001package votorola.s.gwt.scene.vote; // Copyright 2011, 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.core.client.*; 004import com.google.gwt.dom.client.*; 005import com.google.web.bindery.event.shared.HandlerRegistration; 006import com.google.gwt.view.client.*; 007import org.vectomatic.dom.svg.*; 008import votorola.a.count.gwt.*; 009import votorola.g.hold.*; 010import votorola.g.web.gwt.event.*; 011import votorola.g.web.gwt.svg.*; 012 013import static votorola.a.count.CountNode.DART_SECTOR_MAX; 014 015 016/** A circular view of peer nodes in votespace, ordered clockwise by dart sector. 017 */ 018abstract class Circle<P extends SVGNest<?>> extends SVGParaNest<P> 019{ 020 021 022 /** Constructs a Circle. 023 * 024 * @see #inCircle() 025 * @see #level() 026 */ 027 Circle( Circle<?> _inCircle, int _level, VotespaceV _votespaceV ) 028 { 029 inCircle = _inCircle; 030 level = _level; 031 votespaceV = _votespaceV; 032 033 svgView = votespaceV.document().createSVGGElement(); 034 svgView.addClassNameBaseVal( "circle" ); 035 036 registerPainter = new RegisterPainter(); 037 } 038 039 040 041 // ------------------------------------------------------------------------------------ 042 043 044 /** The current candidate view for all nodes of this circle, or null if there is none. 045 */ 046 abstract NodeV candidateV(); 047 048 049 050 /** The number of count node views, or the maximum number of peer nodes that can be 051 * shown in this circle. 052 */ 053 static int capacity() { return DART_SECTOR_MAX; } 054 055 056 057 /** Returns the node view at the specified dart sector offset. 058 * 059 * @param offset the dart sector offset, which is zero based. 060 * @throws ArrayIndexOutOfBoundsException if the offset is not less than the 061 * capacity of this circle. 062 * 063 * @see #setCountNodeV(NodeV,int) 064 */ 065 final NodeV nodeV( final int offset ) { return nodeV[offset]; } 066 067 068 private final NodeV[] nodeV = new NodeV[DART_SECTOR_MAX]; 069 070 071 /** Sets a node view. 072 * 073 * @see #nodeV(int) 074 */ 075 final void setCountNodeV( final NodeV v, final int offset ) { nodeV[offset] = v; } 076 077 078 079 /** Answers whether the SVG component is nominally visible. Returns false if the 080 * display style is "none", true otherwise. 081 * 082 * @see #svgView() 083 * @see #setVisible(boolean) 084 */ 085 final boolean isVisible() { return !"none".equals( svgView().getStyle().getDisplay() ); } 086 087 088 089 /** Sets the visibility of the SVG component. 090 * 091 * @see #isVisible() 092 */ 093 final void setVisible( final boolean toBe ) 094 { 095 final Style style = svgView.getStyle(); 096 if( toBe ) style.clearDisplay(); 097 else style.setDisplay( Style.Display.NONE ); 098 } 099 100 101 102 /** The circle at the next level inward, or null if there is none. 103 */ 104 final Circle<?> inCircle() { return inCircle; } 105 106 107 private final Circle<?> inCircle; 108 109 110 111 /** The periperal level of this circle, where zero is the center circle. 112 */ 113 final int level() { return level; } 114 115 116 private final int level; 117 118 119 120 /** The volume of votes below which a node is to be shown as a "mosquito". 121 * 122 * @see NodeV#isMosquito() 123 * @see #setMosquitoBar(long) 124 */ 125 final long mosquitoBar() { return mosquitoBar; } 126 127 128 private long mosquitoBar; 129 130 131 /** Sets the mosquito bar. 132 * 133 * @see #mosquitoBar() 134 */ 135 final void setMosquitoBar( long _mosquitoBar ) { mosquitoBar = _mosquitoBar; } 136 137 138 139 /** The radius of clear space surrounding each count node of this circle. The 140 * standoff is generally free of voteflow radials and other graphics. 141 */ 142 abstract float nodularStandOff(); 143 144 145 146 /** Returns the circle at the next level outward, creating a new circle if necessary. 147 */ 148 final VoterCircle outCircle() 149 { 150 if( outCircle == null ) outCircle = new VoterCircle( Circle.this, level + 1, votespaceV ); 151 152 return outCircle; 153 } 154 155 156 private VoterCircle outCircle; 157 158 159 160 /** The register painter for this circle. 161 */ 162 RegisterPainter registerPainter() { return registerPainter; } 163 164 165 private final RegisterPainter registerPainter; 166 167 168 169 /** The scene view of which this view is a component. 170 */ 171 final VotespaceV votespaceV() { return votespaceV; } 172 173 174 private final VotespaceV votespaceV; 175 176 177 178 // - S V G - W r a p p e r ---------------------------------------------------------- 179 180 181 public final OMSVGGElement svgView() { return svgView; } 182 183 184 private final OMSVGGElement svgView; 185 186 187 188 // ==================================================================================== 189 190 191 /** A painter of the superaccount register views in each node of the circle. 192 */ 193 final class RegisterPainter implements Scheduler.ScheduledCommand, SelectionChangeEvent.Handler 194 { 195 196 RegisterPainter() 197 { 198 votespaceV.spool().add( new Hold() 199 { 200 final HandlerRegistration hR 201 = votespaceV.model().addSelectionChangeHandler( RegisterPainter.this ); 202 public void release() { hR.removeHandler(); } 203 }); 204 } 205 206 207 private final CoalescingSchedulerS cScheduler = new CoalescingSchedulerS( 208 CoalescingSchedulerS.FINALLY, RegisterPainter.this ); 209 210 211 public void execute() 212 { 213 if( !isVisible() ) return; 214 215 final SacJS sac = votespaceV.model().getSac(); 216 if( sac == null ) return; // register view invisible, no need to repaint 217 218 final CountingMethodJS.SwitchMnemonic mCM = sac.countingMethodMnemonic(); 219 if( mCM == CountingMethodJS.SwitchMnemonic.nul ) return; // " 220 221 final String accountName = sac.accountName(); 222 for( int n = 0, nN = capacity(); n < nN; ++n ) 223 { 224 final NodeV v = nodeV( n ); 225 v.repaintRegister( mCM, accountName ); 226 } 227 } 228 229 230 public void onSelectionChange( SelectionChangeEvent _e ) { repaintLater(); } 231 232 233 /** Schedules a repaint. 234 */ 235 void repaintLater() { cScheduler.schedule(); } 236 237 238 } 239 240 241 242}