+/*
+ * Copyright (C) 2013 FooProject
+ * * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+#if METRO || WINDOWS_UWP
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Automation;
+using Windows.UI.Xaml.Automation.Peers;
+using Windows.UI.Xaml.Automation.Provider;
+using Windows.UI.Xaml.Automation.Text;
+#if METRO
+using FooEditEngine.Metro;
+#else
+using FooEditEngine.UWP;
+#endif
+#endif
+#if WPF
+using System.Windows.Automation;
+using System.Windows.Automation.Peers;
+using System.Windows.Automation.Provider;
+using System.Windows.Automation.Text;
+using FooEditEngine.WPF;
+#endif
+
+namespace FooEditEngine
+{
+#if ENABLE_AUTMATION
+ /// <summary>
+ /// A minimal implementation of ITextRangeProvider, used by CustomControl2AutomationPeer
+ /// A real implementation is beyond the scope of this sample
+ /// </summary>
+ sealed class FooTextBoxRangeProvider : ITextRangeProvider
+ {
+ private FooTextBox textbox;
+ private FooTextBoxAutomationPeer _peer;
+ private int start, end;
+
+ public FooTextBoxRangeProvider(FooTextBox textbox, FooTextBoxAutomationPeer peer)
+ : this(textbox, 0, textbox.Document.Length, peer)
+ {
+ }
+ public FooTextBoxRangeProvider(FooTextBox textbox, int start, int length, FooTextBoxAutomationPeer peer)
+ {
+ this.textbox = textbox;
+ this.start = start;
+ this.end = start + length;
+ _peer = peer;
+ }
+
+ public void AddToSelection()
+ {
+ throw new InvalidOperationException();
+ }
+
+ public ITextRangeProvider Clone()
+ {
+ return new FooTextBoxRangeProvider(this.textbox, this.start, this.end - this.start, _peer);
+ }
+
+ public bool Compare(ITextRangeProvider o)
+ {
+ FooTextBoxRangeProvider other = o as FooTextBoxRangeProvider;
+ if (other == null)
+ throw new ArgumentNullException("null以外の値を指定してください");
+ if (this.start == other.start && this.end == other.end)
+ return true;
+ else
+ return false;
+ }
+
+ public int CompareEndpoints(TextPatternRangeEndpoint endpoint, ITextRangeProvider targetRange, TextPatternRangeEndpoint targetEndpoint)
+ {
+ FooTextBoxRangeProvider other = targetRange as FooTextBoxRangeProvider;
+
+ if (other == null)
+ throw new ArgumentException("");
+
+ if (endpoint == TextPatternRangeEndpoint.Start)
+ {
+ if (targetEndpoint == TextPatternRangeEndpoint.Start)
+ return this.Compare(this.start, other.start);
+ if (targetEndpoint == TextPatternRangeEndpoint.End)
+ return this.Compare(this.start, other.end);
+ }
+ if (endpoint == TextPatternRangeEndpoint.End)
+ {
+ if (targetEndpoint == TextPatternRangeEndpoint.Start)
+ return this.Compare(this.start, other.end);
+ if (targetEndpoint == TextPatternRangeEndpoint.End)
+ return this.Compare(this.end, other.end);
+ }
+ throw new ArgumentException("endpointに未知の値が指定されました");
+ }
+
+ int Compare(int self, int other)
+ {
+ if (self < other)
+ return -1;
+ else if (self > other)
+ return 1;
+ else
+ return 0;
+ }
+
+ public void ExpandToEnclosingUnit(TextUnit unit)
+ {
+ Controller ctrl = this.textbox.Controller;
+ Document doc = this.textbox.Document;
+ if (unit == TextUnit.Character)
+ {
+ return;
+ }
+ if (unit == TextUnit.Format || unit == TextUnit.Word)
+ {
+ var t = doc.GetSepartor(this.start, (c) => Util.IsWordSeparator(c));
+ if (t == null)
+ this.start = this.end = 0;
+ else
+ {
+ this.start = t.Item1;
