Esempio n. 1
0
        /// <summary>
        /// Creates a new instance of the AutoCompleteMessageFilter
        /// </summary>
        /// <param name="autoCompleteForm">The auto complete form associated with the host rich text box control</param>
        /// <remarks>The message filter is created and added to the message loop using the install function. The filter
        /// is automatically disposed once the auto complete form is closed - the filter is automatically removed
        /// from the message loop at this time.</remarks>
        private AutoCompleteMessageFilter(frmAutoComplete autoCompleteForm)
        {
            AutoCompleteForm           = autoCompleteForm;
            AutoCompleteForm.Disposed += AutoCompleteForm_Disposed;

            IsDisposed = false;
        }
        private void DoAutoComplete()
        {
            // create form if not exists

            if (_autoCompleteForm == null)
            {
                // initialize and wire up new form

                _autoCompleteForm = new frmAutoComplete();
                _autoCompleteForm.AutoCompleteComplete += _autoCompleteForm_AutoCompleteComplete;

                // install message filter to listen for lost focus

                AutoCompleteMessageFilter.Install(_autoCompleteForm);
            }

            // set auto complete options

            _currentInput     = _hostInterface.GetCurrentInput();
            _currentInputNode = _currentInput.GetNodeAtPosition(_hostInterface.InputPosition);

            List <string> autoCompleteOptions = _provider.GetOptions(_currentInput, _currentInputNode);

            if (autoCompleteOptions != null && autoCompleteOptions.Count == 1)
            {
                string value = autoCompleteOptions[0];
                if (value.IndexOf(' ') > 0)
                {
                    value = string.Format("\"{0}\"", value);
                }
                _hostInterface.ReplaceCurrentNode(value);
            }
            else if (autoCompleteOptions != null && autoCompleteOptions.Count > 1) // only show if options are available
            {
                _autoCompleteForm.SetAutoCompleteOptions(autoCompleteOptions);

                // get the location of the caret, plus the line height as the auto complete form open point

                _autoCompleteForm.Location = GetPopupLocation(_hostInterface.CaretLocation, _hostInterface.RTB.SelectionFont.Height);

                // open the auto complete form

                _autoCompleteForm.Show();

                // adjust key input filter settings

                _hostInterface.InputFilters.SetFilterMode(FilterMode.AutoComplete);
            }
        }
Esempio n. 3
0
 /// <summary>
 /// Installs a new auto complete message filter into the message loop for the given auto complete form
 /// </summary>
 /// <param name="autoCompleteForm">The auto complete form for which to install the message filter</param>
 public static void Install(frmAutoComplete autoCompleteForm)
 {
     Application.AddMessageFilter(new AutoCompleteMessageFilter(autoCompleteForm));
 }