1 files changed, 161 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/TextRange.js b/Source/WebInspectorUI/UserInterface/TextRange.js
new file mode 100644
index 000000000..f01156943
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+++ b/Source/WebInspectorUI/UserInterface/TextRange.js
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.TextRange = function(startLineOrStartOffset, startColumnOrEndOffset, endLine, endColumn)
+{
+    WebInspector.Object.call(this);
+
+    if (arguments.length === 4) {
+        console.assert(startLineOrStartOffset <= endLine);
+        console.assert(startLineOrStartOffset !== endLine || startColumnOrEndOffset <= endColumn);
+
+        this._startLine = typeof startLineOrStartOffset === "number" ? startLineOrStartOffset : NaN;
+        this._startColumn = typeof startColumnOrEndOffset === "number" ? startColumnOrEndOffset : NaN;
+        this._endLine = typeof endLine === "number" ? endLine : NaN;
+        this._endColumn = typeof endColumn === "number" ? endColumn : NaN;
+
+        this._startOffset = NaN;
+        this._endOffset = NaN;
+    } else if (arguments.length === 2) {
+        console.assert(startLineOrStartOffset <= startColumnOrEndOffset);
+
+        this._startOffset = typeof startLineOrStartOffset === "number" ? startLineOrStartOffset : NaN;
+        this._endOffset = typeof startColumnOrEndOffset === "number" ? startColumnOrEndOffset : NaN;
+
+        this._startLine = NaN;
+        this._startColumn = NaN;
+        this._endLine = NaN;
+        this._endColumn = NaN;
+    }
+}
+
+WebInspector.TextRange.prototype = {
+    constructor: WebInspector.TextRange,
+
+    // Public
+
+    get startLine()
+    {
+        return this._startLine;
+    },
+
+    get startColumn()
+    {
+        return this._startColumn;
+    },
+
+    get endLine()
+    {
+        return this._endLine;
+    },
+
+    get endColumn()
+    {
+        return this._endColumn;
+    },
+
+    get startOffset()
+    {
+        return this._startOffset;
+    },
+
+    get endOffset()
+    {
+        return this._endOffset;
+    },
+
+    startPosition: function()
+    {
+        return new WebInspector.SourceCodePosition(this._startLine, this._startColumn);
+    },
+
+    endPosition: function()
+    {
+        return new WebInspector.SourceCodePosition(this._endLine, this._endColumn);
+    },
+
+    resolveLinesAndColumns: function(text)
+    {
+        console.assert(typeof text === "string");
+        if (typeof text !== "string")
+            return;
+
+        console.assert(!isNaN(this._startOffset));
+        console.assert(!isNaN(this._endOffset));
+        if (isNaN(this._startOffset) || isNaN(this._endOffset))
+            return;
+
+        function countNewLineCharacters(text)
+        {
+            var matches = text.match(/\n/g);
+            return matches ? matches.length : 0;
+        }
+
+        var startSubstring = text.substring(0, this._startOffset);
+        var rangeSubstring = text.substring(this._startOffset, this._endOffset);
+
+        var startNewLineCount = countNewLineCharacters(startSubstring);
+        var rangeNewLineCount = countNewLineCharacters(rangeSubstring);
+
+        this._startLine = startNewLineCount;
+        this._endLine = startNewLineCount + rangeNewLineCount;
+
+        var lastNewLineOffset = startNewLineCount ? startSubstring.lastIndexOf("\n") + 1 : 0;
+        this._startColumn = startSubstring.length - lastNewLineOffset;
+
+        lastNewLineOffset = rangeNewLineCount ? rangeSubstring.lastIndexOf("\n") + 1 : 0;
+        this._endColumn = rangeSubstring.length - lastNewLineOffset;
+
+        if (this._startLine === this._endLine)
+            this._endColumn += this._startColumn;
+    },
+
+    resolveOffsets: function(text)
+    {
+        console.assert(typeof text === "string");
+        if (typeof text !== "string")
+            return;
+
+        console.assert(!isNaN(this._startLine));
+        console.assert(!isNaN(this._startColumn));
+        console.assert(!isNaN(this._endLine));
+        console.assert(!isNaN(this._endColumn));
+        if (isNaN(this._startLine) || isNaN(this._startColumn) || isNaN(this._endLine) || isNaN(this._endColumn))
+            return;
+
+        var lastNewLineOffset = 0;
+        for (var i = 0; i < this._startLine; ++i)
+            lastNewLineOffset = text.indexOf("\n", lastNewLineOffset) + 1;
+
+        this._startOffset = lastNewLineOffset + this._startColumn;
+
+        for (var i = this._startLine; i < this._endLine; ++i)
+            lastNewLineOffset = text.indexOf("\n", lastNewLineOffset) + 1;
+
+        this._endOffset = lastNewLineOffset + this._endColumn;
+    }
+};
+
+WebInspector.TextRange.prototype.__proto__ = WebInspector.Object.prototype;