+ this.end = t.Item2;
+ }
+ return;
+ }
+ if (unit == TextUnit.Line || unit == TextUnit.Paragraph)
+ {
+ var t = doc.GetSepartor(this.start, (c) => c == Document.NewLine);
+ if (t == null)
+ this.start = this.end = 0;
+ else
+ {
+ this.start = t.Item1;
+ this.end = t.Item2;
+ }
+ return;
+ }
+ if (unit == TextUnit.Page || unit == TextUnit.Document)
+ {
+ this.start = 0;
+ this.end = this.textbox.Document.Length;
+ return;
+ }
+ throw new NotImplementedException();
+ }
+
+ public ITextRangeProvider FindAttribute(int attribute, Object value, bool backward)
+ {
+ return null;
+ }
+
+ public ITextRangeProvider FindText(String text, bool backward, bool ignoreCase)
+ {
+ if (backward)
+ throw new NotImplementedException();
+ textbox.Document.SetFindParam(text, false, ignoreCase ? RegexOptions.IgnoreCase : RegexOptions.None);
+ IEnumerator<SearchResult> it = textbox.Document.Find();
+ if (it.MoveNext())
+ {
+ SearchResult sr = it.Current;
+ return new FooTextBoxRangeProvider(this.textbox, sr.Start, sr.End - sr.Start + 1, _peer);
+ }
+ return null;
+ }
+
+ public Object GetAttributeValue(int attribute)
+ {
+ return null;
+ }
+
+#if METRO || WINDOWS_UWP
+ public void GetBoundingRectangles(out double[] rectangles)
+#endif
+#if WPF
+ public double[] GetBoundingRectangles()
+#endif
+ {
+ LineToIndexTable layoutLineCollection = this.textbox.LayoutLineCollection;
+ TextPoint topLeft = layoutLineCollection.GetTextPointFromIndex(this.start);
+ TextPoint bottomRight = this.textbox.LayoutLineCollection.GetTextPointFromIndex(IsNewLine(this.end) ? this.end - 1 : this.end);
+
+
+#if METRO || WINDOWS_UWP
+ float dpi;
+ Util.GetDpi(out dpi, out dpi);
+ double scale = dpi / 96;
+ Point topLeftPos = this.textbox.GetPostionFromTextPoint(topLeft);
+ Point bottomRightPos = this.textbox.GetPostionFromTextPoint(bottomRight);
+ topLeftPos = Util.GetPointInWindow(topLeftPos.Scale(scale), textbox);
+ bottomRightPos = Util.GetPointInWindow(bottomRightPos.Scale(scale), textbox);
+#endif
+#if WPF
+ Point topLeftPos = this.textbox.GetPostionFromTextPoint(topLeft);
+ Point bottomRightPos = this.textbox.GetPostionFromTextPoint(bottomRight);
+ topLeftPos = this.textbox.PointToScreen(topLeftPos);
+ bottomRightPos = this.textbox.PointToScreen(bottomRightPos);
+#endif
+
+ double width = bottomRightPos.X - topLeftPos.X;
+ if (width == 0)
+ width = 1;
+ Rectangle rect = new Rectangle(topLeftPos.X, topLeftPos.Y,
+ width,
+ bottomRightPos.Y - topLeftPos.Y + layoutLineCollection.GetLineHeight(bottomRight));
+
+#if METRO || WINDOWS_UWP
+ rectangles = new double[4]{
+ rect.X,
+ rect.Y,
+ rect.Width,
+ rect.Height
+ };
+#endif
+#if WPF
+ return new double[4]{
+ rect.X,
+ rect.Y,
+ rect.Width,
+ rect.Height
+ };
+#endif
+ }
+
+ bool IsNewLine(int index)
+ {
+ if (this.textbox.Document.Length > 0)
+ return this.textbox.Document[index == 0 ? 0 : index - 1] == Document.NewLine;
+ else
+ return false;
+ }
+
+ public IRawElementProviderSimple[] GetChildren()
+ {
+ return new IRawElementProviderSimple[0];
+ }
+
+ public IRawElementProviderSimple GetEnclosingElement()
+ {
+ return _peer.GetRawElementProviderSimple();
+ }
+
+ public String GetText(int maxLength)
+ {
+ if (this.textbox.Document.Length == 0)
+ return "";
+ int length = this.end - this.start;
