energy/cef/types-focus-handler.go

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//----------------------------------------
//
// Copyright © yanghy. All Rights Reserved.
//
// Licensed under Apache License Version 2.0, January 2004
//
// https://www.apache.org/licenses/LICENSE-2.0
//
//----------------------------------------
package cef
import (
"github.com/energye/energy/v2/cef/internal/def"
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"github.com/energye/energy/v2/common/imports"
"github.com/energye/energy/v2/consts"
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"github.com/energye/golcl/lcl"
"github.com/energye/golcl/lcl/api"
"unsafe"
)
// ************************** creates ************************** //
// FocusHandlerRef -> ICefFocusHandler
var FocusHandlerRef focusHandler
type focusHandler uintptr
func (*focusHandler) New() *ICefFocusHandler {
var result uintptr
imports.Proc(def.CefFocusHandlerRef_Create).Call(uintptr(unsafe.Pointer(&result)))
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if result != 0 {
return &ICefFocusHandler{instance: unsafe.Pointer(result)}
}
return nil
}
// ************************** impl ************************** //
// Instance 实例
func (m *ICefFocusHandler) Instance() uintptr {
if m == nil {
return 0
}
return uintptr(m.instance)
}
func (m *ICefFocusHandler) Free() {
if m.instance != nil {
m.base.Free(m.Instance())
m.instance = nil
}
}
func (m *ICefFocusHandler) IsValid() bool {
if m == nil || m.instance == nil {
return false
}
return m.instance != nil
}
func (m *ICefFocusHandler) SetOnTakeFocus(fn onTakeFocus) {
if !m.IsValid() {
return
}
imports.Proc(def.CefFocusHandler_OnTakeFocus).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefFocusHandler) SetOnSetFocus(fn onSetFocus) {
if !m.IsValid() {
return
}
imports.Proc(def.CefFocusHandler_OnSetFocus).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefFocusHandler) SetOnGotFocus(fn onGotFocus) {
if !m.IsValid() {
return
}
imports.Proc(def.CefFocusHandler_OnGotFocus).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
// ************************** events ************************** //
type onTakeFocus func(browser *ICefBrowser, next bool)
type onSetFocus func(browser *ICefBrowser, source consts.TCefFocusSource) bool
type onGotFocus func(browser *ICefBrowser)
func init() {
lcl.RegisterExtEventCallback(func(fn interface{}, getVal func(idx int) uintptr) bool {
getPtr := func(i int) unsafe.Pointer {
return unsafe.Pointer(getVal(i))
}
switch fn.(type) {
case onTakeFocus:
browse := &ICefBrowser{instance: getPtr(0)}
next := api.GoBool(getVal(1))
fn.(onTakeFocus)(browse, next)
case onSetFocus:
browse := &ICefBrowser{instance: getPtr(0)}
source := consts.TCefFocusSource(getVal(1))
result := (*bool)(getPtr(2))
*result = fn.(onSetFocus)(browse, source)
case onGotFocus:
browse := &ICefBrowser{instance: getPtr(0)}
fn.(onGotFocus)(browse)
default:
return false
}
return true
})
}