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Implement Download page in webrequest sample

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This commit is contained in:
Tobias Taschner 2018-10-31 00:12:33 +01:00
parent faa81dcdf1
commit e9618ce657
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GPG Key ID: AE6ECD71294F87FD
1 changed files with 104 additions and 6 deletions
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110
samples/webrequest/webrequest.cpp
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@ -21,6 +21,7 @@
#include "wx/notebook.h"
#include "wx/artprov.h"
#include "wx/webrequest.h"
#include "wx/filedlg.h"
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
@ -103,11 +104,41 @@ public:
// Download page
wxPanel* downloadPanel = new wxPanel(m_notebook);
wxSizer* downloadSizer = new wxBoxSizer(wxVERTICAL);
wxStaticText* downloadHeader = new wxStaticText(downloadPanel, wxID_ANY,
"The URL will be downloaded to a file.\n"\
"Progress will be shown and you will be asked, where\n"\
"to save the file when the download completed.");
downloadSizer->Add(downloadHeader, wxSizerFlags().Expand().Border());
downloadSizer->AddStretchSpacer();
m_downloadGauge = new wxGauge(downloadPanel, wxID_ANY, 100);
downloadSizer->Add(m_downloadGauge, wxSizerFlags().Expand().Border());
m_downloadStaticText = new wxStaticText(downloadPanel, wxID_ANY, "");
downloadSizer->Add(m_downloadStaticText, wxSizerFlags().Expand().Border());
downloadSizer->AddStretchSpacer();
downloadPanel->SetSizer(downloadSizer);
m_notebook->AddPage(downloadPanel, "Download");
// Advanced page
wxPanel* advancedPanel = new wxPanel(m_notebook);
wxSizer* advSizer = new wxBoxSizer(wxVERTICAL);
wxStaticText* advHeader = new wxStaticText(advancedPanel, wxID_ANY,
"As an example of processing data while\n"\
"it's being received from the server every\n"\
"zero byte in the response will be counted below.");
advSizer->Add(advHeader, wxSizerFlags().Expand().Border());
advSizer->AddStretchSpacer();
m_advCountStaticText = new wxStaticText(advancedPanel, wxID_ANY, "0",
wxDefaultPosition, wxDefaultSize, wxALIGN_CENTRE_HORIZONTAL | wxST_NO_AUTORESIZE);
m_advCountStaticText->SetFont(m_advCountStaticText->GetFont()
.MakeBold().MakeLarger().MakeLarger());
advSizer->Add(m_advCountStaticText, wxSizerFlags().Expand().Border());
advSizer->AddStretchSpacer();
advancedPanel->SetSizer(advSizer);
m_notebook->AddPage(advancedPanel, "Advanced");
@ -123,9 +154,14 @@ public:
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE));
SetSizer(mainSizer);
SetSize(FromDIP(wxSize(400, 500)));
SetSize(FromDIP(wxSize(540, 500)));
CreateStatusBar();
m_downloadProgressTimer.Bind(wxEVT_TIMER,
&WebRequestFrame::OnProgressTimer, this);
m_downloadRequest = NULL;
}
void OnStartButton(wxCommandEvent& WXUNUSED(evt))
@ -158,10 +194,19 @@ public:
}
break;
case Page_Download:
// TODO: implement
m_downloadRequest = request.get();
request->SetStorage(wxWebRequest::Storage_File);
m_downloadGauge->SetValue(0);
m_downloadGauge->Pulse();
m_downloadStaticText->SetLabel("");
m_downloadProgressTimer.Start(500);
GetStatusBar()->SetStatusText("");
break;
case Page_Advanced:
// TODO: implement
request->SetStorage(wxWebRequest::Storage_None);
request->Bind(wxEVT_WEBREQUEST_DATA, &WebRequestFrame::OnRequestData, this);
m_advCountStaticText->SetLabel("0");
break;
}
@ -195,15 +240,61 @@ public:
evt.GetResponse()->GetStatus(),
evt.GetResponse()->GetStatusText()));
break;
}
case Page_Download:
{
// Force last progress update
wxTimerEvent timerEvt;
OnProgressTimer(timerEvt);
// Stop updating download progress
m_downloadRequest = NULL;
m_downloadProgressTimer.Stop();
GetStatusBar()->SetStatusText("Download completed");
// Ask the user where to save the file
wxFileDialog fileDlg(this, "Save download", "",
evt.GetResponse()->GetSuggestedFileName(), "*.*",
wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
if ( fileDlg.ShowModal() == wxID_OK )
{
if (!wxRenameFile(evt.GetResponseFileName(), fileDlg.GetPath()))
wxLogError("Could not move file");
}
break;
}
}
break;
case wxWebRequest::State_Failed:
// Stop updating download progress
m_downloadRequest = NULL;
m_downloadProgressTimer.Stop();
wxLogError("Web Request failed: %s", evt.GetErrorDescription());
GetStatusBar()->SetStatusText("");
break;
}
}
void OnRequestData(wxWebRequestEvent& evt)
{
}
void OnProgressTimer(wxTimerEvent& WXUNUSED(evt))
{
if (!m_downloadRequest || m_downloadRequest->GetBytesExpectedToReceive() <= 0)
return;
m_downloadGauge->SetValue((m_downloadRequest->GetBytesReceived() * 100) /
m_downloadRequest->GetBytesExpectedToReceive());
m_downloadStaticText->SetLabelText(wxString::Format("%lld/%lld",
m_downloadRequest->GetBytesReceived(), m_downloadRequest->GetBytesExpectedToReceive()));
}
void OnPostCheckBox(wxCommandEvent& WXUNUSED(evt))
{
m_postContentTypeTextCtrl->Enable(m_postCheckBox->IsChecked());
@ -227,10 +318,10 @@ public:
defaultURL = "https://httpbin.org/post";
break;
case Page_Download:
defaultURL = "https://www.wxwidgets.com/download.zip";
defaultURL = "https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.1/wxWidgets-3.1.1.7z";
break;
case Page_Advanced:
defaultURL = "https://www.wxwidgets.com/adv.zip";
defaultURL = "https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.1/wxWidgets-3.1.1.tar.bz2";
break;
}
m_urlTextCtrl->SetValue(defaultURL);
@ -246,6 +337,13 @@ private:
wxTextCtrl* m_postContentTypeTextCtrl;
wxTextCtrl* m_postRequestTextCtrl;
wxTextCtrl* m_textResponseTextCtrl;
wxGauge* m_downloadGauge;
wxStaticText* m_downloadStaticText;
wxTimer m_downloadProgressTimer;
wxWebRequest* m_downloadRequest;
wxStaticText* m_advCountStaticText;
};
class WebRequestApp : public wxApp