public override async Task <bool> ShowMasterDetailPage(Type view, MvvmCross.Forms.Presenters.Attributes.MvxMasterDetailPagePresentationAttribute attribute, MvxViewModelRequest request)
{
var page = await CloseAndCreatePage(view, request, attribute);
if (attribute.Position == MasterDetailPosition.Root)
{
if (page is FlyoutPage masterDetailRoot)
{
if (masterDetailRoot.Flyout == null)
{
masterDetailRoot.Flyout = CreateContentPage().Build(cp => cp.Title = !string.IsNullOrEmpty(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage));
}
if (masterDetailRoot.Detail == null)
{
masterDetailRoot.Detail = CreateContentPage().Build(cp => cp.Title = !string.IsNullOrEmpty(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage));
}
await PushOrReplacePage(FormsApplication.MainPage, page, attribute);
}
else
{
throw new MvxException($"A root page should be of type {nameof(FlyoutPage)}");
}
}
else
{
FlyoutPage masterDetailHost = null;
if (attribute is MvxCustomMasterDetailPagePresentationAttribute attr && attr.MasterHostViewType != null)
{
masterDetailHost = GetPageOfTypeByType(attr.MasterHostViewType) as FlyoutPage;
}
if (masterDetailHost == null)
{
masterDetailHost = GetPageOfType <FlyoutPage>();
}
if (masterDetailHost == null)
{
//Assume we have to create the host
masterDetailHost = CreateMasterDetailPage();
if (!string.IsNullOrWhiteSpace(attribute.Icon))
{
masterDetailHost.IconImageSource = attribute.Icon;
}
masterDetailHost.Flyout = CreateContentPage().Build(cp => cp.Title = !string.IsNullOrWhiteSpace(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage));
masterDetailHost.Detail = CreateContentPage();
var masterDetailRootAttribute = new MvxMasterDetailPagePresentationAttribute {
Position = MasterDetailPosition.Root, WrapInNavigationPage = attribute.WrapInNavigationPage, NoHistory = attribute.NoHistory
};
await PushOrReplacePage(FormsApplication.MainPage, masterDetailHost, masterDetailRootAttribute);
}
if (attribute.Position == MasterDetailPosition.Master)
{
await PushOrReplacePage(masterDetailHost.Flyout, page, attribute);
}
else
{
await PushOrReplacePage(masterDetailHost.Detail, page, attribute);
}
}
return(true);
}
public virtual void ShowMasterDetailPage(
Type view,
MvxMasterDetailPagePresentationAttribute attribute,
MvxViewModelRequest request)
{
CloseAllModals();
var page = CreatePage(view, request);
if (attribute.Position == MasterDetailPosition.Root)
{
if (page is MasterDetailPage masterDetailRoot)
{
if (masterDetailRoot.Master == null)
{
masterDetailRoot.Master = new MvxContentPage()
{
Title = "MvvmCross"
}
}
;
if (masterDetailRoot.Detail == null)
{
masterDetailRoot.Detail = new MvxContentPage()
{
Title = "MvvmCross"
}
}
;
if (attribute.WrapInNavigationPage && FormsApplication.MainPage is MvxNavigationPage currentPage)
{
currentPage.PushAsync(page);
}
else if (attribute.WrapInNavigationPage)
{
FormsApplication.MainPage = new MvxNavigationPage(page);
}
else
{
FormsApplication.MainPage = page;
}
}
else
{
throw new MvxException($"A root page should be of type {nameof(MasterDetailPage)}");
}
}
else
{
var masterDetailHost = FormsApplication.MainPage as MasterDetailPage;
if (masterDetailHost == null && FormsApplication.MainPage is MvxNavigationPage navigationPage)
{
masterDetailHost = navigationPage.CurrentPage as MasterDetailPage;
if (masterDetailHost == null)
{
masterDetailHost = new MasterDetailPage();
masterDetailHost.Master = new MvxContentPage()
{
Title = "MvvmCross"
};
masterDetailHost.Detail = new MvxContentPage()
{
Title = "MvvmCross"
};
navigationPage.PushAsync(masterDetailHost);
