget<NWidgetBase>(WID_NCL_CHECKBOX);
        if (click_count > 1 || IsInsideBS(pt.x, checkbox->pos_x, checkbox->current_x)) {
          _network_content_client.ToggleSelectedState(this->selected);
          this->content.ForceResort();
        }
 
        if (this->filter_data.types.any()) {
          this->content.ForceRebuild();
        }
 
        this->InvalidateData();
        break;
      }
 
      case WID_NCL_CHECKBOX:
      case WID_NCL_TYPE:
      case WID_NCL_NAME:
        if (this->content.SortType() == widget - WID_NCL_CHECKBOX) {
          this->content.ToggleSortOrder();
          if (this->content.size() > 0) this->list_pos = (int)this->content.size() - this->list_pos - 1;
        } else {
          this->content.SetSortType(widget - WID_NCL_CHECKBOX);
          this->content.ForceResort();
          this->SortContentList();
        }
        this->ScrollToSelected();
        this->InvalidateData();
        break;
 
      case WID_NCL_SELECT_ALL:
        _network_content_client.SelectAll();
        this->InvalidateData();
        break;
 
      case WID_NCL_SELECT_UPDATE:
        _network_content_client.SelectUpgrade();
        this->InvalidateData();
        break;
 
      case WID_NCL_UNSELECT:
        _network_content_client.UnselectAll();
        this->InvalidateData();
        break;
 
      case WID_NCL_CANCEL:
        this->Close();
        break;
 
      case WID_NCL_OPEN_URL:
        if (this->selected != nullptr) {
          extern void OpenBrowser(const char *url);
          OpenBrowser(this->selected->url.c_str());
        }
        break;
 
      case WID_NCL_DOWNLOAD:
        if (BringWindowToFrontById(WC_NETWORK_STATUS_WINDOW, WN_NETWORK_STATUS_WINDOW_CONTENT_DOWNLOAD) == nullptr) new NetworkContentDownloadStatusWindow();
        break;
 
      case WID_NCL_SEARCH_EXTERNAL:
        if (_accepted_external_search) {
          this->OpenExternalSearch();
        } else {
          ShowQuery(STR_CONTENT_SEARCH_EXTERNAL_DISCLAIMER_CAPTION, STR_CONTENT_SEARCH_EXTERNAL_DISCLAIMER, this, ExternalSearchDisclaimerCallback);
        }
        break;
    }
  }
 
  EventState OnKeyPress(WChar key, uint16 keycode) override
  {
    if (this->vscroll->UpdateListPositionOnKeyPress(this->list_pos, keycode) == ES_NOT_HANDLED) {
      switch (keycode) {
        case WKC_SPACE:
        case WKC_RETURN:
          if (keycode == WKC_RETURN || !IsWidgetFocused(WID_NCL_FILTER)) {
            if (this->selected != nullptr) {
              _network_content_client.ToggleSelectedState(this->selected);
              this->content.ForceResort();
              this->InvalidateData();
            }
            if (this->filter_data.types.any()) {
              this->content.ForceRebuild();
              this->InvalidateData();
            }
            return ES_HANDLED;
          }
          /* space is pressed and filter is focused. */
          FALLTHROUGH;
 
        default:
          return ES_NOT_HANDLED;
      }
    }
 
    if (this->content.size() == 0) {
      if (this->UpdateFilterState()) {
        this->content.ForceRebuild();
        this->InvalidateData();
      }
      return ES_HANDLED;
    }
 
    this->selected = this->content[this->list_pos];
 
    if (this->UpdateFilterState()) {
      this->content.ForceRebuild();
    } else {
      /* Scroll to the new content if it is outside the current range. */
      this->ScrollToSelected();
    }
 
