xenadmin/XenAdmin/Controls/Common/SearchTextBox.cs
Konstantina Chremmou 8a6a579402 CP-20425: Use static images everywhere an image is assigned programmatically.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
2020-07-18 07:49:27 +01:00

247 lines
7.8 KiB
C#

/* Copyright (c) Citrix Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
using XenAdmin.Core;
namespace XenAdmin.Controls
{
public partial class SearchTextBox : UserControl
{
/// <summary>
/// If true the TextChanged event should not be fired. This is the case when the text
/// changes from Messages.SEARCH_TEXT_BOX_INITIAL_TEXT to string.Empty and vice-versa.
/// </summary>
private bool m_isTextChangeSilent;
public SearchTextBox()
{
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.ResizeRedraw, true);
SetStyle(ControlStyles.UserPaint, true);
InitializeComponent();
textBox1.Text = Messages.SEARCH_TEXT_BOX_INITIAL_TEXT;
textBox1.LostFocus += textBox1_LostFocus;
textBox1.GotFocus += textBox1_GotFocus;
SetTextGrey(true);
}
public void Reset()
{
textBox1_LostFocus(this, EventArgs.Empty);
}
private void SetTextGrey(bool grey)
{
if (grey)
{
textBox1.ForeColor = Color.Gray;
textBox1.Font = new Font(textBox1.Font, FontStyle.Italic);
}
else
{
textBox1.ForeColor = SystemColors.WindowText;
textBox1.Font = new Font(textBox1.Font, FontStyle.Regular);
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
Graphics g = e.Graphics;
var borderRect = new Rectangle(0, 0, Width, Height);
if (Application.RenderWithVisualStyles)
{
TextBoxRenderer.DrawTextBox(g, borderRect, TextBoxState.Selected);
}
else
{
ControlPaint.DrawBorder3D(g, borderRect);
g.FillRectangle(Brushes.White, new Rectangle(2, 2, Width - 4, Height - 4));
}
g.TextRenderingHint = Drawing.TextRenderingHint;
// Draw magnifying glass or cross icon
Image image = textBox1.Text.Length > 0 && textBox1.Text != Messages.SEARCH_TEXT_BOX_INITIAL_TEXT
? Images.StaticImages.cross
: Images.StaticImages._000_Search_h32bit_16;
g.DrawImage(image, new Rectangle(textBox1.Width + textBox1.Left, Height / 2 - image.Height / 2, image.Width, image.Height));
}
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
const int leftMargin = 4;
const int iconWidth = 20;
textBox1.Location = new Point(leftMargin, Height / 2 - textBox1.Height / 2);
textBox1.Size = new Size(Width - leftMargin - iconWidth, textBox1.Height);
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
Invalidate();
if (!m_isTextChangeSilent)
OnTextChanged(EventArgs.Empty);
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
Refresh();
}
private void textBox1_LostFocus(object sender, EventArgs e)
{
if (textBox1.Text.Length == 0)
{
m_isTextChangeSilent = true;
textBox1.Text = Messages.SEARCH_TEXT_BOX_INITIAL_TEXT;
m_isTextChangeSilent = false;
SetTextGrey(true);
}
Refresh();
}
private void textBox1_GotFocus(object sender, EventArgs e)
{
if (textBox1.Text == Messages.SEARCH_TEXT_BOX_INITIAL_TEXT)
{
m_isTextChangeSilent = true;
textBox1.Text = string.Empty;
m_isTextChangeSilent = false;
SetTextGrey(false);
}
Refresh();
}
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[Browsable(false)]
public override string Text
{
get
{
return textBox1.Text != Messages.SEARCH_TEXT_BOX_INITIAL_TEXT ? textBox1.Text : string.Empty;
}
set
{
if (value == "" && !this.Focused)
{
textBox1.Text = Messages.SEARCH_TEXT_BOX_INITIAL_TEXT;
SetTextGrey(true);
}
else
{
textBox1.Text = value;
SetTextGrey(false);
}
}
}
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[Browsable(false)]
public bool Matches(string name)
{
return name.IndexOf(this.Text, StringComparison.CurrentCultureIgnoreCase) >= 0;
}
protected override void OnTextChanged(EventArgs e)
{
base.OnTextChanged(e);
var handler = this.TextChanged;
if (handler != null)
{
handler(this, e);
}
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
if (e.X > textBox1.Left + textBox1.Width)
{
if (textBox1.Text.Length > 0)
{
textBox1.Text = string.Empty;
}
else
{
textBox1.Focus();
}
Refresh();
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
Cursor = e.X > textBox1.Left + textBox1.Width ? Cursors.Hand : Cursors.IBeam;
}
[Browsable(true)]
public new event EventHandler TextChanged;
private bool wasFocused;
private int cursorLoc;
public void SaveState()
{
wasFocused = textBox1.ContainsFocus;
cursorLoc = textBox1.SelectionStart;
}
public void RestoreState()
{
if (!wasFocused || ContainsFocus)
return;
textBox1.Select();
textBox1.Select(cursorLoc, 0);
}
}
}