#include "globalreplacedialog.h"
#include "wrapregex.h"

BEGIN_EVENT_TABLE(GlobalReplaceDialog, wxDialog)
  EVT_BUTTON(wxID_OK, GlobalReplaceDialog::OnOk)
  EVT_HELP_RANGE(ID_FIND, ID_ALLDOCUMENTS, GlobalReplaceDialog::OnContextHelp)
  EVT_HELP(wxID_OK, GlobalReplaceDialog::OnContextHelp)
  EVT_HELP(wxID_CANCEL, GlobalReplaceDialog::OnContextHelp)
  EVT_UPDATE_UI(wxID_OK, GlobalReplaceDialog::OnUpdateOk)
END_EVENT_TABLE()

GlobalReplaceDialog::GlobalReplaceDialog(
      wxWindow *parent,
      const wxString& findParameter,
      const wxString& replaceParameter,
      bool matchCaseParameter,
      bool allDocumentsParameter,
      bool regexParameter) :
        wxDialog(),
        find(findParameter),
        replace(replaceParameter),
        matchCase(matchCaseParameter),
        allDocuments(allDocumentsParameter),
        regex(regexParameter)
{
  SetExtraStyle(wxDIALOG_EX_CONTEXTHELP);
  Create(
    parent,
    wxID_ANY,
    wxString(_("Global Find and Replace")),
    wxDefaultPosition,
    wxSize(-1, -1),
    wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER);

  wxBoxSizer *dialogSizer = new wxBoxSizer(wxVERTICAL);
  wxStaticText *findLabel = new wxStaticText(this, ID_FIND, _("&Find what: "));
  wxStaticText *replaceLabel =
    new wxStaticText(this, ID_REPLACE, _("Replace with: "));
  findCtrl = new wxTextCtrl(
    this,
    ID_FIND,
    find,
    wxDefaultPosition,
    wxSize(400, -1));

  replaceCtrl = new wxTextCtrl(
    this,
    ID_REPLACE,
    replace,
    wxDefaultPosition,
    wxSize(400, -1));

  regexBox =
    new wxCheckBox(this, ID_REGEX, _("&Regex"));
  regexBox->SetValue(regex);

  matchCaseBox =
    new wxCheckBox(this, ID_MATCHCASE, _("&Match case"));
  matchCaseBox->SetValue(matchCase);
  
  allDocumentsBox =
    new wxCheckBox(this, ID_ALLDOCUMENTS, _("R&eplace in all open documents"));
  allDocumentsBox->SetValue(allDocuments);
  
  dialogSizer->Add(findLabel, 0, wxTOP | wxLEFT | wxALIGN_LEFT, 5);
  dialogSizer->Add(findCtrl, 0, wxALL | wxALIGN_LEFT | wxEXPAND, 5);
  dialogSizer->Add(replaceLabel, 0, wxTOP | wxLEFT | wxALIGN_LEFT, 5);
  dialogSizer->Add(replaceCtrl, 0, wxALL | wxALIGN_LEFT | wxEXPAND, 5);
  dialogSizer->Add(matchCaseBox, 0, wxALL | wxALIGN_LEFT, 5);
  dialogSizer->Add(regexBox, 0, wxALL | wxALIGN_LEFT, 5);
  dialogSizer->Add(allDocumentsBox, 0, wxALL | wxALIGN_LEFT, 5);
  dialogSizer->Add(
    CreateButtonSizer(wxOK | wxCANCEL), 0, wxTOP | wxBOTTOM | wxALIGN_RIGHT, 5);
  this->SetSizer(dialogSizer);
  dialogSizer->SetSizeHints(this);
  findCtrl->SetFocus();
}

GlobalReplaceDialog::~GlobalReplaceDialog()
{ }

void GlobalReplaceDialog::OnOk(wxCommandEvent& e)
{
  std::string findUtf8, replaceUtf8;
  find = findCtrl->GetValue();
  replace = replaceCtrl->GetValue();
  findUtf8 = (const char *)find.mb_str(wxConvUTF8);
  replaceUtf8 = (const char *)replace.mb_str(wxConvUTF8);
  regex = regexBox->GetValue();
  allDocuments = allDocumentsBox->GetValue();
  matchCase = matchCaseBox->GetValue();

  if (regex)
  {
    try {
      std::auto_ptr<WrapRegex> wr(new WrapRegex(
        findUtf8,
        matchCase,
        replaceUtf8));
    }
    catch (std::exception& e)
    {
      std::string pcreError(e.what());
      wxString widePcreError =
        wxString(pcreError.c_str(), wxConvUTF8, pcreError.size());
      wxMessageBox(
        _("Cannot compile regular expression '") +
        findCtrl->GetValue() +
        _T("': ") +
        widePcreError,
        _("Global Find and Replace"));
      return; 
    }
  }
  e.Skip();
}

void GlobalReplaceDialog::OnContextHelp(wxHelpEvent& e)
{
  wxTipWindow *tw;

  int id = e.GetId();
  if (id == ID_FIND)
    tw = new wxTipWindow(
      this,
      _("Provides a space for you to type the text you want to find"));
  else if (id == ID_REPLACE)
    tw = new wxTipWindow(
      this,
      _("Provides a space for you to type the text you want to replace the text you typed in Find what"));
  else if (id == ID_MATCHCASE)
    tw = new wxTipWindow(
      this,
      _("Finds only text with lowercase and uppercase letters as specified in Find what"));
  else if (id == ID_ALLDOCUMENTS)
    tw = new wxTipWindow(
      this,
      _("Extends the scope to all open documents"));
  else if (id == ID_REGEX)
    tw = new wxTipWindow(
      this,
      _("Interprets the text specified in Find what as a regular expression"));
  else if (id == wxID_OK)
    tw = new wxTipWindow(
      this,
      _("Finds all instances of the text specified in Find what and replaces them with the text in Replace with"));
  else if (id == wxID_CANCEL)
    tw = new wxTipWindow(
      this,
      _("Closes the dialog box without saving any changes you have made"));
  else { }
  e.Skip();
}

void GlobalReplaceDialog::OnUpdateOk(wxUpdateUIEvent& e)
{
  e.Enable(!findCtrl->GetValue().empty());
}


wxString GlobalReplaceDialog::getFindString() { return find; }
wxString GlobalReplaceDialog::getReplaceString() { return replace; }
bool GlobalReplaceDialog::getRegex() { return regex; }
bool GlobalReplaceDialog::getAllDocuments() { return allDocuments; }
bool GlobalReplaceDialog::getMatchCase() { return matchCase; }