/// <summary>
/// Instructs the component to show the specified page.
/// </summary>
/// <param name="criteria">Details of the page to be displayed.</param>
public async Task PageAsync(PageCriteria criteria)
{
SetPageCriteria(criteria);
await GetDataAsync().ConfigureAwait(true);
await PageChanged.InvokeAsync(criteria).ConfigureAwait(true);
}
public void PreviousPage()
{
if (Collection.Count == 0)
{
return;
}
int oldPage = CurrentPage;
if (CurrentPage == 0)
{
if (!InfiniteCycle)
{
return;
}
CurrentPage = TotalPages - 1;
}
else
{
CurrentPage--;
}
UpdateMedias();
if (oldPage != CurrentPage)
{
PageChanged?.Invoke(this, new MediaCollectionPageChangedEventArgs(CurrentPage, TotalPages));
}
}
protected void OnPaginationItemClick(string pageName)
{
if (int.TryParse(pageName, out var pageNumber))
{
CurrentPage = pageNumber;
}
else
{
if (pageName == "prev")
{
CurrentPage--;
if (CurrentPage < 1)
{
CurrentPage = 1;
}
}
else if (pageName == "next")
{
CurrentPage++;
if (CurrentPage > LastPage)
{
CurrentPage = LastPage;
}
}
}
PageChanged?.Invoke(CurrentPage.ToString());
}
private static void ChangePage(INavigablePage page, object parameter)
{
CurrentPage?.OnNavigatedFrom();
page.OnNavigatedTo(parameter);
CurrentPage = page;
PageChanged?.Invoke(null, EventArgs.Empty);
}
protected override void OnApplyTemplate()
{
SetValue(TemplateSettingsProperty, new PagerTemplateSettings(this));
NumberPanelEndStateStartIndex = NumberOfPages - 3;
// Grab UIElements for later
FirstPageButton = GetTemplateChild("FirstPageButton") as Button;
PreviousPageButton = GetTemplateChild("PreviousPageButton") as Button;
NextPageButton = GetTemplateChild("NextPageButton") as Button;
LastPageButton = GetTemplateChild("LastPageButton") as Button;
PagerComboBox = GetTemplateChild("ComboBoxDisplay") as ComboBox;
PagerNumberBox = GetTemplateChild("NumberBoxDisplay") as NumberBox;
PagerNumberPanel = GetTemplateChild("NumberPanelItemsRepeater") as ItemsRepeater;
NumberPanelCurrentPageIdentifier = GetTemplateChild("NumberPanelCurrentPageIdentifier") as Rectangle;
// Attach TestHooks
FirstPageButtonTestHook = FirstPageButton;
PreviousPageButtonTestHook = PreviousPageButton;
NextPageButtonTestHook = NextPageButton;
LastPageButtonTestHook = LastPageButton;
NumberBoxDisplayTestHook = PagerNumberBox;
ComboBoxDisplayTestHook = PagerComboBox;
NumberPanelDisplayTestHook = PagerNumberPanel;
NumberPanelCurrentPageIdentifierTestHook = NumberPanelCurrentPageIdentifier;
// Attach click events
if (FirstPageButton != null)
{
FirstPageButton.Click += (s, e) => { SelectedIndex = 1; };
}
if (PreviousPageButton != null)
{
PreviousPageButton.Click += (s, e) => { SelectedIndex -= 1; };
}
if (NextPageButton != null)
{
NextPageButton.Click += (s, e) => { SelectedIndex += 1; };
}
if (LastPageButton != null)
{
LastPageButton.Click += (s, e) => { SelectedIndex = NumberOfPages; };
}
if (PagerComboBox != null)
{
PagerComboBox.SelectedIndex = SelectedIndex - 1;
PagerComboBox.SelectionChanged += (s, e) => { OnComboBoxSelectionChanged(); };
}
if (PagerNumberPanel != null)
{
UpdateNumberPanel();
PagerNumberPanel.ElementPrepared += OnElementPrepared;
PagerNumberPanel.ElementClearing += OnElementClearing;
}
OnPagerDisplayModeChanged();
templateApplied = true;
// This is for the initial page being loaded whatever page that might be.
