diff options
Diffstat (limited to 'subsonic-main/src/main/webapp/script/webfx/range.js')
| -rw-r--r-- | subsonic-main/src/main/webapp/script/webfx/range.js | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/subsonic-main/src/main/webapp/script/webfx/range.js b/subsonic-main/src/main/webapp/script/webfx/range.js new file mode 100644 index 00000000..53c8f34e --- /dev/null +++ b/subsonic-main/src/main/webapp/script/webfx/range.js @@ -0,0 +1,132 @@ +/*----------------------------------------------------------------------------\ +| Range Class | +|-----------------------------------------------------------------------------| +| Created by Erik Arvidsson | +| (http://webfx.eae.net/contact.html#erik) | +| For WebFX (http://webfx.eae.net/) | +|-----------------------------------------------------------------------------| +| Used to model the data used when working with sliders, scrollbars and | +| progress bars. Based on the ideas of the javax.swing.BoundedRangeModel | +| interface defined by Sun for Java; http://java.sun.com/products/jfc/ | +| swingdoc-api-1.0.3/com/sun/java/swing/BoundedRangeModel.html | +|-----------------------------------------------------------------------------| +| Copyright (c) 2002, 2005, 2006 Erik Arvidsson | +|-----------------------------------------------------------------------------| +| Licensed under the Apache License, Version 2.0 (the "License"); you may not | +| use this file except in compliance with the License. You may obtain a copy | +| of the License at http://www.apache.org/licenses/LICENSE-2.0 | +| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | +| Unless required by applicable law or agreed to in writing, software | +| distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | +| WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | +| License for the specific language governing permissions and limitations | +| under the License. | +|-----------------------------------------------------------------------------| +| 2002-10-14 | Original version released | +| 2005-10-27 | Use Math.round instead of Math.floor | +| 2006-05-28 | Changed license to Apache Software License 2.0. | +|-----------------------------------------------------------------------------| +| Created 2002-10-14 | All changes are in the log above. | Updated 2006-05-28 | +\----------------------------------------------------------------------------*/ + + +function Range() { + this._value = 0; + this._minimum = 0; + this._maximum = 100; + this._extent = 0; + + this._isChanging = false; +} + +Range.prototype.setValue = function (value) { + value = Math.round(parseFloat(value)); + if (isNaN(value)) return; + if (this._value != value) { + if (value + this._extent > this._maximum) + this._value = this._maximum - this._extent; + else if (value < this._minimum) + this._value = this._minimum; + else + this._value = value; + if (!this._isChanging && typeof this.onchange == "function") + this.onchange(); + } +}; + +Range.prototype.getValue = function () { + return this._value; +}; + +Range.prototype.setExtent = function (extent) { + if (this._extent != extent) { + if (extent < 0) + this._extent = 0; + else if (this._value + extent > this._maximum) + this._extent = this._maximum - this._value; + else + this._extent = extent; + if (!this._isChanging && typeof this.onchange == "function") + this.onchange(); + } +}; + +Range.prototype.getExtent = function () { + return this._extent; +}; + +Range.prototype.setMinimum = function (minimum) { + if (this._minimum != minimum) { + var oldIsChanging = this._isChanging; + this._isChanging = true; + + this._minimum = minimum; + + if (minimum > this._value) + this.setValue(minimum); + if (minimum > this._maximum) { + this._extent = 0; + this.setMaximum(minimum); + this.setValue(minimum) + } + if (minimum + this._extent > this._maximum) + this._extent = this._maximum - this._minimum; + + this._isChanging = oldIsChanging; + if (!this._isChanging && typeof this.onchange == "function") + this.onchange(); + } +}; + +Range.prototype.getMinimum = function () { + return this._minimum; +}; + +Range.prototype.setMaximum = function (maximum) { + if (this._maximum != maximum) { + var oldIsChanging = this._isChanging; + this._isChanging = true; + + this._maximum = maximum; + + if (maximum < this._value) + this.setValue(maximum - this._extent); + if (maximum < this._minimum) { + this._extent = 0; + this.setMinimum(maximum); + this.setValue(this._maximum); + } + if (maximum < this._minimum + this._extent) + this._extent = this._maximum - this._minimum; + if (maximum < this._value + this._extent) + this._extent = this._maximum - this._value; + + this._isChanging = oldIsChanging; + if (!this._isChanging && typeof this.onchange == "function") + this.onchange(); + } +}; + +Range.prototype.getMaximum = function () { + return this._maximum; +}; |