    /* redraw window */
    this->InvalidateData();
    return ES_HANDLED;
  }
 
  void OnEditboxChanged(int wid) override
  {
    if (wid == WID_NCL_FILTER) {
      this->filter_data.string_filter.SetFilterTerm(this->filter_editbox.text.buf);
      this->UpdateFilterState();
      this->content.ForceRebuild();
      this->InvalidateData();
    }
  }
 
  void OnResize() override
  {
    this->vscroll->SetCapacityFromWidget(this, WID_NCL_MATRIX);
  }
 
  void OnReceiveContentInfo(const ContentInfo *rci) override
  {
    if (this->auto_select && !rci->IsSelected()) _network_content_client.ToggleSelectedState(rci);
    this->content.ForceRebuild();
    this->InvalidateData(0, false);
  }
 
  void OnDownloadComplete(ContentID cid) override
  {
    this->content.ForceResort();
    this->InvalidateData();
  }
 
  void OnConnect(bool success) override
  {
    if (!success) {
      ShowErrorMessage(STR_CONTENT_ERROR_COULD_NOT_CONNECT, INVALID_STRING_ID, WL_ERROR);
      this->Close();
      return;
    }
 
    this->InvalidateData();
  }
 
  void OnInvalidateData(int data = 0, bool gui_scope = true) override
  {
    if (!gui_scope) return;
    if (this->content.NeedRebuild()) this->BuildContentList();
 
    /* To sum all the bytes we intend to download */
    this->filesize_sum = 0;
    bool show_select_all = false;
    bool show_select_upgrade = false;
    for (const ContentInfo *ci : this->content) {
      switch (ci->state) {
        case ContentInfo::SELECTED:
        case ContentInfo::AUTOSELECTED:
          this->filesize_sum += ci->filesize;
          break;
 
        case ContentInfo::UNSELECTED:
          show_select_all = true;
          show_select_upgrade |= ci->upgrade;
          break;
 
        default:
          break;
      }
    }
 
    /* If data == 2 then the status window caused this OnInvalidate */
    this->SetWidgetDisabledState(WID_NCL_DOWNLOAD, this->filesize_sum == 0 || (FindWindowById(WC_NETWORK_STATUS_WINDOW, WN_NETWORK_STATUS_WINDOW_CONTENT_DOWNLOAD) != nullptr && data != 2));
    this->SetWidgetDisabledState(WID_NCL_UNSELECT, this->filesize_sum == 0);
    this->SetWidgetDisabledState(WID_NCL_SELECT_ALL, !show_select_all);
    this->SetWidgetDisabledState(WID_NCL_SELECT_UPDATE, !show_select_upgrade);
    this->SetWidgetDisabledState(WID_NCL_OPEN_URL, this->selected == nullptr || this->selected->url.empty());
    for (TextfileType tft = TFT_BEGIN; tft < TFT_END; tft++) {
      this->SetWidgetDisabledState(WID_NCL_TEXTFILE + tft, this->selected == nullptr || this->selected->state != ContentInfo::ALREADY_HERE || this->selected->GetTextfile(tft) == nullptr);
    }
 
    this->GetWidget<NWidgetCore>(WID_NCL_CANCEL)->widget_data = this->filesize_sum == 0 ? STR_AI_SETTINGS_CLOSE : STR_AI_LIST_CANCEL;
  }
};
 
Listing NetworkContentListWindow::last_sorting = {false, 1};
Filtering NetworkContentListWindow::last_filtering = {false, 0};
 
NetworkContentListWindow::GUIContentList::SortFunction * const NetworkContentListWindow::sorter_funcs[] = {
  &StateSorter,
  &TypeSorter,
  &NameSorter,
};
 
