Engauge Digitizer  2
FileCmdScript.cpp
1 /******************************************************************************************************
2  * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3  * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4  * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5  ******************************************************************************************************/
6 
7 #include "FileCmdAbstract.h"
8 #include "FileCmdFactory.h"
9 #include "FileCmdScript.h"
10 #include "FileCmdSerialize.h"
11 #include "Logger.h"
12 #include "MainWindow.h"
13 #include <QDir>
14 #include <QFile>
15 #include <QMessageBox>
16 #include <QXmlStreamReader>
17 #include "Xml.h"
18 
19 FileCmdScript::FileCmdScript(const QString &fileCmdScriptFile)
20 {
21  LOG4CPP_INFO_S ((*mainCat)) << "FileCmdScript::FileCmdScript"
22  << " curDir=" << QDir::currentPath().toLatin1().data();
23 
24  // Read commands into stack. The file is known to exist since it was checked in parseCmdLine
25  QFile file (fileCmdScriptFile);
26 
27  QXmlStreamReader reader (&file);
28  if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
29 
30  QString msg = QString ("%1 %2 %3 %4")
31  .arg (QObject::tr ("Cannot read script file"))
32  .arg (fileCmdScriptFile)
33  .arg (QObject::tr ("from directory"))
34  .arg (QDir::currentPath());
35  QMessageBox::critical (0,
36  "Script File",
37  msg);
38  exit (-1);
39  }
40 
41  // Load commands
42  FileCmdFactory factory;
43  while (!reader.atEnd() && !reader.hasError()) {
44 
45  if ((loadNextFromReader (reader) == QXmlStreamReader::StartElement) &&
46  (reader.name() == FILE_CMD_SERIALIZE_CMD)) {
47 
48  // Extract and append new command to command stack
49  m_fileCmdStack.push_back (factory.createFileCmd (reader));
50  }
51  }
52  file.close();
53 }
54 
55 FileCmdScript::~FileCmdScript()
56 {
57 }
58 
60 {
61  LOG4CPP_INFO_S ((*mainCat)) << "FileCmdScript::canRedo";
62 
63  return (m_fileCmdStack.count () > 0);
64 }
65 
67 {
68  LOG4CPP_INFO_S ((*mainCat)) << "FileCmdScript::redo";
69 
70  m_fileCmdStack.first()->redo(mainWindow);
71  m_fileCmdStack.pop_front();
72 }
bool canRedo() const
Returns true if there is at least one command on the stack.
FileCmdScript(const QString &fileCmdScriptFile)
Single constructor.
void redo(MainWindow &mainWindow)
Apply the next command. Requires non-empty stack.
FileCmdAbstract * createFileCmd(QXmlStreamReader &reader) const
Create one FileCmdAbstract from the specified xml subtree.
Factory that creates FileCmds from a file cmd script file, in xml format.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Definition: MainWindow.h:89