private void Deactivate()
{
if (IsMakingPdf)
{
_makePdfBackgroundWorker.CancelAsync();
}
_publishEpubApi?.AbortMakingEpub();
// This allows various cleanup of controls which we won't use again, since we
// always switch to this state when we reactivate the view.
// In particular, it is part of the solution to BL-4901 that the HtmlPublishPanel,
// if it is active, is removed (hence deactivated) and disposed.
SetDisplayMode(PublishModel.DisplayModes.WaitForUserToChooseSomething);
// This is only supposed to be active in one mode of PublishView.
if (_htmlControl != null)
{
Controls.Remove(_htmlControl);
_htmlControl.Dispose();
_htmlControl = null;
}
Browser.SuppressJavaScriptErrors = false;
Browser.ClearCache(); // of anything used in publish mode; may help free memory.
PublishHelper.Cancel();
PublishHelper.InPublishTab = false;
}
public void SetDisplayMode(PublishModel.DisplayModes displayMode)
{
// This is only supposed to be active in one mode of PublishView.
Browser.SuppressJavaScriptErrors = false;
Browser.ClearCache(); // try to free memory when switching
// Abort any work we're doing to prepare a preview (at least stop it interfering with other navigation).
PublishHelper.Cancel();
if (displayMode != PublishModel.DisplayModes.Upload && _uploadControl != null)
{
Controls.Remove(_uploadControl);
_uploadControl = null;
}
if ((displayMode != PublishModel.DisplayModes.Android || displayMode != PublishModel.DisplayModes.EPUB) &&
_htmlControl != null && Controls.Contains(_htmlControl))
{
Controls.Remove(_htmlControl);
// disposal of the browser is good but it hides a multitude of sins that we'd rather catch and fix during development. E.g. BL-4901
if (!ApplicationUpdateSupport.IsDevOrAlpha)
{
_htmlControl.Dispose();
_htmlControl = null;
}
}
switch (displayMode)
{
case PublishModel.DisplayModes.WaitForUserToChooseSomething:
_printButton.Enabled = _saveButton.Enabled = false;
Cursor = Cursors.Default;
_workingIndicator.Visible = false;
_pdfViewer.Visible = false;
break;
case PublishModel.DisplayModes.Working:
_printButton.Enabled = _saveButton.Enabled = false;
_workingIndicator.Cursor = Cursors.WaitCursor;
Cursor = Cursors.WaitCursor;
_workingIndicator.Visible = true;
_pdfViewer.Visible = false;
break;
case PublishModel.DisplayModes.ShowPdf:
Logger.WriteEvent("Entering Publish PDF Screen");
if (RobustFile.Exists(_model.PdfFilePath))
{
_pdfViewer.Visible = true;
_workingIndicator.Visible = false;
Cursor = Cursors.Default;
_saveButton.Enabled = true;
_printButton.Enabled = _pdfViewer.ShowPdf(_model.PdfFilePath);
}
break;
case PublishModel.DisplayModes.Printing:
_simpleAllPagesRadio.Enabled = false;
_bookletCoverRadio.Enabled = false;
_bookletBodyRadio.Enabled = false;
_printButton.Enabled = _saveButton.Enabled = false;
_workingIndicator.Cursor = Cursors.WaitCursor;
Cursor = Cursors.WaitCursor;
_workingIndicator.Visible = true;
_pdfViewer.Visible = true;
break;
case PublishModel.DisplayModes.ResumeAfterPrint:
_simpleAllPagesRadio.Enabled = true;
_pdfViewer.Visible = true;
_workingIndicator.Visible = false;
Cursor = Cursors.Default;
_saveButton.Enabled = true;
_printButton.Enabled = true;
_pdfViewer.Visible = true;
break;
case PublishModel.DisplayModes.Upload:
{
Logger.WriteEvent("Entering Publish Upload Screen");
_workingIndicator.Visible = false; // If we haven't finished creating the PDF, we will indicate that in the progress window.
_saveButton.Enabled = _printButton.Enabled = false; // Can't print or save in this mode...wouldn't be obvious what would be saved.
_pdfViewer.Visible = false;
Cursor = Cursors.Default;
if (_uploadControl == null)
{
SetupPublishControl();
}
break;
}
case PublishModel.DisplayModes.Android:
_saveButton.Enabled = _printButton.Enabled = false; // Can't print or save in this mode...wouldn't be obvious what would be saved.
BloomReaderFileMaker.ControlForInvoke = ParentForm; // something created on UI thread that won't go away
ShowHtmlPanel(BloomFileLocator.GetBrowserFile(false, "publish", "ReaderPublish", "loader.html"));
break;
case PublishModel.DisplayModes.EPUB:
_saveButton.Enabled = _printButton.Enabled = false; // Can't print or save in this mode...wouldn't be obvious what would be saved.
// We rather mangled the Readium code in the process of cutting away its own navigation
// and other controls. It produces all kinds of JavaScript errors, but it seems to do
// what we want in our preview. So just suppress the toasts for all of them. This is unfortunate because
// we'll lose them for all the other JS code in this pane. But I don't have a better solution.
// We still get them in the output window, in case we really want to look for one.
Browser.SuppressJavaScriptErrors = true;
PublishEpubApi.ControlForInvoke = ParentForm; // something created on UI thread that won't go away
ShowHtmlPanel(BloomFileLocator.GetBrowserFile(false, "publish", "ePUBPublish", "loader.html"));
break;
}
UpdateSaveButton();
}