cyf
72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
namespace Cef3
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{
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using Cef3.Interop;
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/// <summary>
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/// Implement this interface to handle events related to focus. The methods of
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/// this class will be called on the UI thread.
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/// </summary>
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public abstract unsafe partial class CefFocusHandler
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{
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private void on_take_focus(cef_focus_handler_t* self, cef_browser_t* browser, int next)
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{
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CheckSelf(self);
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var m_browser = CefBrowser.FromNative(browser);
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OnTakeFocus(m_browser, next != 0);
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}
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/// <summary>
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/// Called when the browser component is about to loose focus. For instance, if
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/// focus was on the last HTML element and the user pressed the TAB key. |next|
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/// will be true if the browser is giving focus to the next component and false
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/// if the browser is giving focus to the previous component.
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/// </summary>
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protected virtual void OnTakeFocus(CefBrowser browser, bool next)
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{
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}
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private int on_set_focus(cef_focus_handler_t* self, cef_browser_t* browser, CefFocusSource source)
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{
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CheckSelf(self);
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var m_browser = CefBrowser.FromNative(browser);
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return OnSetFocus(m_browser, source) ? 1 : 0;
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}
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/// <summary>
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/// Called when the browser component is requesting focus. |source| indicates
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/// where the focus request is originating from. Return false to allow the
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/// focus to be set or true to cancel setting the focus.
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/// </summary>
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protected virtual bool OnSetFocus(CefBrowser browser, CefFocusSource source)
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{
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return false;
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}
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private void on_got_focus(cef_focus_handler_t* self, cef_browser_t* browser)
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{
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CheckSelf(self);
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var m_browser = CefBrowser.FromNative(browser);
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OnGotFocus(m_browser);
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}
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/// <summary>
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/// Called when the browser component has received focus.
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/// </summary>
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protected virtual void OnGotFocus(CefBrowser browser)
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{
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}
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}
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}
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