Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebParts / AppearanceEditorPart.cs / 1 / AppearanceEditorPart.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls.WebParts {
using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Globalization;
using System.Security.Permissions;
using System.Web.UI;
using System.Web.UI.WebControls;
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class AppearanceEditorPart : EditorPart {
private TextBox _title;
private UnitInput _height;
private UnitInput _width;
private DropDownList _chromeType;
private CheckBox _hidden;
private DropDownList _direction;
private string _titleErrorMessage;
private string _heightErrorMessage;
private string _widthErrorMessage;
private string _chromeTypeErrorMessage;
private string _hiddenErrorMessage;
private string _directionErrorMessage;
private const int TextBoxColumns = 30;
private const int MinUnitValue = 0;
private const int MaxUnitValue = 32767;
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never), Themeable(false)]
public override string DefaultButton {
get { return base.DefaultButton; }
set { base.DefaultButton = value; }
}
private bool HasError {
get {
return (_titleErrorMessage != null || _heightErrorMessage != null ||
_widthErrorMessage != null || _chromeTypeErrorMessage != null ||
_hiddenErrorMessage != null || _directionErrorMessage != null);
}
}
[
WebSysDefaultValue(SR.AppearanceEditorPart_PartTitle),
]
public override string Title {
get {
string s = (string)ViewState["Title"];
return (s != null) ? s : SR.GetString(SR.AppearanceEditorPart_PartTitle);
}
set {
ViewState["Title"] = value;
}
}
public override bool ApplyChanges() {
WebPart webPart = WebPartToEdit;
Debug.Assert(webPart != null);
if (webPart != null) {
EnsureChildControls();
bool allowLayoutChange = webPart.Zone.AllowLayoutChange;
try {
webPart.Title = _title.Text;
}
catch (Exception e) {
_titleErrorMessage = CreateErrorMessage(e.Message);
}
if (allowLayoutChange) {
try {
TypeConverter chromeTypeConverter = TypeDescriptor.GetConverter(typeof(PartChromeType));
webPart.ChromeType = (PartChromeType)chromeTypeConverter.ConvertFromString(_chromeType.SelectedValue);
}
catch (Exception e) {
_chromeTypeErrorMessage = CreateErrorMessage(e.Message);
}
}
try {
TypeConverter directionConverter = TypeDescriptor.GetConverter(typeof(ContentDirection));
webPart.Direction = (ContentDirection)directionConverter.ConvertFromString(_direction.SelectedValue);
}
catch (Exception e) {
_directionErrorMessage = CreateErrorMessage(e.Message);
}
if (allowLayoutChange) {
Unit height = Unit.Empty;
string heightValueString = _height.Value;
if (!String.IsNullOrEmpty(heightValueString)) {
double heightValue;
if (Double.TryParse(_height.Value, NumberStyles.Float | NumberStyles.AllowThousands,
CultureInfo.CurrentCulture, out heightValue)) {
if (heightValue < MinUnitValue) {
_heightErrorMessage = SR.GetString(
SR.EditorPart_PropertyMinValue, MinUnitValue.ToString(CultureInfo.CurrentCulture));
}
else if (heightValue > MaxUnitValue) {
_heightErrorMessage = SR.GetString(
SR.EditorPart_PropertyMaxValue, MaxUnitValue.ToString(CultureInfo.CurrentCulture));
}
else {
height = new Unit(heightValue, _height.Type);
}
}
else {
_heightErrorMessage = SR.GetString(SR.EditorPart_PropertyMustBeDecimal);
}
}
if (_heightErrorMessage == null) {
try {
webPart.Height = (Unit)height;
