001package votorola.s.gwt.stage.vote; // Copyright 2012, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE. 002 003import com.google.gwt.dom.client.*; 004import com.google.gwt.i18n.client.NumberFormat; 005import com.google.gwt.user.client.ui.*; 006import com.google.web.bindery.event.shared.HandlerRegistration; 007import votorola.a.count.gwt.*; 008import votorola.g.lang.*; 009import votorola.g.util.Holder; 010import votorola.g.web.gwt.*; 011import votorola.g.web.gwt.event.*; 012 013 014/** A numeric view of a tracked count node showing the volume of {@linkplain 015 * SacRegisterJS_v#receiveVolume() votes received}. The view is empty when the volume is 016 * unknown or zero, but still takes up some space. 017 */ 018public final class FlowVolumeV extends MajorV 019{ 020 021 022 /** Constructs a FlowVolumeV. 023 * 024 * @param _nodeHolder the holder of the count node on which the view is 025 * modelled. 026 * @see MajorV#trackV() 027 * @param y the outermost HTML element of which the view is composed. 028 * @see MajorV#place() 029 */ 030 FlowVolumeV( Holder<CountNodeJS> _nodeHolder, final VoteTrackV trackV, 031 final TableCellElement y, final votorola.a.count.XCastRelation place ) 032 { 033 super( place, trackV ); 034 nodeHolder = _nodeHolder; 035 036 // View. 037 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 038 setElement( y ); 039 final Element strong = DocumentX.createElement( "strong", Document.get() ); 040 strong.appendChild( textH ); 041 y.appendChild( strong ); 042 y.appendChild( textL ); 043 044 // Controllers. 045 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 046 new Modeller( trackV ); 047 } 048 049 050 051 // ------------------------------------------------------------------------------------ 052 053 054 /** Sets the high digits of the volume on <code>textH</code>, and the low digits on 055 * <code>textL</code>. 056 */ 057 public static void set( final long volume, final Text textH, final Text textL ) 058 { 059 final String s = decimalFormatter.format( volume ); 060 int c = s.length() - 2; // skip last char, assumed to be digit 061 for( ; c >= 0 ; --c ) 062 { 063 final char ch = s.charAt( c ); 064 if( !Character.isDigit( ch )) break; 065 } 066 067 final int cLastSeparator = c; 068 final String sH; 069 final String sL; 070 if( cLastSeparator < 0 ) // no separator 071 { 072 sH = ""; 073 sL = s; 074 } 075 else 076 { 077 sH = s.substring( 0, cLastSeparator ); 078 sL = s.substring( cLastSeparator ); 079 } 080 textH.setData( sH ); 081 textL.setData( sL ); 082 } 083 084 085 086//// P r i v a t e /////////////////////////////////////////////////////////////////////// 087 088 089 private static final NumberFormat decimalFormatter = NumberFormat.getDecimalFormat(); 090 091 092 093 private final Holder<CountNodeJS> nodeHolder; 094 095 096 097 private final Text textH = Document.get().createTextNode( "" ); // high digits 098 099 100 101 private final Text textL = Document.get().createTextNode( "" ); // low digits 102 103 104 105 // ==================================================================================== 106 107 108 private final class Modeller extends SuspendedModeller 109 { 110 111 Modeller( final VoteTrackV trackV ) 112 { 113 super( trackV, spool() ); 114 remodelUnlessMoving(); // init state 115 } 116 117 118 final @Warning("init call") void remodel() 119 { 120 final CountNodeJS node = nodeHolder.get(); 121 final long volume; 122 if( node == null ) volume = 0L; 123 else volume = node.voteRegister().receiveVolume(); 124 set( volume, textH, textL ); 125 setVisible( volume > 0L ); 126 } 127 128 } 129 130 131}