boinc/clientgui/ViewNotices.cpp

// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC.  If not, see <http://www.gnu.org/licenses/>.

#if defined(__GNUG__) && !defined(__APPLE__)
#pragma implementation "ViewNotices.h"
#endif

#include "stdwx.h"
#include "BOINCGUIApp.h"
#include "BOINCBaseFrame.h"
#include "MainDocument.h"
#include "AdvancedFrame.h"
#include "BOINCTaskCtrl.h"
#include "ViewNotices.h"
#include "NoticeListCtrl.h"
#include "Events.h"
#include "error_numbers.h"


#include "res/mess.xpm"


IMPLEMENT_DYNAMIC_CLASS(CViewNotices, CBOINCBaseView)


CViewNotices::CViewNotices()
{}


CViewNotices::CViewNotices(wxNotebook* pNotebook) :
    CBOINCBaseView(pNotebook)
{
    //
    // Setup View
    //
    wxFlexGridSizer* itemFlexGridSizer = new wxFlexGridSizer(3, 1, 1, 0);
    wxASSERT(itemFlexGridSizer);

    itemFlexGridSizer->AddGrowableRow(2);
    itemFlexGridSizer->AddGrowableCol(0);

    m_FetchingNoticesText = new wxStaticText(
        this, wxID_ANY, 
        _("Fetching notices; please wait..."), 
        wxPoint(20, 20), wxDefaultSize, 0
    );
    itemFlexGridSizer->Add(m_FetchingNoticesText, 0, wxALL, 1);

    m_NoNoticesText = new wxStaticText(
        this, wxID_ANY, 
        _("There are no notices at this time."), 
        wxPoint(20, 20), wxDefaultSize, 0
    );
    itemFlexGridSizer->Add(m_NoNoticesText, 0, wxALL, 1);

	m_pHtmlListPane = new CNoticeListCtrl(this);
	wxASSERT(m_pHtmlListPane);

    itemFlexGridSizer->Add(m_pHtmlListPane, 1, wxGROW|wxALL, 1);

    SetSizer(itemFlexGridSizer);
    

    m_FetchingNoticesText->Hide();
    m_bFetchingNoticesTextWasDisplayed = false;

    m_NoNoticesText->Hide();
    m_bNoNoticesTextWasDisplayed = false;

    Layout();
}


CViewNotices::~CViewNotices() {
}


wxString& CViewNotices::GetViewName() {
    static wxString strViewName(wxT("Notices"));
    return strViewName;
}


wxString& CViewNotices::GetViewDisplayName() {
    static wxString strViewName(_("Notices"));
    return strViewName;
}


const char** CViewNotices::GetViewIcon() {
    return mess_xpm;
}


int CViewNotices::GetViewRefreshRate() {
    return 10;
}

int CViewNotices::GetViewCurrentViewPage() {
    return VW_NOTIF;
}


bool CViewNotices::OnSaveState(wxConfigBase* WXUNUSED(pConfig)) {
    return true;
}


bool CViewNotices::OnRestoreState(wxConfigBase* WXUNUSED(pConfig)) {
    return true;
}


void CViewNotices::OnListRender(wxTimerEvent& WXUNUSED(event)) {
    wxLogTrace(wxT("Function Start/End"), wxT("CViewNotices::OnListRender - Function Begin"));

    static bool s_bInProgress = false;
    static wxString strLastMachineName = wxEmptyString;
    wxString strNewMachineName = wxEmptyString;
    CC_STATUS status;
    CMainDocument* pDoc = wxGetApp().GetDocument();
    
    wxASSERT(pDoc);
	wxASSERT(m_pHtmlListPane);
    wxASSERT(wxDynamicCast(pDoc, CMainDocument));
    
    if (s_bInProgress) return;
    s_bInProgress = true;

    if (pDoc->IsConnected()) {
        pDoc->GetConnectedComputerName(strNewMachineName);
        if (strLastMachineName != strNewMachineName) {
            strLastMachineName = strNewMachineName;
            m_FetchingNoticesText->Show();
            m_NoNoticesText->Hide();
            m_pHtmlListPane->Clear();
            if (m_bNoNoticesTextWasDisplayed || !m_bFetchingNoticesTextWasDisplayed) {
                Layout();
            }
            m_bFetchingNoticesTextWasDisplayed = true;
            m_bNoNoticesTextWasDisplayed = false;
        }
    } else {
        m_pHtmlListPane->Clear();
    }

    // Don't call Freeze() / Thaw() here because it causes an unnecessary redraw
    m_pHtmlListPane->UpdateUI();
    
    if (m_bFetchingNoticesTextWasDisplayed != m_pHtmlListPane->m_bDisplayFetchingNotices) {
        m_bFetchingNoticesTextWasDisplayed = m_pHtmlListPane->m_bDisplayFetchingNotices;
        m_FetchingNoticesText->Show(m_bFetchingNoticesTextWasDisplayed);
        Layout();
    }
    if (m_bNoNoticesTextWasDisplayed != m_pHtmlListPane->m_bDisplayEmptyNotice) {
        m_bNoNoticesTextWasDisplayed = m_pHtmlListPane->m_bDisplayEmptyNotice;
        m_NoNoticesText->Show(m_bNoNoticesTextWasDisplayed);
        Layout();
    }

    pDoc->UpdateUnreadNoticeState();

    s_bInProgress = false;

    wxLogTrace(wxT("Function Start/End"), wxT("CViewNotices::OnListRender - Function End"));
}