NetworkContentListWindow::GUIContentList::FilterFunction * const NetworkContentListWindow::filter_funcs[] = {
  &TagNameFilter,
  &TypeOrSelectedFilter,
};
 
char NetworkContentListWindow::content_type_strs[CONTENT_TYPE_END][64];
 
void BuildContentTypeStringList()
{
  for (int i = CONTENT_TYPE_BEGIN; i < CONTENT_TYPE_END; i++) {
    GetString(NetworkContentListWindow::content_type_strs[i], STR_CONTENT_TYPE_BASE_GRAPHICS + i - CONTENT_TYPE_BASE_GRAPHICS, lastof(NetworkContentListWindow::content_type_strs[i]));
  }
}
 
static const NWidgetPart _nested_network_content_list_widgets[] = {
  NWidget(NWID_HORIZONTAL),
    NWidget(WWT_CLOSEBOX, COLOUR_LIGHT_BLUE),
    NWidget(WWT_CAPTION, COLOUR_LIGHT_BLUE), SetDataTip(STR_CONTENT_TITLE, STR_NULL),
    NWidget(WWT_DEFSIZEBOX, COLOUR_LIGHT_BLUE),
  EndContainer(),
  NWidget(WWT_PANEL, COLOUR_LIGHT_BLUE, WID_NCL_BACKGROUND),
    NWidget(NWID_SPACER), SetMinimalSize(0, 7), SetResize(1, 0),
    NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(8, 8, 8),
      /* Top */
      NWidget(WWT_TEXT, COLOUR_LIGHT_BLUE, WID_NCL_FILTER_CAPT), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_CONTENT_FILTER_TITLE, STR_NULL), SetAlignment(SA_RIGHT),
      NWidget(WWT_EDITBOX, COLOUR_LIGHT_BLUE, WID_NCL_FILTER), SetFill(1, 0), SetResize(1, 0),
            SetDataTip(STR_LIST_FILTER_OSKTITLE, STR_LIST_FILTER_TOOLTIP),
    EndContainer(),
    NWidget(NWID_SPACER), SetMinimalSize(0, 7), SetResize(1, 0),
    NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(8, 8, 8),
      /* Left side. */
      NWidget(NWID_VERTICAL), SetPIP(0, 4, 0),
        NWidget(NWID_HORIZONTAL),
          NWidget(NWID_VERTICAL),
            NWidget(NWID_HORIZONTAL),
              NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_CHECKBOX), SetMinimalSize(13, 1), SetDataTip(STR_EMPTY, STR_NULL),
              NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_TYPE),
                      SetDataTip(STR_CONTENT_TYPE_CAPTION, STR_CONTENT_TYPE_CAPTION_TOOLTIP),
              NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_NAME), SetResize(1, 0), SetFill(1, 0),
                      SetDataTip(STR_CONTENT_NAME_CAPTION, STR_CONTENT_NAME_CAPTION_TOOLTIP),
            EndContainer(),
            NWidget(WWT_MATRIX, COLOUR_LIGHT_BLUE, WID_NCL_MATRIX), SetResize(1, 14), SetFill(1, 1), SetScrollbar(WID_NCL_SCROLLBAR), SetMatrixDataTip(1, 0, STR_CONTENT_MATRIX_TOOLTIP),
          EndContainer(),
          NWidget(NWID_VSCROLLBAR, COLOUR_LIGHT_BLUE, WID_NCL_SCROLLBAR),
        EndContainer(),
        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(0, 8, 0),
          NWidget(NWID_SELECTION, INVALID_COLOUR, WID_NCL_SEL_ALL_UPDATE), SetResize(1, 0), SetFill(1, 0),
            NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_SELECT_UPDATE), SetResize(1, 0), SetFill(1, 0),
                        SetDataTip(STR_CONTENT_SELECT_UPDATES_CAPTION, STR_CONTENT_SELECT_UPDATES_CAPTION_TOOLTIP),
            NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_SELECT_ALL), SetResize(1, 0), SetFill(1, 0),
                        SetDataTip(STR_CONTENT_SELECT_ALL_CAPTION, STR_CONTENT_SELECT_ALL_CAPTION_TOOLTIP),
          EndContainer(),
          NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_UNSELECT), SetResize(1, 0), SetFill(1, 0),
                        SetDataTip(STR_CONTENT_UNSELECT_ALL_CAPTION, STR_CONTENT_UNSELECT_ALL_CAPTION_TOOLTIP),
        EndContainer(),
      EndContainer(),
      /* Right side. */
      NWidget(NWID_VERTICAL), SetPIP(0, 4, 0),
        NWidget(WWT_PANEL, COLOUR_LIGHT_BLUE, WID_NCL_DETAILS), SetResize(1, 1), SetFill(1, 1), EndContainer(),
        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(0, 8, 0),
          NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_TEXTFILE + TFT_README), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_README, STR_NULL),
          NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_TEXTFILE + TFT_CHANGELOG), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_CHANGELOG, STR_NULL),
        EndContainer(),
        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(0, 8, 0),
          NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_OPEN_URL), SetResize(1, 0), SetFill(1, 0), SetDataTip(STR_CONTENT_OPEN_URL, STR_CONTENT_OPEN_URL_TOOLTIP),
          NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_TEXTFILE + TFT_LICENSE), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_TEXTFILE_VIEW_LICENCE, STR_NULL),
        EndContainer(),
      EndContainer(),
    EndContainer(),
    NWidget(NWID_SPACER), SetMinimalSize(0, 7), SetResize(1, 0),
    /* Bottom. */
    NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(8, 8, 8),
      NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_SEARCH_EXTERNAL), SetResize(1, 0), SetFill(1, 0),
                    SetDataTip(STR_CONTENT_SEARCH_EXTERNAL, STR_CONTENT_SEARCH_EXTERNAL_TOOLTIP),
      NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(0, 8, 0),
        NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_CANCEL), SetResize(1, 0), SetFill(1, 0),
                      SetDataTip(STR_BUTTON_CANCEL, STR_NULL),
        NWidget(WWT_PUSHTXTBTN, COLOUR_WHITE, WID_NCL_DOWNLOAD), SetResize(1, 0), SetFill(1, 0),
                      SetDataTip(STR_CONTENT_DOWNLOAD_CAPTION, STR_CONTENT_DOWNLOAD_CAPTION_TOOLTIP),
      EndContainer(),
    EndContainer(),
    NWidget(NWID_SPACER), SetMinimalSize(0, 2), SetResize(1, 0),
    /* Resize button. */
    NWidget(NWID_HORIZONTAL),
      NWidget(NWID_SPACER), SetFill(1, 0), SetResize(1, 0),
      NWidget(WWT_RESIZEBOX, COLOUR_LIGHT_BLUE),
    EndContainer(),
  EndContainer(),
};
 
