public void Navigate(Type viewModelType, INavigatorViewModel containerViewModel)
{
Type pageType = new TypesRegistry().GetViewType(viewModelType);
_containerPage = containerViewModel.AssociatedPage;
_containerPage.Frame.Navigate(pageType);
NavigatedToPage?.Invoke(null, null);
}
private void OnBackRequested(object sender, BackRequestedEventArgs e)
{
if (!_containerPage.Frame.CanGoBack)
{
return;
}
_containerPage.Frame.GoBack();
NavigatedToPage?.Invoke(sender, null);
e.Handled = true;
}
/// <summary>
/// <inheritdoc/>
/// </summary>
public void NavigateToPage(int pageIndex)
{
if (pageIndex < 1 || pageIndex > PageCount)
{
return;
}
var previousCurrentPageIndex = CurrentPageIndex;
SetCurrentInformation(GetPage(pageIndex - 1));
NavigatedToPage?.Invoke(this, new NavigatedToPageEventArgs(previousCurrentPageIndex, CurrentPageIndex));
}
/// <summary>
/// <inheritdoc/>
/// </summary>
public void NavigateToDestination(IPDFDestination destination)
{
if (destination == null)
{
return;
}
if (destination.PageIndex < 0 || destination.PageIndex >= PageCount)
{
return;
}
var previousCurrentPageIndex = CurrentPageIndex;
SetCurrentInformation(GetPage(destination.PageIndex));
NavigatedToPage?.Invoke(this, new NavigatedToPageEventArgs(previousCurrentPageIndex, CurrentPageIndex));
}
/// <summary>
/// <inheritdoc/>
/// </summary>
public void NavigateToFindPlace(IPDFFindPosition position)
{
if (position == null)
{
return;
}
ClearSelectionRectangles();
if (position is PDFFindPosition ourPosition &&
position.Page.RelatedPage is PDFPage ourPage)
{
PageIndexWithSelections = ourPage.PageIndex;
var positionX = -1;
var positionY = -1;
var pageHandle = _mainComponent.PDFiumBridge.FPDF_LoadPage(_mainComponent.PDFiumDocument, ourPosition.Page.RelatedPage.PageIndex);
var textPageHandle = _mainComponent.PDFiumBridge.FPDFText_LoadPage(pageHandle);
var rectCount = _mainComponent.PDFiumBridge.FPDFText_CountRects(textPageHandle, ourPosition.Position, ourPosition.Length);
for (int i = 0; i < rectCount; i++)
{
double left, top, right, bottom;
left = top = right = bottom = 0;
if (_mainComponent.PDFiumBridge.FPDFText_GetRect(textPageHandle, i, ref left, ref top, ref right, ref bottom))
{
AddSelectionRectangle(left, top, right, bottom);
if (positionX == -1)
{
positionX = (int)Math.Round(left, 0);
positionY = (int)Math.Round(top, 0);
}
}
}
_mainComponent.PDFiumBridge.FPDFText_ClosePage(textPageHandle);
_mainComponent.PDFiumBridge.FPDF_ClosePage(pageHandle);
var previousCurrentPageIndex = CurrentPageIndex;
var currentPageIndex = position.Page.RelatedPage.PageIndex + 1;
SetCurrentInformation(position.Page.RelatedPage);
NavigatedToPage?.Invoke(this, new NavigatedToPageEventArgs(previousCurrentPageIndex, CurrentPageIndex, positionX, positionY));
}
/// <summary>
/// <inheritdoc/>
/// </summary>
public void PerformAction(IPDFAction action)
{
if (action == null)
{
return;
}
if (action.ActionType != PDFActionType.Goto)
{
PerformOutsideAction?.Invoke(this, new PerformActionEventArgs(action));
return;
}
if (action.Destination == null || action.Destination.PageIndex < 0 || action.Destination.PageIndex >= PageCount)
{
return;
}
var previousCurrentPageIndex = CurrentPageIndex;
SetCurrentInformation(GetPage(action.Destination.PageIndex));
NavigatedToPage?.Invoke(this, new NavigatedToPageEventArgs(previousCurrentPageIndex, CurrentPageIndex));
}