PageChanged?.Invoke(this, new PageChangedEventArgs(PreviousPageIndex, SelectedIndex - 1));
}
protected virtual void OnPageChanged(EventArgs e)
{
if (PageChanged != null)
{
PageChanged.Invoke(this, e);
}
}
public void SwitchTab(string targetPath)
{
//called by ButtonInfo.cs when clicked. "targetPath" is usually a "PathHead"
foreach (TabPage tabPage in tabControl.Controls)
{
var nav = GetINavigatableFromControl(tabPage);
if (nav.PathHead == targetPath)
{
if (CurrentNavigatable == nav)
{
Path = targetPath; // double click on forum go to forum home
}
else
{
string lastPath;
if (lastTabPaths.TryGetValue(nav, out lastPath))
{
targetPath = lastPath; //go to current page of the tab
}
Path = targetPath;
}
return;
}
}
Path = targetPath;
PageChanged?.Invoke(Path);
}
protected async Task OnPaginationItemClick(string pageName)
{
if (int.TryParse(pageName, out var pageNumber))
{
CurrentPage = pageNumber;
}
else
{
if (pageName == "prev")
{
CurrentPage--;
if (CurrentPage < 1)
{
CurrentPage = 1;
}
}
else if (pageName == "next")
{
CurrentPage++;
if (CurrentPage > LastPage)
{
CurrentPage = LastPage;
}
}
}
await PageChanged.InvokeAsync(new DataGridPageChangedEventArgs( CurrentPage, PageSize ));
if (ReadData.HasDelegate)
{
await HandleReadData();
}
}
public void NavigateForward()
{
if (CanGoForward)
{
GoForward();
PageChanged?.Invoke(Path);
}
}
public void NavigateBack()
{
if (CanGoBack)
{
GoBack();
PageChanged?.Invoke(Path);
}
}
public SlideBox()
{
InitializeComponent();
panel.Size = Size;
panel.Left = panel.Top = 0;
panel.AutoScroll = false;
panel.AutoSize = true;
this.ControlAdded += (s, e) =>
{
AddPage(e.Control);
};
this.Resize += (s, e) =>
{
// 挂起UI
this.SuspendLayout();
panel.Size = Size;
if (pageIndex != -1)
{
foreach (Control page in panel.Controls)
{
page.Size = panel.Size;
}
panel.Left = -panel.Controls[pageIndex].Left;
}
// 恢复UI
this.ResumeLayout();
};
this.SizeChanged += (s, e) =>
{
foreach (Control c in panel.Controls)
{
c.Size = Size;
}
};
timer.Enabled = false;
timer.Interval = 10;
timer.Tick += (s, e) =>
{
// 当前位置与目标位置相差距离小于最小移动距离时，结束运动
if (Math.Abs(panel.Left - targetLocation) <= ReviseValue)
{
panel.Left = targetLocation;
timer.Enabled = false;
PageChanged?.Invoke(this, new PageChangedEventArgs(pageIndex));
return;
}
int v = (panel.Left - targetLocation) / Rate;
if (Math.Abs(v) < ReviseValue)
{
v = ReviseValue * (v < 0 ? -1 : 1);
}
panel.Left = panel.Left - v;
};
}
private void FirePageChanged()
{
EventArgs args = new EventArgs();
if (PageChanged != null)
{
PageChanged.Invoke(this, args);
}
}
private void btnNextPage_Click(object sender, EventArgs e)
{
if (_currentPage < MaxNumberOfPages - 1)
{
_currentPage += 1;
ChangeCurrentPageLabel(_currentPage);
PageChanged?.Invoke(this, new PageChangedArgs(_currentPage));
}
}
private void btnPreviousPage_Click(object sender, EventArgs e)
{
if (_currentPage > 0)
{
_currentPage -= 1;
ChangeCurrentPageLabel(_currentPage);
PageChanged?.Invoke(this, new PageChangedArgs(_currentPage));
}
}
public void SwapTo(IList <PageItem> pages, int page)
{
SetPage(0, 1);
SetPage(1, page, pages);
SwapAnimate(true, () =>
{
CurrentPage = page;
PageChanged?.Invoke(this, page, pages[0].Begin);
});
}
private void OnSelectedIndexChanged()
{
if (PagerComboBox != null)
{
PagerComboBox.SelectedIndex = SelectedIndex - 1;
}
DisablePageButtonsOnEdge();
UpdateNumberPanel();
PageChanged?.Invoke(this, new PageChangedEventArgs(PreviousPageIndex, SelectedIndex - 1));
}
protected virtual void OnPageChanged(int pageNo)
{
try
{
PageChanged?.Invoke(pageNo);
}
catch (Exception)
{
//ignore
}
}
/// <summary>
/// Tells the application to load a specific <see cref="Page"/>
/// </summary>
/// <param name="ID">The ID of the <see cref="Page"/> to load</param>
public static void LoadPage(string ID)
{
try {
PageChanged?.Invoke(GetPage(ID), ID);
history.Push(ID);
Logging.Write($"Changed to page \"{ID}\"", "Paging");
} catch (ArgumentNullException) {
Logging.Write(string.Format(LOAD_NULL_PAGE_FORMAT, Assembly.GetCallingAssembly().GetName().Name, Environment.StackTrace), "Paging", LogLevel.Fatal);
} catch (KeyNotFoundException) {
Logging.Write(string.Format(LOAD_INVALID_PAGE_FORMAT, Assembly.GetCallingAssembly().GetName().Name, ID, Environment.StackTrace), "Paging", LogLevel.Fatal);
}
}
/// <summary>
/// 尾页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void last_hyperlinkLabelControl_Click(object sender, EventArgs e)
{
if (_pageTotal == 0)
{
curPage_labelControl.Text = "1/1 页";
return;
}
_pageIndex = (_pageTotal % _pageSize) == 0 ? PageTotal / _pageSize : (PageTotal / _pageSize) + 1;
curPage_labelControl.Text = string.Format("{0}/{0} 页", _pageIndex);
PageChanged?.Invoke(sender, e);
}
public void Back(object page = null)
{
if (page is TrainsPlanViewModel || page is DiaryTrainsViewModel)
{
PageChanged?.Invoke(typeof(StartPage));
return;
}
_ = _pages.Pop();
var previouspage = _pages.Peek();
PageChanged?.Invoke(previouspage.GetType());
}
private void FirePageChangedEvent()
{
int startIndex = (CurrentPage - 1) * ItemsPerPage;
int length = ItemsPerPage;
int remain = numberOfItem - startIndex;
if (remain < length)
{
length = remain;
}
PageChanged?.Invoke(startIndex, length);
}
/// <summary>
/// Navigiert zu einer Seite.
