コード例 #1
0
        // Token: 0x06003525 RID: 13605 RVA: 0x000F0C7C File Offset: 0x000EEE7C
        private static void OnTextPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            Run run = (Run)d;

            if (run._changeEventNestingCount > 0)
            {
                return;
            }
            Invariant.Assert(!e.NewEntry.IsDeferredReference);
            string text = (string)e.NewValue;

            if (text == null)
            {
                text = string.Empty;
            }
            run._changeEventNestingCount++;
            try
            {
                TextContainer textContainer = run.TextContainer;
                textContainer.BeginChange();
                try
                {
                    TextPointer contentStart = run.ContentStart;
                    if (!run.IsEmpty)
                    {
                        textContainer.DeleteContentInternal(contentStart, run.ContentEnd);
                    }
                    contentStart.InsertTextInRun(text);
                }
                finally
                {
                    textContainer.EndChange();
                }
            }
            finally
            {
                run._changeEventNestingCount--;
            }
            FlowDocument flowDocument = run.TextContainer.Parent as FlowDocument;

            if (flowDocument != null)
            {
                RichTextBox richTextBox = flowDocument.Parent as RichTextBox;
                if (richTextBox != null && run.HasExpression(run.LookupEntry(Run.TextProperty.GlobalIndex), Run.TextProperty))
                {
                    UndoManager undoManager = richTextBox.TextEditor._GetUndoManager();
                    if (undoManager != null && undoManager.IsEnabled)
                    {
                        undoManager.Clear();
                    }
                }
            }
        }
コード例 #2
0
        /// <summary>Clears all items from the collection.</summary>
        // Token: 0x06003979 RID: 14713 RVA: 0x001048F8 File Offset: 0x00102AF8
        public void Clear()
        {
            TextContainer textContainer = this.TextContainer;

            textContainer.BeginChange();
            try
            {
                textContainer.DeleteContentInternal(this.ContentStart, this.ContentEnd);
            }
            finally
            {
                textContainer.EndChange();
            }
        }
コード例 #3
0
        /// <summary>
        /// </summary>
        public void Clear()
        {
            // Note: We need to remember the textcontainer for any delete operations in this collection.
            // This is important for the case when the owner of the collection is a sibling member.
            // In a scenario where you remove the owner itself from the collection,
            // the owner belongs to another tree after the reposition.

            TextContainer textContainer = this.TextContainer;

            textContainer.BeginChange();
            try
            {
                textContainer.DeleteContentInternal(this.ContentStart, this.ContentEnd);
            }
            finally
            {
                textContainer.EndChange();
            }
        }
コード例 #4
0
        private void UpdateText(string text)
        {
            if (text == null)
            {
                text = string.Empty;
            }

            _accessKeyLocated = false;
            _accessKey        = null;
            TextContainer.BeginChange();
            try
            {
                TextContainer.DeleteContentInternal((TextPointer)TextContainer.Start, TextContainer.End);
                Run run = Inline.CreateImplicitRun(this);
                ((TextPointer)TextContainer.End).InsertTextElement(run);
                run.Text = text;
            }
            finally
            {
                TextContainer.EndChange();
            }
        }
コード例 #5
0
        //-------------------------------------------------------------------
        //
        // Private Methods
        //
        //-------------------------------------------------------------------

        #region Private Methods

        /// <summary>
        /// Changed handler for the Text property.
        /// </summary>
        /// <param name="d">The source of the event.</param>
        /// <param name="e">A PropertyChangedEventArgs that contains the event data.</param>
        /// <remarks>
        /// We can't assume the value is a string here -- it may be a DeferredRunTextReference.
        /// </remarks>
        private static void OnTextPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            Run run = (Run)d;

            // Return if this update was caused by a TextContainer change or a reentrant change.
            if (run._changeEventNestingCount > 0)
            {
                return;
            }

            Invariant.Assert(!e.NewEntry.IsDeferredReference);

            // CoerceText will have already converted null -> String.Empty, but our default
            // CoerceValueCallback could be overridden by a derived class.  So check again here.
            string newText = (string)e.NewValue;

            if (newText == null)
            {
                newText = String.Empty;
            }

            // Run.TextProperty has changed. Update the backing store.
            run._changeEventNestingCount++;
            try
            {
                TextContainer textContainer = run.TextContainer;
                textContainer.BeginChange();

                try
                {
                    TextPointer contentStart = run.ContentStart;
                    if (!run.IsEmpty)
                    {
                        textContainer.DeleteContentInternal(contentStart, run.ContentEnd);
                    }
                    contentStart.InsertTextInRun(newText);
                }
                finally
                {
                    textContainer.EndChange();
                }
            }
            finally
            {
                run._changeEventNestingCount--;
            }

            // We need to clear undo stack if we are in a RichTextBox and the value comes from
            // data binding or some other expression.
            FlowDocument document = run.TextContainer.Parent as FlowDocument;

            if (document != null)
            {
                RichTextBox rtb = document.Parent as RichTextBox;
                if (rtb != null && run.HasExpression(run.LookupEntry(Run.TextProperty.GlobalIndex), Run.TextProperty))
                {
                    UndoManager undoManager = rtb.TextEditor._GetUndoManager();
                    if (undoManager != null && undoManager.IsEnabled)
                    {
                        undoManager.Clear();
                    }
                }
            }
        }