}
catch (Exception e) {
_heightErrorMessage = CreateErrorMessage(e.Message);
}
}
}
if (allowLayoutChange) {
Unit width = Unit.Empty;
string widthValueString = _width.Value;
if (!String.IsNullOrEmpty(widthValueString)) {
double widthValue;
if (Double.TryParse(_width.Value, NumberStyles.Float| NumberStyles.AllowThousands,
CultureInfo.CurrentCulture, out widthValue)) {
if (widthValue < MinUnitValue) {
_widthErrorMessage = SR.GetString(
SR.EditorPart_PropertyMinValue, MinUnitValue.ToString(CultureInfo.CurrentCulture));
}
else if (widthValue > MaxUnitValue) {
_widthErrorMessage = SR.GetString(
SR.EditorPart_PropertyMaxValue, MaxUnitValue.ToString(CultureInfo.CurrentCulture));
}
else {
width = new Unit(widthValue, _width.Type);
}
}
else {
_widthErrorMessage = SR.GetString(SR.EditorPart_PropertyMustBeDecimal);
}
}
if (_widthErrorMessage == null) {
try {
webPart.Width = (Unit)width;
}
catch (Exception e) {
_widthErrorMessage = CreateErrorMessage(e.Message);
}
}
}
if (allowLayoutChange && webPart.AllowHide) {
try {
webPart.Hidden = _hidden.Checked;
}
catch (Exception e) {
_hiddenErrorMessage = CreateErrorMessage(e.Message);
}
}
}
return !HasError;
}
protected internal override void CreateChildControls() {
ControlCollection controls = Controls;
controls.Clear();
_title = new TextBox();
_title.Columns = TextBoxColumns;
controls.Add(_title);
TypeConverter chromeTypeConverter = TypeDescriptor.GetConverter(typeof(PartChromeType));
_chromeType = new DropDownList();
_chromeType.Items.Add(new ListItem(SR.GetString(SR.PartChromeType_Default),
chromeTypeConverter.ConvertToString(PartChromeType.Default)));
_chromeType.Items.Add(new ListItem(SR.GetString(SR.PartChromeType_TitleAndBorder),
chromeTypeConverter.ConvertToString(PartChromeType.TitleAndBorder)));
_chromeType.Items.Add(new ListItem(SR.GetString(SR.PartChromeType_TitleOnly),
chromeTypeConverter.ConvertToString(PartChromeType.TitleOnly)));
_chromeType.Items.Add(new ListItem(SR.GetString(SR.PartChromeType_BorderOnly),
chromeTypeConverter.ConvertToString(PartChromeType.BorderOnly)));
_chromeType.Items.Add(new ListItem(SR.GetString(SR.PartChromeType_None),
chromeTypeConverter.ConvertToString(PartChromeType.None)));
controls.Add(_chromeType);
TypeConverter directionConverter = TypeDescriptor.GetConverter(typeof(ContentDirection));
_direction = new DropDownList();
_direction.Items.Add(new ListItem(SR.GetString(SR.ContentDirection_NotSet),
directionConverter.ConvertToString(ContentDirection.NotSet)));
_direction.Items.Add(new ListItem(SR.GetString(SR.ContentDirection_LeftToRight),
directionConverter.ConvertToString(ContentDirection.LeftToRight)));
_direction.Items.Add(new ListItem(SR.GetString(SR.ContentDirection_RightToLeft),
directionConverter.ConvertToString(ContentDirection.RightToLeft)));
controls.Add(_direction);
_height = new UnitInput();
controls.Add(_height);
_width = new UnitInput();
controls.Add(_width);
_hidden = new CheckBox();
controls.Add(_hidden);
// We don't need viewstate enabled on our child controls. Disable for perf.
foreach (Control c in controls) {
c.EnableViewState = false;
}
}
protected internal override void OnPreRender(EventArgs e) {
base.OnPreRender(e);
// We want to synchronize the EditorPart to the state of the WebPart on every page load,
// so we stay current if the WebPart changes in the background.