+ if (maxLength < 0)
+ return this.textbox.Document.ToString(this.start, length);
+ else
+ return this.textbox.Document.ToString(this.start, (int)Math.Min(length, maxLength));
+ }
+
+ public int Move(TextUnit unit, int count)
+ {
+ if (count == 0)
+ return 0;
+ Controller ctrl = textbox.Controller;
+ LineToIndexTable layoutLine = textbox.LayoutLineCollection;
+ int moved = this.MoveEndpointByUnit(TextPatternRangeEndpoint.Start, unit, count);
+ this.ExpandToEnclosingUnit(unit);
+ return moved;
+ }
+
+ public void MoveEndpointByRange(TextPatternRangeEndpoint endpoint, ITextRangeProvider targetRange, TextPatternRangeEndpoint targetEndpoint)
+ {
+ FooTextBoxRangeProvider other = targetRange as FooTextBoxRangeProvider;
+
+ if (other == null)
+ throw new ArgumentException("");
+
+ if (endpoint == TextPatternRangeEndpoint.Start)
+ {
+ if (targetEndpoint == TextPatternRangeEndpoint.Start)
+ this.start = other.start;
+ if (targetEndpoint == TextPatternRangeEndpoint.End)
+ this.start = other.end;
+ if (this.start > this.end)
+ this.end = this.start;
+ return;
+ }
+ if (endpoint == TextPatternRangeEndpoint.End)
+ {
+ if (targetEndpoint == TextPatternRangeEndpoint.Start)
+ this.end = other.start;
+ if (targetEndpoint == TextPatternRangeEndpoint.End)
+ this.end = other.end;
+ return;
+ }
+ throw new ArgumentException("endpointに未知の値が指定されました");
+ }
+
+ public int MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit unit, int count)
+ {
+ if (count == 0)
+ return 0;
+
+ int moved = 0;
+ TextPoint caret = TextPoint.Null, newCaret = TextPoint.Null;
+ Controller ctrl = textbox.Controller;
+ LineToIndexTable layoutLine = textbox.LayoutLineCollection;
+
+ if (endpoint == TextPatternRangeEndpoint.Start)
+ caret = layoutLine.GetTextPointFromIndex(this.start);
+ else if (endpoint == TextPatternRangeEndpoint.End)
+ caret = layoutLine.GetTextPointFromIndex(this.end);
+
+ switch (unit)
+ {
+ case TextUnit.Character:
+ newCaret = ctrl.GetNextCaret(caret, count, MoveFlow.Character, out moved);
+ break;
+ case TextUnit.Format:
+ case TextUnit.Word:
+ newCaret = ctrl.GetNextCaret(caret, count, MoveFlow.Word, out moved);
+ break;
+ case TextUnit.Line:
+ newCaret = ctrl.GetNextCaret(caret, count, MoveFlow.Line, out moved);
+ break;
+ case TextUnit.Paragraph:
+ newCaret = ctrl.GetNextCaret(caret, count, MoveFlow.Paragraph, out moved);
+ break;
+ case TextUnit.Page:
+ case TextUnit.Document:
+ this.start = 0;
+ this.end = this.textbox.Document.Length - 1;
+ moved = 1;
+ break;
+ }
+
+ if (endpoint == TextPatternRangeEndpoint.Start)
+ {
+ this.start = layoutLine.GetIndexFromTextPoint(newCaret);
+ if (this.start > this.end)
+ this.end = this.start;
+ }
+ else if (endpoint == TextPatternRangeEndpoint.End)
+ {
+ this.end = layoutLine.GetIndexFromTextPoint(newCaret);
+ if (this.end < this.start)
+ this.start = this.end;
+ }
+ return moved;
+ }
+
+ public void RemoveFromSelection()
+ {
+ throw new InvalidOperationException();
+ }
+
+ public void ScrollIntoView(bool alignToTop)
+ {
+ int row = this.textbox.LayoutLineCollection.GetLineNumberFromIndex(alignToTop ? this.start : this.end);
+ this.textbox.ScrollIntoView(row, alignToTop);
+ }
+
+ public void Select()
+ {
+ this.textbox.Select(this.start, this.end - this.start + 1);
+ }
+ }
+#endif
+}