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Grid.razor.cs
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1710 lines (1523 loc) · 55.9 KB
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#region using statements
using DataJuggler.Blazor.Components.Interfaces;
using DataJuggler.Blazor.Components.Objects;
using DataJuggler.Blazor.Components.Util;
using DataJuggler.Cryptography;
using DataJuggler.Excelerate;
using DataJuggler.UltimateHelper;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Threading.Tasks;
using System.Reflection;
#endregion
namespace DataJuggler.Blazor.Components
{
#region class Grid
/// <summary>
/// This class represents a Grid to display and edit column values.
/// </summary>
public partial class Grid : ComponentBase, IBlazorComponent, IBlazorComponentParent
{
#region Private Variables
private Color borderColor;
private string borderStyle;
private double borderWidth;
private ButtonClickedHandler buttonClickHandler;
private List<ImageButton> buttons;
private string className;
private string columnHeaderClassName;
private Color columnHeaderColor;
private double columnHeaderHeight;
private string columnHeaderStyle;
private string columnHeaderTextClassName;
private List<Column> columns;
private bool columnsBuilt;
private string containerStyle;
private bool editMode;
private Row editRow;
private Guid editRowId;
private bool enableClick;
private bool enableDoubleClick;
private int externalId;
private string externalIdDescription;
private double fontSize;
private string fontSizeUnit;
private Color gridBackColor;
private string gridBorderStyle;
private RenderFragment<Grid> gridColumns;
private List<GridColumn> gridColumnDefs;
private string gridStyle;
private string headerClassName;
private Color headerColor;
private double headerHeight;
private string headerStyle;
private string headerText;
private double height;
private string heightUnit;
private double left;
private string name;
private bool notifyParentOnDoubleClick;
private string overflowX;
private string overflowY;
private IBlazorComponentParent parent;
private string position;
private string rowContent;
private double rowContentHeight;
private List<Row> rows;
private string scrollStyle;
private TextBoxComponent setFocusEditor;
private bool showColumnHeaders;
private bool showFilterRow;
private bool showHeader;
private bool stickyHeader;
private double top;
private string unit;
private bool visible;
private string visibility;
private double width;
// New Scrollbar Support
private double scrollBarRadius;
private Color scrollBarThumbColor;
private Color scrollBarThumbHoverColor;
private Color scrollBarTrackBorderColor;
private Color scrollBarTrackColor;
private double scrollBarWidth;
#endregion
#region Constructor
/// <summary>
/// Create a new instance of a Grid object.
/// </summary>
public Grid()
{
// Perform initializations for this object
Init();
}
#endregion
#region Events
#region Enter(KeyboardEventArgs e)
/// <summary>
/// event is fired when Enter
/// </summary>
public void Enter(KeyboardEventArgs e)
{
if (e.Code == "Enter" || e.Code == "NumpadEnter")
{
// Exit
EditMode = false;
// if the value for HasEditRow is true
if (HasEditRow)
{
// Set to false
EditRow.EditMode = false;
// Reload the screen to exit read only mode
Refresh();
}
}
}
#endregion
#region OnAfterRenderAsync(bool firstRender)
/// <summary>
/// This method is used to verify a user
/// </summary>
/// <param name="firstRender"></param>
/// <returns></returns>
protected async override Task OnAfterRenderAsync(bool firstRender)
{
try
{
// if the value for HasSetFocusEditor is true
if (HasSetFocusEditor)
{
// Set Focus
SetFocusEditor.SetFocus();
}
}
catch (Exception error)
{
// Attempt to trap
DebugHelper.WriteDebugError("OnAfterRenderAsync", "Grid.razor.cs", error);
}
// call the base
await base.OnAfterRenderAsync(firstRender);
}
#endregion
#region OnClick(Row row, int columnNumber)
/// <summary>
/// On Double Click
/// </summary>
public void OnClick(Row row, int columnNumber)
{
// if the row exists
if (NullHelper.Exists(row))
{
// if NotifyParent is true
if (HasParent)
{
// Create a message
Message message = new Message();
// Set the parent
message.Text = "A row was clicked with Id " + row.ExternalId + " " + row.ExternalIdDescription;
message.Id = row.ExternalId;
message.Sender = this;
// Notify the parent
Parent.ReceiveData(message);
}
}
// Update the page in EditMode
Refresh();
}
#endregion
#region OnDoubleClick(Row row, int columnNumber)
/// <summary>
/// On Double Click
/// </summary>
public void OnDoubleClick(Row row, int columnNumber)
{
// if the row exists
if (NullHelper.Exists(row))
{
// if NotifyParent is true
if ((NotifyParentOnDoubleClick) && (HasParent))
{
// Create a message
Message message = new Message();
// Set the parent
message.Text = "A row was double clicked with Id " + row.ExternalId + " " + row.ExternalIdDescription;
message.Id = row.ExternalId;
message.Sender = this;
// Notify the parent
Parent.ReceiveData(message);
}
else
{
// Find the column
Column column = row.FindColumnByNumber(columnNumber);
// If the column object exists
if (NullHelper.Exists(column))
{
// Set the column to focus
column.SetFocusOnFirstRender = true;
// Set the column to EditMode
column.EditMode = true;
}
// Set the row into EditMode so the edit control is displayed.
