root / src / gr / grnet / pithos / web / client / DisplayHelper.java @ 63366925
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/*
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* Copyright 2011 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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package gr.grnet.pithos.web.client; |
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import java.util.List; |
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import com.google.gwt.user.client.ui.FlexTable; |
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import com.google.gwt.user.client.ui.ListBox; |
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/**
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* A helper class with static methods that manipulate display
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* widgets in various useful ways, not available in GWT.
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*
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*/
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public class DisplayHelper { |
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/**
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* A flag that denotes that no selection should be made while
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* displaying the rows of a table.
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*/
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public static final int NO_SELECTION = -1; |
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/**
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* Clear any current selection in the specified ListBox.
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*/
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public static void clearSelections(ListBox listBox) { |
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for (int i=0; i<listBox.getItemCount(); i++) |
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if (listBox.isItemSelected(i))
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listBox.setItemSelected(i, false);
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} |
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/**
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* Select the item in the listBox whose value matches the provided
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* value.
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*/
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public static void selectMatch(ListBox listBox, String value) { |
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for (int i=0; i<listBox.getItemCount(); i++) |
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if (listBox.getValue(i).equals(value))
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listBox.setItemSelected(i, true);
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else
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listBox.setItemSelected(i, false);
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} |
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/**
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* Select the items in the listBox whose value matches the provided
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* value list. Every value that is matched in the listBox is removed
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* from the value list, in order to let the caller know what values
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* were not matched. Therefore the caller must be prepared for the
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* value list to be modified.
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*
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* @param listBox the ListBox
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* @param values the list of values to be selected
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*/
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public static void selectMultiMatch(ListBox listBox, List values) { |
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for (int i=0; i<listBox.getItemCount(); i++) |
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if (values.contains(listBox.getValue(i))) {
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listBox.setItemSelected(i, true);
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values.remove(listBox.getValue(i)); |
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} else
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listBox.setItemSelected(i, false);
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} |
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public static native void log(String message) /*-{ |
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var logger = $wnd.console;
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if (logger && logger.debug)
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logger.debug(message);
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else if (logger && logger.log)
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logger.log(message);
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}-*/;
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/**
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* Make the specified row look like selected or not, according to the
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* <code>selected</code> flag.
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*
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* @param row the row number in the list of entries (i.e. ignoring the header line)
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* @param selected the flag that denotes whether the <code>styleName</code> should
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* be added or removed
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* @param styleName the name of the CSS style
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*/
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public static void styleRow(final FlexTable table, final int row, final boolean selected, String styleName) { |
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if (row != -1) |
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if (selected)
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table.getRowFormatter().addStyleName(row + 1, styleName);
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else
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table.getRowFormatter().removeStyleName(row + 1, styleName);
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} |
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/**
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* Select the specified row in the table. This entails modifying its style
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* as well as the style of the previously selected row.
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*
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* @param table the FlexTable widget
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* @param row the newly selected row
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* @param previousRow the previously selected row
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* @param styleName the name of the CSS style
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* @return the newly selected row
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*/
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public static int selectRow(final FlexTable table, final int row, final int previousRow, String styleName) { |
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// Reset the style of the previously selected row.
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styleRow(table, previousRow, false, styleName);
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// Select the row that was clicked.
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styleRow(table, row, true, styleName);
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return row;
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} |
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/**
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* The implementation of this trim method also checks for
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* no brake space characters (nbsp) = '\00A0'
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* and removes them
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*
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* @param input
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* @return the new trimmed string without whitespace or no brake space
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*/
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public static native String trim(String input) /*-{ |
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if(input.length == 0)
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return input;
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if((input[0]||input[input.length-1]) != '\u0020' && (input[0]||input[input.length-1]) != '\u00A0')
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return input;
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var r1 = input.replace(/^(\s*)/, '');
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var r2 = r1.replace(/\s*$/, '');
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return r2;
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}-*/;
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} |