126 lines
4.1 KiB
JavaScript
126 lines
4.1 KiB
JavaScript
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/*
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* Copyright (C) 2010 Nikita Vasilyev. All rights reserved.
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* Copyright (C) 2010 Joseph Pecoraro. All rights reserved.
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* Copyright (C) 2010 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WebInspector.CSSCompletions = function(values, acceptEmptyPrefix)
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{
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this._values = values.slice();
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this._values.sort();
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this._acceptEmptyPrefix = acceptEmptyPrefix;
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}
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WebInspector.CSSCompletions.prototype = {
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startsWith: function(prefix)
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{
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var firstIndex = this._firstIndexOfPrefix(prefix);
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if (firstIndex === -1)
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return [];
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var results = [];
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while (firstIndex < this._values.length && this._values[firstIndex].indexOf(prefix) === 0)
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results.push(this._values[firstIndex++]);
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return results;
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},
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firstStartsWith: function(prefix)
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{
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var foundIndex = this._firstIndexOfPrefix(prefix);
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return (foundIndex === -1 ? "" : this._values[foundIndex]);
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},
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_firstIndexOfPrefix: function(prefix)
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{
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if (!this._values.length)
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return -1;
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if (!prefix)
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return this._acceptEmptyPrefix ? 0 : -1;
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var maxIndex = this._values.length - 1;
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var minIndex = 0;
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var foundIndex;
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do {
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var middleIndex = (maxIndex + minIndex) >> 1;
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if (this._values[middleIndex].indexOf(prefix) === 0) {
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foundIndex = middleIndex;
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break;
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}
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if (this._values[middleIndex] < prefix)
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minIndex = middleIndex + 1;
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else
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maxIndex = middleIndex - 1;
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} while (minIndex <= maxIndex);
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if (foundIndex === undefined)
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return -1;
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while (foundIndex && this._values[foundIndex - 1].indexOf(prefix) === 0)
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foundIndex--;
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return foundIndex;
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},
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keySet: function()
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{
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return this._values.keySet();
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},
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next: function(str, prefix)
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{
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return this._closest(str, prefix, 1);
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},
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previous: function(str, prefix)
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{
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return this._closest(str, prefix, -1);
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},
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_closest: function(str, prefix, shift)
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{
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if (!str)
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return "";
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var index = this._values.indexOf(str);
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if (index === -1)
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return "";
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if (!prefix) {
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index = (index + this._values.length + shift) % this._values.length;
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return this._values[index];
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}
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var propertiesWithPrefix = this.startsWith(prefix);
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var j = propertiesWithPrefix.indexOf(str);
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j = (j + propertiesWithPrefix.length + shift) % propertiesWithPrefix.length;
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return propertiesWithPrefix[j];
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}
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}
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