if (Display && Visible && !HasError) {
SyncChanges();
}
}
protected internal override void RenderContents(HtmlTextWriter writer) {
if (Page != null) {
Page.VerifyRenderingInServerForm(this);
}
// HACK: Need this for child controls to be created at design-time when control is inside template
EnsureChildControls();
string[] propertyDisplayNames = new string[] {
SR.GetString(SR.AppearanceEditorPart_Title),
SR.GetString(SR.AppearanceEditorPart_ChromeType),
SR.GetString(SR.AppearanceEditorPart_Direction),
SR.GetString(SR.AppearanceEditorPart_Height),
SR.GetString(SR.AppearanceEditorPart_Width),
SR.GetString(SR.AppearanceEditorPart_Hidden),
};
WebControl[] propertyEditors = new WebControl[] {
_title,
_chromeType,
_direction,
_height,
_width,
_hidden,
};
string[] errorMessages = new string[] {
_titleErrorMessage,
_chromeTypeErrorMessage,
_directionErrorMessage,
_heightErrorMessage,
_widthErrorMessage,
_hiddenErrorMessage,
};
RenderPropertyEditors(writer, propertyDisplayNames, null /* propertyDescriptions */,
propertyEditors, errorMessages);
}
public override void SyncChanges() {
WebPart webPart = WebPartToEdit;
Debug.Assert(webPart != null);
if (webPart != null) {
bool allowLayoutChange = webPart.Zone.AllowLayoutChange;
EnsureChildControls();
_title.Text = webPart.Title;
TypeConverter chromeTypeConverter = TypeDescriptor.GetConverter(typeof(PartChromeType));
_chromeType.SelectedValue = chromeTypeConverter.ConvertToString(webPart.ChromeType);
_chromeType.Enabled = allowLayoutChange;
TypeConverter directionConverter = TypeDescriptor.GetConverter(typeof(ContentDirection));
_direction.SelectedValue = directionConverter.ConvertToString(webPart.Direction);
_height.Unit = webPart.Height;
_height.Enabled = allowLayoutChange;
_width.Unit = webPart.Width;
_width.Enabled = allowLayoutChange;
_hidden.Checked = webPart.Hidden;
_hidden.Enabled = allowLayoutChange && webPart.AllowHide;
}
}
private sealed class UnitInput : CompositeControl {
private TextBox _value;
private DropDownList _type;
private const int TextBoxColumns = 2;
public string Value {
get {
return (_value != null) ? _value.Text : String.Empty;
}
}
public UnitType Type {
get {
return (_type != null) ?
(UnitType)Int32.Parse(_type.SelectedValue, CultureInfo.InvariantCulture) : (UnitType)0;
}
}
public Unit Unit {
set {
EnsureChildControls();
if (value == Unit.Empty) {
_value.Text = String.Empty;
_type.SelectedIndex = 0;
}
else {
_value.Text = value.Value.ToString(CultureInfo.CurrentCulture);
_type.SelectedValue = ((int)value.Type).ToString(CultureInfo.InvariantCulture);
}
}
}
protected internal override void CreateChildControls() {
Controls.Clear();
_value = new TextBox();
_value.Columns = TextBoxColumns;
Controls.Add(_value);
_type = new DropDownList();
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Pixels),
((int)UnitType.Pixel).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Points),
((int)UnitType.Point).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Picas),
((int)UnitType.Pica).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Inches),
((int)UnitType.Inch).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Millimeters),
((int)UnitType.Mm).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Centimeters),
((int)UnitType.Cm).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Percent),
((int)UnitType.Percentage).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Em),
((int)UnitType.Em).ToString(CultureInfo.InvariantCulture)));
_type.Items.Add(new ListItem(SR.GetString(SR.AppearanceEditorPart_Ex),
((int)UnitType.Ex).ToString(CultureInfo.InvariantCulture)));
Controls.Add(_type);
}
protected internal override void Render(HtmlTextWriter writer) {
// Needed for designtime
EnsureChildControls();
_value.ApplyStyle(ControlStyle);
_value.RenderControl(writer);
writer.Write(" ");
_type.ApplyStyle(ControlStyle);
_type.RenderControl(writer);
}
}
}
}
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