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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.client.widgets.nonpublic; |
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import org.litesoft.GWT.client.widgets.nonpublic.external.*; |
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public abstract class AbstractSplitterDragger extends AbstractDragger { |
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private AbstractSizeableOneDimensionalPanel mSplitPanel; |
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protected final int mIndex; |
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public AbstractSplitterDragger( AbstractSizeableOneDimensionalPanel pSplitPanel, int pIndex ) { |
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mSplitPanel = pSplitPanel; |
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mIndex = pIndex; |
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} |
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@Override |
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public void start( MouseEvent e ) { |
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if ( mSplitPanel.getWidgetCount() > (mIndex + 1) ) { |
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super.start( e ); |
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} |
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} |
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protected ISizeableWidget getSizeableAt( int pIndex ) { |
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return (ISizeableWidget) mSplitPanel.getWidget( pIndex ); |
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} |
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/** |
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* @return false to prevent additional dragging |
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*/ |
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protected boolean adjustSizesBy( ISizeableDimensionHelper pPrevHelper, ISizeableDimensionHelper pNextHelper, int pDelta ) { |
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return (pDelta == 0) || ((pDelta < 0) ? // |
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shrinkExpandSizesBy( pPrevHelper, pNextHelper, -pDelta ) : // |
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shrinkExpandSizesBy( pNextHelper, pPrevHelper, pDelta )); |
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} |
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private boolean shrinkExpandSizesBy( ISizeableDimensionHelper pShrinkingHelper, ISizeableDimensionHelper pExpandingHelper, int pDelta ) { |
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int maxShrinkability = pShrinkingHelper.getDimensionMaxShrinkability(); |
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if ( maxShrinkability <= 1 ) { |
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return false; |
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} |
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if ( pDelta >= maxShrinkability ) { |
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pDelta = maxShrinkability - 1; |
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} |
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int shrinkingCurSize = pShrinkingHelper.getDimension(); |
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int expandingCurSize = pExpandingHelper.getDimension(); |
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//System.out.println( "Split Pair Panel:shrink (" + shrinkingCurSize + ") Expand (" + |
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// expandingCurSize + ") SizesBy: " + pDelta ); |
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int shrinkingNewSize = shrinkingCurSize - pDelta; |
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pShrinkingHelper.setDimension( shrinkingNewSize ); |
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if ( pShrinkingHelper.getDimension() != shrinkingNewSize ) { |
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return false; |
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} |
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int expandingNewSize = expandingCurSize + pDelta; |
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pExpandingHelper.setDimension( expandingNewSize ); |
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return true; |
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} |
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} |
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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.client.widgets.nonpublic; |
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import org.litesoft.GWT.client.widgets.nonpublic.external.*; |
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public abstract class AbstractSplitterDragger extends AbstractDragger { |
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private AbstractSizeableOneDimensionalPanel mSplitPanel; |
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protected final int mIndex; |
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public AbstractSplitterDragger( AbstractSizeableOneDimensionalPanel pSplitPanel, int pIndex ) { |
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mSplitPanel = pSplitPanel; |
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mIndex = pIndex; |
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} |
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@Override |
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public void start( MouseEvent e ) { |
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if ( mSplitPanel.getWidgetCount() > (mIndex + 1) ) { |
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super.start( e ); |
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} |
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} |
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protected ISizeableWidget getSizeableAt( int pIndex ) { |
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return (ISizeableWidget) mSplitPanel.getWidget( pIndex ); |
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} |
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/** |
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* @return false to prevent additional dragging |
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*/ |
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protected boolean adjustSizesBy( ISizeableDimensionHelper pPrevHelper, ISizeableDimensionHelper pNextHelper, int pDelta ) { |
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return (pDelta == 0) || ((pDelta < 0) ? // |
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shrinkExpandSizesBy( pPrevHelper, pNextHelper, -pDelta ) : // |
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shrinkExpandSizesBy( pNextHelper, pPrevHelper, pDelta )); |
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} |
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private boolean shrinkExpandSizesBy( ISizeableDimensionHelper pShrinkingHelper, ISizeableDimensionHelper pExpandingHelper, int pDelta ) { |
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int maxShrinkability = pShrinkingHelper.getDimensionMaxShrinkability(); |
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if ( maxShrinkability <= 1 ) { |
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return false; |
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} |
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if ( pDelta >= maxShrinkability ) { |
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pDelta = maxShrinkability - 1; |
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} |
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int shrinkingCurSize = pShrinkingHelper.getDimension(); |
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int expandingCurSize = pExpandingHelper.getDimension(); |
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//System.out.println( "Split Pair Panel:shrink (" + shrinkingCurSize + ") Expand (" + |
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// expandingCurSize + ") SizesBy: " + pDelta ); |
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int shrinkingNewSize = shrinkingCurSize - pDelta; |
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pShrinkingHelper.setDimension( shrinkingNewSize ); |
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if ( pShrinkingHelper.getDimension() != shrinkingNewSize ) { |
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return false; |
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} |
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int expandingNewSize = expandingCurSize + pDelta; |
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pExpandingHelper.setDimension( expandingNewSize ); |
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return true; |
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} |
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} |