// to do: Figure out the Edit Control.
row.EditMode = true;
// turn on EditMode
EditMode = true;
}
}
// Update the page in EditMode
Refresh();
}
#endregion
#endregion
#region Methods
#region ConvertGridColumnsToColumns()
/// <summary>
/// Converts the Grid Columns To Columns
/// </summary>
public void ConvertGridColumnsToColumns()
{
// locals
Column column = null;
int index = -1;
// if the Columns exist
if (HasGridColumnDefs)
{
// Create the Columns object
Columns = new List<Column>();
// Iterate the collection of GridColumn objects
foreach (GridColumn gridColumn in GridColumnDefs)
{
// Increment the value for index
index++;
// Create a new instance of a 'column' object.
column = new Column();
// map properties
column.BorderWidth = gridColumn.BorderWidth;
column.ColumnName = gridColumn.Name;
column.ColumnNumber = gridColumn.ColumnNumber;
column.Caption = gridColumn.Caption;
column.ClassName = gridColumn.ClassName;
column.DataType = gridColumn.DataType;
column.FieldName = gridColumn.FieldName;
column.Format = gridColumn.Format;
column.Height = gridColumn.Height;
column.PrimaryKey = gridColumn.PrimaryKey;
column.Width = gridColumn.Width;
// Set these values
column.Index = index;
column.ColumnNumber = index + 1;
// Column.Visible doesn’t exist — use Hidden instead
column.Hidden = !gridColumn.Visible;
// Add this column to the collection
Columns.Add(column);
}
// So this doesn't fire again
ColumnsBuilt = true;
}
}
#endregion
#region Init()
/// <summary>
/// This method performs initializations for this object.
/// </summary>
public void Init()
{
// Units have to be first
Unit = "px";
HeightUnit = "px";
// Create
BorderColor = Color.Gray;
BorderWidth = 1;
BorderStyle = "solid";
Buttons = new List<ImageButton>();
Columns = new List<Column>();
ColumnHeaderColor = Color.SteelBlue;
ColumnHeaderHeight = 32;
ColumnHeaderTextClassName = "down6";
FontSize = 12;
FontSizeUnit="px";
GridBackColor = Color.White;
GridColumnDefs = new List<GridColumn>();
HeaderColor = Color.SteelBlue;
HeaderHeight = 24;
Height = 240;
Position = "relative";
StickyHeader = true;
Width = 400;
OverflowX = "hidden";
OverflowY = "auto";
Visible = true;
// default values for the Grid.
ScrollBarWidth = 10;
ScrollBarTrackColor = Color.LightGray;
ScrollBarThumbColor = Color.LightSteelBlue;
ScrollBarThumbHoverColor = Color.DimGray;
ScrollBarRadius = 6;
ScrollBarTrackBorderColor = Color.DarkSlateBlue;
}
#endregion
#region ReceiveData(Message message)
/// <summary>
/// method returns the Data
/// </summary>
public void ReceiveData(Message message)
{
// If the message object exists
if (NullHelper.Exists(message))
{
if ((message.Text == "EnterPressed") && (HasParent))
{
// Set the Sender
message.Sender = this;
// raise this up to the parent to Save
Parent.ReceiveData(message);
}
else if ((message.Text == "EscapePressed") && (HasParent))
{
// Set the Sender
SetFocusEditor = null;
// Exit edit mode
EditMode = false;
// if the EditRow exists
if (HasEditRow)
{
// Exit EditMode
EditRow.EditMode = false;
// Erase
EditRow = null;
}
// raise this up to the parent to Save
Parent.ReceiveData(message);
// Escape = exit editor mode
Refresh();
}
else if (message.HasParameters)
{
// iterate the parameters
foreach (NamedParameter parameter in message.Parameters)
{
// if this is the Rows collection
if (parameter.Name == "Rows")
{
// cast the value as a List of Row objects.
