litesoft
@ 947
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// This Source Code is in the Public Domain per: http://unlicense.org package org.litesoft.GWT.client.widgets.nonpublic; import java.util.*; import com.google.gwt.user.client.*; import com.google.gwt.user.client.ui.*; public abstract class AbstractSizeableTwoDimensionalPanel extends AbstractSizeableHasAlignmentPanel implements IndexedPanel { /** * Table element. */ private Element tableElem; /** * Table's body. */ private Element bodyElem; private WidgetCollection mChildren = new WidgetCollection( this ); protected AbstractSizeableTwoDimensionalPanel() { tableElem = DOM.createTable(); bodyElem = DOM.createTBody(); DOM.appendChild( tableElem, bodyElem ); setElement( tableElem ); // todo: ... } @Override public boolean anyChildren() { return (mChildren.size() != 0); } // vvvvvvvvvvv HasWidgets /** * Removes all child widgets. */ @Override public void clear() { if ( anyChildren() ) { // todo: ... } } /** * Gets an iterator for the contained widgets. This iterator is required to * implement {@link Iterator#remove()}. */ @SuppressWarnings({"unchecked"}) @Override public Iterator iterator() { return mChildren.iterator(); } /** * Adds a child widget. * * @param pWidget the widget to be added * * @throws UnsupportedOperationException if this method is not supported (most * often this means that a specific overload must be called) */ @Override public void add( Widget pWidget ) { // todo: ... } /** * Removes a child widget. * * @param pWidget the widget to be removed * * @return <code>true</code> if the widget was present */ @Override public boolean remove( Widget pWidget ) { // Make sure this panel actually contains the child widget. if ( !mChildren.contains( pWidget ) ) { return false; } // Disown it. disown( pWidget ); return true; } // ^^^^^^^^^^^ HasWidgets // vvvvvvvvvvv IndexedPanel @Override public Widget getWidget( int pIndex ) { return null; // todo: getChildren().get( pIndex ); } @Override public int getWidgetCount() { return 0; // todo: getChildren().size(); } @Override public int getWidgetIndex( Widget pChild ) { return 0; // todo: getChildren().indexOf( pChild ); } @Override public boolean remove( int pIndex ) { return remove( getWidget( pIndex ) ); } // ^^^^^^^^^^^ IndexedPanel /** * Sets the horizontal alignment of the last cell. * * @param hAlign a constant representing left, center or right alignment * * @see HasAlignment */ public void setCellHorizontalAlignment( HorizontalAlignmentConstant hAlign ) { // if ( m_cellMap.size() == 0 ) // { // throw new IllegalStateException(); // } // // setCellHorizontalAlignment( getCellCount() - 1, hAlign ); } /** * Sets the vertical alignment of the last cell. * * @param vAlign a constant representing top, middle or bottom alignment * * @see HasAlignment */ public void setCellVerticalAlignment( VerticalAlignmentConstant vAlign ) { // if ( m_cellMap.size() == 0 ) // { // throw new IllegalStateException(); // } // // setCellVerticalAlignment( getCellCount() - 1, vAlign ); } public static void setTdHorizontalAlignment( Element td, HorizontalAlignmentConstant hAlign ) { CommonElementHelper.setTDalign( td, hAlign ); } public static void setTdVerticalAlignment( Element td, VerticalAlignmentConstant vAlign ) { CommonElementHelper.setTDvAlign( td, vAlign ); } /** * Gets the column span for the given cell. This is the number of logical * columns covered by the cell. * * @param row the cell's row * @param column the cell's column * * @return the cell's column span * * @throws IndexOutOfBoundsException */ public int getColSpan( int row, int column ) { return DOM.getElementPropertyInt( getElement( row, column ), "colSpan" ); } /** * Gets the row span for the given cell. This is the number of logical rows * covered by the cell. * * @param row the cell's row * @param column the cell's column * * @return the cell's row span * * @throws IndexOutOfBoundsException */ public int getRowSpan( int row, int column ) { return DOM.getElementPropertyInt( getElement( row, column ), "rowSpan" ); } /** * Gets the TD element representing the specified cell. * * @param row the row of the cell to be retrieved * @param column the column of the cell to be retrieved * * @return the column's TD element * * @throws IndexOutOfBoundsException */ public Element getElement( int row, int column ) { checkCellBounds( row, column ); return getCellElement( bodyElem, row, column ); } /** * Bounds checks that the cell exists at the specified location. * * @param row cell's row * @param column cell's column * * @throws IndexOutOfBoundsException */ protected void checkCellBounds( int row, int column ) { checkRowBounds( row ); if ( column < 0 ) { throw new IndexOutOfBoundsException( "Column " + column + " must be non-negative: " + column ); } int cellSize = getCellCount( row ); if ( cellSize <= column ) { throw new IndexOutOfBoundsException( "Column index: " + column + ", Column size: " + getCellCount( row ) ); } } /** * Checks that the row is within the correct bounds. * * @param row row index to check * * @throws IndexOutOfBoundsException */ protected void checkRowBounds( int row ) { int rowSize = getRowCount(); if ( (row >= rowSize) || (row < 0) ) { throw new IndexOutOfBoundsException( "Row index: " + row + ", Row size: " + rowSize ); } } /** * Gets the number of rows present in this table. * * @return the table's row count */ public abstract int getRowCount(); /** * Gets the number of cells in a given row. * * @param row the row whose cells are to be counted * * @return the number of cells present in the row */ public abstract int getCellCount( int row ); /** * Native method to get a cell's element. * * @param table the table element * @param row the row of the cell * @param col the column of the cell * * @return the element */ private native Element getCellElement( Element table, int row, int col ) /*-{ var out = table.rows[row].cells[col]; return (out == null ? null : out); }-*/; @Override protected final Element adopt( Widget w, Element container ) { throw new IllegalStateException( "Inappropriate use of raw adopt( Widget w, Element container )" ); } /** * Do everything to insert pWidget at the appropriate place * * @param pWidget !null */ protected void adopt( Widget pWidget, int pBeforeIndex ) { if ( aboutToAdopt( pWidget, pBeforeIndex ) ) { LLadopt( pWidget, pBeforeIndex ); justAdopted( pWidget, pBeforeIndex ); } } /** * Do everything to remove pWidget * * @param pWidget !null */ @Override protected Element disown( Widget pWidget ) { int index = mChildren.indexOf( pWidget ); if ( index == -1 ) { throw new IllegalStateException( "Attempt to 'disown' widget (" + pWidget + ") not owned by: " + this ); } if ( aboutToDisown( pWidget, index ) ) { LLdisown( pWidget, index ); justDisowned( pWidget, index ); } return null; // We Don't Care } protected void LLdisown( Widget pWidget, int pIndex ) { Element td = abstractSizeablePanel_disown( pWidget ); // remove Widget from td DOM.removeChild( getContainerElement(), unwrap( td ) ); mChildren.remove( pIndex ); } protected void LLadopt( Widget pWidget, int pBeforeIndex ) { pWidget.removeFromParent(); Element td = DOM.createTD(); abstractSizeablePanel_adopt( pWidget, td ); // put Widget in TD DOM.insertChild( getContainerElement(), wrap( td ), pBeforeIndex ); mChildren.insert( pWidget, pBeforeIndex ); } protected Element abstractSizeablePanel_disown( Widget pWidget ) { return super.disown( pWidget ); } protected void abstractSizeablePanel_adopt( Widget pWidget, Element pContainer ) { super.adopt( pWidget, pContainer ); } /** * Override point for special behavior of index based addition, before adding. * Could throw an exception! * * @return true if OK to add */ @SuppressWarnings({"UnusedParameters"}) protected boolean aboutToAdopt( Widget pWidget, int pBeforeIndex ) { return true; } /** * Override point for special behavior of index based addition. * Should not throw an exception! */ @SuppressWarnings({"UnusedParameters"}) protected void justAdopted( Widget pWidget, int pWidgetIndex ) { } /** * Override point for special behavior of index based removal, before removing. * Could throw an exception! * * @return true if OK to add */ @SuppressWarnings({"UnusedParameters"}) protected boolean aboutToDisown( Widget pWidget, int pBeforeIndex ) { return true; } /** * Override point for special behavior of index based removal. * Should not throw an exception! */ @SuppressWarnings({"UnusedParameters"}) protected void justDisowned( Widget pWidget, int pWidgetIndex ) { } abstract protected Element unwrap( Element pTD ); abstract protected Element wrap( Element pTD ); } |
Commits for litesoft/trunk/Java/GWT/Client/src/org/litesoft/GWT/client/widgets/nonpublic/AbstractSizeableTwoDimensionalPanel.java
Revision | Author | Commited | Message |
---|---|---|---|
947 Diff | GeorgeS | Fri 06 Jun, 2014 23:36:56 +0000 | Correct Spelling of package! |
243 Diff | GeorgeS | Sun 05 Jun, 2011 20:29:12 +0000 | |
151 Diff | GeorgeS | Thu 17 Mar, 2011 04:16:22 +0000 | |
49 Diff | GeorgeS | Mon 12 Apr, 2010 02:59:10 +0000 | License Text |
23 Diff | GeorgeS | Wed 24 Feb, 2010 00:34:32 +0000 | |
2 | GeorgeS | Sun 07 Feb, 2010 12:50:58 +0000 |