}
}
else if (masterDetailHost == null)
{
//Assume we have to create the host
masterDetailHost = new MasterDetailPage();
masterDetailHost.Master = new MvxContentPage()
{
Title = "MvvmCross"
};
masterDetailHost.Detail = new MvxContentPage()
{
Title = "MvvmCross"
};
FormsApplication.MainPage = masterDetailHost;
}
if (attribute.Position == MasterDetailPosition.Master)
{
if (attribute.WrapInNavigationPage && masterDetailHost.Master is MvxNavigationPage navigationMasterPage)
{
navigationMasterPage.PushAsync(page);
}
else if (attribute.WrapInNavigationPage)
{
masterDetailHost.Master = new MvxNavigationPage(page);
}
else
{
masterDetailHost.Master = page;
}
}
else
{
if (attribute.WrapInNavigationPage && masterDetailHost.Detail is MvxNavigationPage navigationDetailPage)
{
navigationDetailPage.PushAsync(page);
}
else if (attribute.WrapInNavigationPage)
{
masterDetailHost.Detail = new MvxNavigationPage(page);
}
else
{
masterDetailHost.Detail = page;
}
}
}
}
public virtual void ShowMasterDetailPage(
Type view,
MvxMasterDetailPagePresentationAttribute attribute,
MvxViewModelRequest request)
{
var page = CloseAndCreatePage(view, request, attribute);
if (attribute.Position == MasterDetailPosition.Root)
{
if (page is MasterDetailPage masterDetailRoot)
{
if (masterDetailRoot.Master == null)
{
masterDetailRoot.Master = new MvxContentPage()
{
Title = !string.IsNullOrEmpty(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage)
}
}
;
if (masterDetailRoot.Detail == null)
{
masterDetailRoot.Detail = new MvxContentPage()
{
Title = !string.IsNullOrEmpty(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage)
}
}
;
PushOrReplacePage(FormsApplication.MainPage, page, attribute);
}
else
{
throw new MvxException($"A root page should be of type {nameof(MasterDetailPage)}");
}
}
else
{
var masterDetailHost = GetHostPageOfType <MvxMasterDetailPage>();
if (masterDetailHost == null)
{
//Assume we have to create the host
masterDetailHost = new MvxMasterDetailPage();
if (!string.IsNullOrWhiteSpace(attribute.Icon))
{
masterDetailHost.Icon = attribute.Icon;
}
masterDetailHost.Master = new MvxContentPage()
{
Title = !string.IsNullOrWhiteSpace(attribute.Title) ? attribute.Title : nameof(MvxMasterDetailPage)
};
masterDetailHost.Detail = new MvxContentPage();
var masterDetailRootAttribute = new MvxMasterDetailPagePresentationAttribute {
Position = MasterDetailPosition.Root, WrapInNavigationPage = attribute.WrapInNavigationPage, NoHistory = attribute.NoHistory
};
PushOrReplacePage(FormsApplication.MainPage, masterDetailHost, masterDetailRootAttribute);
}
if (attribute.Position == MasterDetailPosition.Master)
{
PushOrReplacePage(masterDetailHost.Master, page, attribute);
}
else
{
PushOrReplacePage(masterDetailHost.Detail, page, attribute);
}
}
}
private MvxMasterDetailPagePresentationAttribute CreateMasterDetailRootAttribute(MvxMasterDetailPagePresentationAttribute attribute)
{
return(new MvxMasterDetailPagePresentationAttribute
{
Position = MasterDetailPosition.Root,
WrapInNavigationPage = attribute.WrapInNavigationPage,
// MK This is a workaround for the issue on iOS, where setting FormsApplication.MainPage with a new NavigationPage (or other Page for that matter)
// is not working. By setting NoHistory flag to false we avoid replacing the current MainPage with a brand new one. Instead, we navigate to the MasterDetail page
// leaving the already existing NavigationPage intact.
//
// This issue is being tracked in here: https://yambay.atlassian.net/browse/PRODEV-4896
NoHistory = false
});
}