Rows = parameter.Value as List<Row>;
}
// if this is the Columns collection
if (parameter.Name == "Columns")
{
// cast the value as a List of Row objects.
Columns = parameter.Value as List<Column>;
}
}
}
// Display the Data
Refresh();
}
}
#endregion
#region Refresh()
/// <summary>
/// method Refresh
/// </summary>
public void Refresh()
{
// Update the UI
InvokeAsync(() =>
{
StateHasChanged();
});
}
#endregion
#region RefreshAsync()
/// <summary>
/// Asynchronously refreshes the UI.
/// </summary>
public async Task RefreshAsync()
{
// Update the UI
await InvokeAsync(StateHasChanged);
}
#endregion
#region Register(IBlazorComponent component)
/// <summary>
/// This method is used to keep track of the current editors.
/// When Save is called, these editors have to be removed.
/// </summary>
public void Register(IBlazorComponent component)
{
// If the component object exists
if (NullHelper.Exists(component))
{
if (component is TextBoxComponent)
{
// Test if this is a TextBoxComponent
TextBoxComponent TextBoxComponent = component as TextBoxComponent;
// if this is the control to set focus to
if ((NullHelper.Exists(TextBoxComponent)) && (TextBoxComponent.SetFocusOnFirstRender))
{
// Set the SetFocusEditor
SetFocusEditor = TextBoxComponent;
}
}
else if (component is ImageButton)
{
// cast the IBlazorComponent as an ImageButton
ImageButton button = component as ImageButton;
// Add this button
Buttons.Add(button);
}
else if (component is GridColumn tempGridColumn)
{
// if the Columns have not been Built
if (!ColumnsBuilt)
{
if (ListHelper.HasOneOrMoreItems(GridColumnDefs))
{
if (!GridColumnDefs.Contains(tempGridColumn))
{
// Add this column
GridColumnDefs.Add(tempGridColumn);
}
}
else
{
// Add this column
GridColumnDefs.Add(tempGridColumn);
}
// if this is the last column
if (tempGridColumn.LastColumn)
{
// Create the HeaderColumns from the GridColumns
ConvertGridColumnsToColumns();
}
}
}
}
}
#endregion
#region SetVisible(bool visible)
/// <summary>
/// returns the Visible
/// </summary>
public void SetVisible(bool visible)
{
// Set to Visible
this.Visible = visible;
// Update
Refresh();
}
#endregion
#endregion
#region Properties
#region BorderColor
/// <summary>
/// This property gets or sets the value for 'BorderColor'.
/// </summary>
[Parameter]
public Color BorderColor
{
get { return borderColor; }
set { borderColor = value; }
}
#endregion
#region BorderStyle
/// <summary>
/// This property gets or sets the value for 'BorderStyle'.
/// </summary>
public string BorderStyle
{
get { return borderStyle; }
set { borderStyle = value; }
}
#endregion
#region BorderWidth
/// <summary>
/// This property gets or sets the value for 'BorderWidth'.
/// </summary>
[Parameter]
public double BorderWidth
{
get { return borderWidth; }
set { borderWidth = value; }
}
#endregion
#region BorderWidthStyle
/// <summary>
/// This read only property returns the value of BorderWidth + Unit
/// </summary>
public string BorderWidthStyle
{
get
{
// initial value
string borderWidthStyle = borderWidth + Unit;
// return value
return borderWidthStyle;
}
}
#endregion
#region Buttons
/// <summary>
/// This property gets or sets the value for 'Buttons'.
/// </summary>
public List<ImageButton> Buttons
{
get { return buttons; }
set { buttons = value; }
}
#endregion
#region ClassName
/// <summary>
/// This property gets or sets the value for 'ClassName'.