/// </summary>
/// <param name="resourceKey">Schlüssel aus dem ResourceDictionary der Seite, zu der navigiert werden soll</param>
public void NavigateTo(string resourceKey)
{
if (!resourceKey.Equals(String.Empty))
{
var page = App.Current.FindResource(resourceKey) as Page;
PageChanged?.Invoke(this, new NavigationEventArgs()
{
ZielPage = page,
});
(App.Current.FindResource("MainWindowVM") as MainWindowVM).CurrentPage = page;
PageChangedFinished?.Invoke(this, new EventArgs());
}
}
/// <summary>
/// Set the current page index to a specific value. Invokes the PageChanged event.
/// </summary>
/// <param name="requestedPageIndex">The page index to move to. Gets clamped between 0 and the number of pages.</param>
/// <returns>True if the page was updated, false if it wasn't.</returns>
public bool SetPage(int requestedPageIndex)
{
int oldPageIndex = PageIndex;
PageIndex = Math.Clamp(requestedPageIndex, 0, NumPages - 1);
if (oldPageIndex != PageIndex)
{
PageChanged?.Invoke(GetPageItems());
return(true);
}
return(false);
}
public async Task ChangePage(bool forwards)
{
if (forwards)
{
await RunPageChange(Width * -1);
}
else
{
await RunPageChange(Width);
}
PageChanged?.Invoke(this, new EventArgs());
ShowControls();
}
/// <summary>
/// Changed the current page, clamps to pages limits
/// </summary>
/// <param name="newPage">New page number, starting from 0</param>
public void ChangePage(int newPage)
{
newPage = Mathf.Clamp(newPage, 0, PagesCount - 1);
if (CurrentPage == newPage)
{
return;
}
currentPage = newPage;
var startElement = CurrentPage * elementsPerPage;
for (var i = 0; i < elementsPerPage; i++)
{
currentPageElements[i] = startElement + i < elements.Length ? elements[startElement + i] : null;
}
PageChanged?.Invoke(CurrentPage, currentPageElements);
}
private void vScrollBar_ValueChanged(object sender, EventArgs e)
{
int inc = (last - vScrollBar.Value) * 2;
last = vScrollBar.Value;
if (y8Selected != -1)
{
y8Selected += inc;
}
if (y8LastHover != -1)
{
y8LastHover += inc;
}
UpdateImage();
PageChanged?.Invoke(this, EventArgs.Empty);
}
private void next_hyperlinkLabelControl_Click(object sender, EventArgs e)
{
if (_pageTotal == 0)
{
curPage_labelControl.Text = "1/1 页";
return;
}
int result = (_pageTotal % _pageSize) == 0 ? PageTotal / _pageSize : (PageTotal / _pageSize) + 1;
if (_pageIndex >= result)
{
return;
}
++_pageIndex;
curPage_labelControl.Text = string.Format("{0}/{1} 页", _pageIndex, result);
PageChanged?.Invoke(sender, e);
}
/// <summary>
/// Called if the page change button is clicked.
/// </summary>
/// <param name="sender">Sender that raised the event.</param>
/// <param name="e">The event args.</param>
public void ButtonClick(object sender, EventArgs e)
{
if (PageChanged != null)
{
Button button = sender as Button;
if (button == null)
{
return;
}
int page = Convert.ToInt32(button.Text);
var eventArgs = new PageSelectedEventArgs
{
SelectedPage = page
};
PageChanged.Invoke(this, eventArgs);
}
}
public void SetFile(PVFile newFile)
{
if (pvFile != null)
{
pvFile.Dispose();
}
pvFile = newFile;
if (pvFile == null)
{
FileChanged.Invoke(this, new FileChangedEventArgs());
PageChanged.Invoke(this, new PageChangedEventArgs());
}
else
{
FileChanged.Invoke(this, new FileChangedEventArgs(pvFile.FileName, pvFile.PageCount));
SetPage(1);
//SetPage(currentPage < 1 ? 1 : currentPage > pvFile.PageCount ? pvFile.PageCount : currentPage);
}
}
private void Paginator_MouseClick(object sender, MouseEventArgs e)
{
if (e.X < 15)
{
if (PageChanged != null && currentPage > 0)
{
PageChanged.Invoke(this, PageChange.Back);
currentPage--;
Refresh();
}
}
if (e.X > (Width - 15))
{
if (PageChanged != null && (currentPage + 1) < totalPages)
{
PageChanged.Invoke(this, PageChange.Next);
currentPage++;
Refresh();
}
}
}
