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com.google.gwt.uibinder.elementparsers.GridParser Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.uibinder.elementparsers;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.uibinder.rebind.FieldWriter;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
import java.util.ArrayList;
import java.util.List;
/**
* A parser for Grid rows and cells.
*/
public class GridParser implements ElementParser {
private static class CellContent {
private String tagName;
private String content;
private String styleName;
public CellContent(String tagName, String content, String styleName) {
this.tagName = tagName;
this.content = content;
this.styleName = styleName;
}
public String getContent() {
return this.content;
}
public String getStyleName() {
return styleName;
}
public String getTagName() {
return this.tagName;
}
}
private static class RowContent {
private List columns = new ArrayList();
private String styleName;
private void addColumn(CellContent column) {
columns.add(column);
}
public List getColumns() {
return columns;
}
public String getStyleName() {
return styleName;
}
public void setStyleName(String styleName) {
this.styleName = styleName;
}
}
private static class Size {
private int rows;
private int columns;
public Size(int rows, int columns) {
this.rows = rows;
this.columns = columns;
}
public int getColumns() {
return this.columns;
}
public int getRows() {
return this.rows;
}
}
private static final String ROW_TAG = "row";
private static final String CELL_TAG = "cell";
private static final String CUSTOMCELL_TAG = "customCell";
private static final String STYLE_NAME_ATTRIBUTE = "styleName";
public void parse(XMLElement elem, String fieldName, JClassType type,
UiBinderWriter writer) throws UnableToCompleteException {
List matrix = new ArrayList();
parseRows(elem, fieldName, writer, matrix);
Size size = getMatrixSize(matrix);
if (size.getRows() > 0 || size.getColumns() > 0) {
writer.addStatement("%s.resize(%s, %s);", fieldName,
Integer.toString(size.getRows()), Integer.toString(size.getColumns()));
for (RowContent row : matrix) {
if ((row.getStyleName() != null) && (!row.getStyleName().isEmpty())) {
writer.addStatement("%s.getRowFormatter().setStyleName(%s, %s);",
fieldName,
matrix.indexOf(row),
row.getStyleName());
}
for (CellContent column : row.getColumns()) {
if (column.getTagName().equals(CELL_TAG)) {
writer.addStatement("%s.setHTML(%s, %s, %s);", fieldName,
Integer.toString(matrix.indexOf(row)),
Integer.toString(row.getColumns().indexOf(column)),
writer.declareTemplateCall(column.getContent(), fieldName));
}
if (column.getTagName().equals(CUSTOMCELL_TAG)) {
writer.addStatement("%s.setWidget(%s, %s, %s);", fieldName,
Integer.toString(matrix.indexOf(row)),
Integer.toString(row.getColumns().indexOf(column)), column.getContent());
}
if ((column.getStyleName() != null) && (!column.getStyleName().isEmpty())) {
writer.addStatement("%s.getCellFormatter().setStyleName(%s, %s, %s);",
fieldName,
matrix.indexOf(row),
row.getColumns().indexOf(column),
column.getStyleName());
}
}
}
}
}
private Size getMatrixSize(List matrix) {
int maxColumns = 0;
for (RowContent row : matrix) {
maxColumns = (row.getColumns().size() > maxColumns) ? row.getColumns().size() : maxColumns;
}
return new Size(matrix.size(), maxColumns);
}
private void parseColumns(String fieldName, UiBinderWriter writer,
RowContent row, XMLElement child)
throws UnableToCompleteException {
String tagName;
for (XMLElement cell : child.consumeChildElements()) {
tagName = cell.getLocalName();
if (!tagName.equals(CELL_TAG) && !tagName.equals(CUSTOMCELL_TAG)
|| !cell.getPrefix().equals(child.getPrefix())) {
writer.die("Grid's row tag in %s may only contain %s or %s element.",
fieldName, CELL_TAG, CUSTOMCELL_TAG);
}
CellContent newColumn = null;
String styleName = cell.consumeStringAttribute(STYLE_NAME_ATTRIBUTE, null);
if (tagName.equals(CELL_TAG)) {
HtmlInterpreter htmlInt = HtmlInterpreter.newInterpreterForUiObject(
writer, fieldName);
String html = cell.consumeInnerHtml(htmlInt);
newColumn = new CellContent(tagName, html, styleName);
}
if (tagName.equals(CUSTOMCELL_TAG)) {
FieldWriter field = writer.parseElementToField(cell.consumeSingleChildElement());
newColumn = new CellContent(tagName, field.getNextReference(),
styleName);
}
row.addColumn(newColumn);
}
}
private void parseRows(XMLElement elem, String fieldName,
UiBinderWriter writer, List matrix)
throws UnableToCompleteException {
for (XMLElement child : elem.consumeChildElements()) {
String tagName = child.getLocalName();
if (!tagName.equals(ROW_TAG)
|| !elem.getPrefix().equals(child.getPrefix())) {
writer.die(
"%1$s:Grid elements must contain only %1$s:%2$s children, found %3$s:%4$s",
elem.getPrefix(), ROW_TAG, child.getPrefix(), tagName);
}
RowContent newRow = new RowContent();
newRow.setStyleName(child.consumeStringAttribute(STYLE_NAME_ATTRIBUTE, null));
matrix.add(newRow);
parseColumns(fieldName, writer, newRow, child);
}
}
}