/// </summary>
[Parameter]
public string ClassName
{
get { return className; }
set { className = value; }
}
#endregion
#region ButtonClickHandler
/// <summary>
/// This property gets or sets the value for 'ClickHandler'.
/// </summary>
public ButtonClickedHandler ButtonClickHandler
{
get { return buttonClickHandler; }
set { buttonClickHandler = value; }
}
#endregion
#region ColumnHeaderClassName
/// <summary>
/// This property gets or sets the value for 'ColumnHeaderClassName'.
/// </summary>
[Parameter]
public string ColumnHeaderClassName
{
get { return columnHeaderClassName; }
set { columnHeaderClassName = value; }
}
#endregion
#region ColumnHeaderColor
/// <summary>
/// This property gets or sets the value for 'ColumnHeaderColor'.
/// </summary>
[Parameter]
public Color ColumnHeaderColor
{
get { return columnHeaderColor; }
set { columnHeaderColor = value; }
}
#endregion
#region ColumnHeaderHeight
/// <summary>
/// This property gets or sets the value for 'ColumnHeaderHeight'.
/// </summary>
[Parameter]
public double ColumnHeaderHeight
{
get { return columnHeaderHeight; }
set { columnHeaderHeight = value; }
}
#endregion
#region ColumnHeaderHeightStyle
/// <summary>
/// This read only property returns the value of ColumnHeaderHeight + HeightUnit
/// </summary>
public string ColumnHeaderHeightStyle
{
get
{
// initial value
string columnHeaderHeightStyle = ColumnHeaderHeight + HeightUnit;
// return value
return columnHeaderHeightStyle;
}
}
#endregion
#region ColumnHeaderStyle
/// <summary>
/// This property gets or sets the value for 'ColumnHeaderStyle'.
/// </summary>
public string ColumnHeaderStyle
{
get { return columnHeaderStyle; }
set { columnHeaderStyle = value; }
}
#endregion
#region ColumnHeaderTextClassName
/// <summary>
/// This property gets or sets the value for 'ColumnHeaderTextClassName'.
/// </summary>
[Parameter]
public string ColumnHeaderTextClassName
{
get { return columnHeaderTextClassName; }
set { columnHeaderTextClassName = value; }
}
#endregion
#region Columns
/// <summary>
/// This property gets or sets the value for 'Columns'.
/// </summary>
public List<Column> Columns
{
get { return columns; }
set { columns = value; }
}
#endregion
#region ColumnsBuilt
/// <summary>
/// This property gets or sets the value for 'ColumnsBuilt'.
/// </summary>
public bool ColumnsBuilt
{
get { return columnsBuilt; }
set { columnsBuilt = value; }
}
#endregion
#region ContainerStyle
/// <summary>
/// This property gets or sets the value for 'ContainerStyle'.
/// </summary>
public string ContainerStyle
{
get { return containerStyle; }
set { containerStyle = value; }
}
#endregion
#region EditMode
/// <summary>
/// This property gets or sets the value for 'EditMode'.
/// </summary>
public bool EditMode
{
get { return editMode; }
set { editMode = value; }
}
#endregion
#region EditRow
/// <summary>
/// This property gets or sets the value for 'EditRow'.
/// </summary>
public Row EditRow
{
get { return editRow; }
set { editRow = value; }
}
#endregion
#region EditRowId
/// <summary>
/// This property gets or sets the value for 'EditRowId'.
/// </summary>
public Guid EditRowId
{
get { return editRowId; }
set { editRowId = value; }
}
#endregion
#region EnableClick
/// <summary>
/// This property gets or sets the value for 'EnableClick'.
/// </summary>
[Parameter]
public bool EnableClick
{
get { return enableClick; }
set { enableClick = value; }
}
#endregion
#region EnableDoubleClick
/// <summary>
/// This property gets or sets the value for 'EnableDoubleClick'.
/// </summary>
[Parameter]
public bool EnableDoubleClick
{
get { return enableDoubleClick; }
set { enableDoubleClick = value; }
}
#endregion
#region ExternalId
/// <summary>
/// This property gets or sets the value for 'ExternalId'.