static WindowDesc _network_content_list_desc(
  WDP_CENTER, "list_content", 630, 460,
  WC_NETWORK_WINDOW, WC_NONE,
  0,
  _nested_network_content_list_widgets, lengthof(_nested_network_content_list_widgets)
);
 
void ShowNetworkContentListWindow(ContentVector *cv, ContentType type1, ContentType type2)
{
#if defined(WITH_ZLIB)
  std::bitset<CONTENT_TYPE_END> types;
  _network_content_client.Clear();
  if (cv == nullptr) {
    assert(type1 != CONTENT_TYPE_END || type2 == CONTENT_TYPE_END);
    assert(type1 == CONTENT_TYPE_END || type1 != type2);
    _network_content_client.RequestContentList(type1);
    if (type2 != CONTENT_TYPE_END) _network_content_client.RequestContentList(type2);
 
    if (type1 != CONTENT_TYPE_END) types[type1] = true;
    if (type2 != CONTENT_TYPE_END) types[type2] = true;
  } else {
    _network_content_client.RequestContentList(cv, true);
  }
 
  CloseWindowById(WC_NETWORK_WINDOW, WN_NETWORK_WINDOW_CONTENT_LIST);
  new NetworkContentListWindow(&_network_content_list_desc, cv != nullptr, types);
#else
  ShowErrorMessage(STR_CONTENT_NO_ZLIB, STR_CONTENT_NO_ZLIB_SUB, WL_ERROR);
  /* Connection failed... clean up the mess */
  if (cv != nullptr) {
    for (ContentInfo *ci : *cv) delete ci;
  }
#endif /* WITH_ZLIB */
}