xbmc/dialogs/GUIDialogTextViewer.cpp

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "GUIDialogTextViewer.h"
  10
  11 #include "GUIUserMessages.h"
  12 #include "ServiceBroker.h"
  13 #include "filesystem/File.h"
  14 #include "guilib/GUIComponent.h"
  15 #include "guilib/GUIWindowManager.h"
  16 #include "input/actions/Action.h"
  17 #include "input/actions/ActionIDs.h"
  18 #include "utils/URIUtils.h"
  19 #include "utils/log.h"
  20
  21 using namespace XFILE;
  22
  23 #define CONTROL_HEADING  1
  24 #define CONTROL_TEXTAREA 5
  25
  26 CGUIDialogTextViewer::CGUIDialogTextViewer(void)
  27     : CGUIDialog(WINDOW_DIALOG_TEXT_VIEWER, "DialogTextViewer.xml")
  28 {
  29   m_loadType = KEEP_IN_MEMORY;
  30 }
  31
  32 CGUIDialogTextViewer::~CGUIDialogTextViewer(void) = default;
  33
  34 bool CGUIDialogTextViewer::OnAction(const CAction &action)
  35 {
  36   if (action.GetID() == ACTION_TOGGLE_FONT)
  37   {
  38     UseMonoFont(!m_mono);
  39     return true;
  40   }
  41
  42   return CGUIDialog::OnAction(action);
  43 }
  44
  45 bool CGUIDialogTextViewer::OnMessage(CGUIMessage& message)
  46 {
  47   switch ( message.GetMessage() )
  48   {
  49   case GUI_MSG_WINDOW_INIT:
  50     {
  51       CGUIDialog::OnMessage(message);
  52       SetHeading();
  53       SetText();
  54       UseMonoFont(m_mono);
  55       return true;
  56     }
  57     break;
  58   case GUI_MSG_NOTIFY_ALL:
  59     {
  60       if (message.GetParam1() == GUI_MSG_UPDATE)
  61       {
  62         SetText();
  63         SetHeading();
  64         return true;
  65       }
  66     }
  67     break;
  68   default:
  69     break;
  70   }
  71   return CGUIDialog::OnMessage(message);
  72 }
  73
  74 void CGUIDialogTextViewer::SetText()
  75 {
  76   CGUIMessage msg(GUI_MSG_LABEL_SET, GetID(), CONTROL_TEXTAREA);
  77   msg.SetLabel(m_strText);
  78   OnMessage(msg);
  79 }
  80
  81 void CGUIDialogTextViewer::SetHeading()
  82 {
  83   CGUIMessage msg(GUI_MSG_LABEL_SET, GetID(), CONTROL_HEADING);
  84   msg.SetLabel(m_strHeading);
  85   OnMessage(msg);
  86 }
  87
  88 void CGUIDialogTextViewer::UseMonoFont(bool use)
  89 {
  90   m_mono = use;
  91   CGUIMessage msg(GUI_MSG_SET_TYPE, GetID(), CONTROL_TEXTAREA, use ? 1 : 0);
  92   OnMessage(msg);
  93 }
  94
  95 void CGUIDialogTextViewer::OnDeinitWindow(int nextWindowID)
  96 {
  97   CGUIDialog::OnDeinitWindow(nextWindowID);
  98
  99   // reset text area
 100   CGUIMessage msgReset(GUI_MSG_LABEL_RESET, GetID(), CONTROL_TEXTAREA);
 101   OnMessage(msgReset);
 102
 103   // reset heading
 104   SET_CONTROL_LABEL(CONTROL_HEADING, "");
 105 }
 106
 107 void CGUIDialogTextViewer::ShowForFile(const std::string& path, bool useMonoFont)
 108 {
 109   CFile file;
 110   if (file.Open(path))
 111   {
 112     std::string data;
 113     try
 114     {
 115       data.resize(file.GetLength()+1);
 116       file.Read(&data[0], file.GetLength());
 117       CGUIDialogTextViewer* pDialog = CServiceBroker::GetGUI()->GetWindowManager().GetWindow<CGUIDialogTextViewer>(WINDOW_DIALOG_TEXT_VIEWER);
 118       pDialog->SetHeading(URIUtils::GetFileName(path));
 119       pDialog->SetText(data);
 120       pDialog->UseMonoFont(useMonoFont);
 121       pDialog->Open();
 122     }
 123     catch(const std::bad_alloc&)
 124     {
 125       CLog::Log(LOGERROR, "Not enough memory to load text file {}", path);
 126     }
 127     catch(...)
 128     {
 129       CLog::Log(LOGERROR, "Exception while trying to view text file {}", path);
 130     }
 131   }
 132 }