/// </summary>
[Parameter]
public int ExternalId
{
get { return externalId; }
set { externalId = value; }
}
#endregion
#region ExternalIdDescription
/// <summary>
/// This property gets or sets the value for 'ExternalIdDescription'.
/// </summary>
[Parameter]
public string ExternalIdDescription
{
get { return externalIdDescription; }
set { externalIdDescription = value; }
}
#endregion
#region FontSize
/// <summary>
/// This property gets or sets the value for 'FontSize'.
/// </summary>
[Parameter]
public double FontSize
{
get { return fontSize; }
set { fontSize = value; }
}
#endregion
#region FontSizeStyle
/// <summary>
/// This property gets or sets the value for 'FontSizeStyle'.
/// </summary>
public string FontSizeStyle
{
get
{
// set the return value
string fontSizeStyle = FontSize + FontSizeUnit;
// return value
return fontSizeStyle;
}
}
#endregion
#region FontSizeUnit
/// <summary>
/// This property gets or sets the value for 'FontSizeUnit'.
/// </summary>
[Parameter]
public string FontSizeUnit
{
get { return fontSizeUnit; }
set { fontSizeUnit = value; }
}
#endregion
#region GridBackColor
/// <summary>
/// This property gets or sets the value for 'GridBackColor'.
/// </summary>
[Parameter]
public Color GridBackColor
{
get { return gridBackColor; }
set { gridBackColor = value; }
}
#endregion
#region GridBorderStyle
/// <summary>
/// This property gets or sets the value for 'GridBorderStyle'.
/// </summary>
[Parameter]
public string GridBorderStyle
{
get { return gridBorderStyle; }
set { gridBorderStyle = value; }
}
#endregion
#region GridColumnDefs
/// <summary>
/// This property gets or sets the value for 'GridColumnDefs'.
/// </summary>
public List<GridColumn> GridColumnDefs
{
get { return gridColumnDefs; }
set { gridColumnDefs = value; }
}
#endregion
#region GridColumns
/// <summary>
/// This property gets or sets the value for 'GridColumns'.
/// </summary>
[Parameter]
public RenderFragment<Grid> GridColumns
{
get { return gridColumns; }
set { gridColumns = value; }
}
#endregion
#region GridStyle
/// <summary>
/// This property gets or sets the value for 'GridStyle'.
/// </summary>
public string GridStyle
{
get { return gridStyle; }
set { gridStyle = value; }
}
#endregion
#region HasButtons
/// <summary>
/// This property returns true if this object has a 'Buttons'.
/// </summary>
public bool HasButtons
{
get
{
// initial value
bool hasButtons = (this.Buttons != null);
// return value
return hasButtons;
}
}
#endregion
#region HasColumns
/// <summary>
/// This property returns true if this object has a 'Columns'.
/// </summary>
public bool HasColumns
{
get
{
// initial value
bool hasColumns = (ListHelper.HasOneOrMoreItems(Columns));
// return value
return hasColumns;
}
}
#endregion
#region HasEditRow
/// <summary>
/// This property returns true if this object has an 'EditRow'.
/// </summary>
public bool HasEditRow
{
get
{
// initial value
bool hasEditRow = (this.EditRow != null);
// return value
return hasEditRow;
}
}
#endregion
#region HasGridColumns
/// <summary>
/// This property returns true if this object has a 'GridColumns'.
/// </summary>
public bool HasGridColumnDefs
{
get
{
// initial value
bool hasGridColumnDefs = (ListHelper.HasOneOrMoreItems(GridColumnDefs));
// return value
return hasGridColumnDefs;
}
}
#endregion
#region HasHeaderText
/// <summary>
/// This property returns true if the 'HeaderText' exists.
/// </summary>
public bool HasHeaderText
{
get
{
// initial value
bool hasHeaderText = (!String.IsNullOrEmpty(this.HeaderText));
// return value
return hasHeaderText;
}
}
#endregion
#region HasParent
/// <summary>
/// This property returns true if this object has a 'Parent'.
/// </summary>
public bool HasParent
{
get
{
// initial value
bool hasParent = (this.Parent != null);
// return value
return hasParent;
}
}
#endregion
#region HasPrimaryKey
/// <summary>
/// This property returns true if this object has a 'PrimaryKey'.
/// </summary>