CefTextfieldDelegate

Header: cef_textfield_delegate.h
Category: Views Framework

Overview

Browser-process UI toolkit: windows, panels, layouts, buttons, textfields, and their delegates.

CefTextfieldDelegate

Source File: include/views/cef_textfield_delegate.h

Process / Thread Context: Browser Process / UI Thread.

Purpose: Client-implemented delegate for Textfield events: keyboard event

Methods

`virtual bool OnKeyEvent(CefRefPtr<CefTextfield> textfield, const CefKeyEvent& event)`

Parameters:

textfield: The textfield that received the event.
event: The keyboard event.

Return Value: True if the event was handled; false to allow default

Usage Instruction: Intercept special keys (e.g., Esc to clear, Enter

Threading Constraint: Browser process UI thread.

`virtual void OnAfterUserAction(CefRefPtr<CefTextfield> textfield)`

Parameters:

textfield: The textfield after a user action.

Return Value: void.

Usage Instruction: Update dependent UI (e.g., enable/disable a "Submit"

Threading Constraint: Browser process UI thread.

Usage Example

cpp

class SearchFieldDelegate : public CefTextfieldDelegate {
 public:
  bool OnKeyEvent(CefRefPtr<CefTextfield> tf, const CefKeyEvent& e) override {
    if (e.type == KEYEVENT_RAWKEYDOWN && e.windows_key_code == VKEY_RETURN) {
      SubmitSearch(tf->GetText());
      return true;
    }
    return false;
  }
  void OnAfterUserAction(CefRefPtr<CefTextfield> tf) override {
    bool has_text = !tf->GetText().empty();
    submit_btn_->SetEnabled(has_text);
  }
  CefRefPtr<CefButton> submit_btn_;
};

CefTextfieldDelegate ​

Overview ​