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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * 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.vaadin.client.connectors;
-
- import java.util.ArrayList;
- import java.util.Arrays;
- import java.util.Collection;
- import java.util.HashMap;
- import java.util.HashSet;
- import java.util.Iterator;
- import java.util.LinkedHashSet;
- import java.util.List;
- import java.util.Map;
- import java.util.Set;
- import java.util.logging.Logger;
-
- import com.google.gwt.core.client.Scheduler;
- import com.google.gwt.core.client.Scheduler.ScheduledCommand;
- import com.google.gwt.dom.client.NativeEvent;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.client.ComponentConnector;
- import com.vaadin.client.ConnectorHierarchyChangeEvent;
- import com.vaadin.client.MouseEventDetailsBuilder;
- import com.vaadin.client.annotations.OnStateChange;
- import com.vaadin.client.communication.StateChangeEvent;
- import com.vaadin.client.connectors.RpcDataSourceConnector.RpcDataSource;
- import com.vaadin.client.data.DataSource.RowHandle;
- import com.vaadin.client.renderers.Renderer;
- import com.vaadin.client.ui.AbstractFieldConnector;
- import com.vaadin.client.ui.AbstractHasComponentsConnector;
- import com.vaadin.client.ui.SimpleManagedLayout;
- import com.vaadin.client.widget.grid.CellReference;
- import com.vaadin.client.widget.grid.CellStyleGenerator;
- import com.vaadin.client.widget.grid.EditorHandler;
- import com.vaadin.client.widget.grid.RowReference;
- import com.vaadin.client.widget.grid.RowStyleGenerator;
- import com.vaadin.client.widget.grid.events.BodyClickHandler;
- import com.vaadin.client.widget.grid.events.BodyDoubleClickHandler;
- import com.vaadin.client.widget.grid.events.GridClickEvent;
- import com.vaadin.client.widget.grid.events.GridDoubleClickEvent;
- import com.vaadin.client.widget.grid.events.SelectAllEvent;
- import com.vaadin.client.widget.grid.events.SelectAllHandler;
- import com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel;
- import com.vaadin.client.widget.grid.selection.SelectionEvent;
- import com.vaadin.client.widget.grid.selection.SelectionHandler;
- import com.vaadin.client.widget.grid.selection.SelectionModel;
- import com.vaadin.client.widget.grid.selection.SelectionModelMulti;
- import com.vaadin.client.widget.grid.selection.SelectionModelNone;
- import com.vaadin.client.widget.grid.selection.SelectionModelSingle;
- import com.vaadin.client.widget.grid.sort.SortEvent;
- import com.vaadin.client.widget.grid.sort.SortHandler;
- import com.vaadin.client.widget.grid.sort.SortOrder;
- import com.vaadin.client.widgets.Grid;
- import com.vaadin.client.widgets.Grid.Column;
- import com.vaadin.client.widgets.Grid.FooterCell;
- import com.vaadin.client.widgets.Grid.FooterRow;
- import com.vaadin.client.widgets.Grid.HeaderCell;
- import com.vaadin.client.widgets.Grid.HeaderRow;
- import com.vaadin.shared.data.sort.SortDirection;
- import com.vaadin.shared.ui.Connect;
- import com.vaadin.shared.ui.grid.EditorClientRpc;
- import com.vaadin.shared.ui.grid.EditorServerRpc;
- import com.vaadin.shared.ui.grid.GridClientRpc;
- import com.vaadin.shared.ui.grid.GridColumnState;
- import com.vaadin.shared.ui.grid.GridConstants;
- import com.vaadin.shared.ui.grid.GridServerRpc;
- import com.vaadin.shared.ui.grid.GridState;
- import com.vaadin.shared.ui.grid.GridState.SharedSelectionMode;
- import com.vaadin.shared.ui.grid.GridStaticSectionState;
- import com.vaadin.shared.ui.grid.GridStaticSectionState.CellState;
- import com.vaadin.shared.ui.grid.GridStaticSectionState.RowState;
- import com.vaadin.shared.ui.grid.ScrollDestination;
-
- import elemental.json.JsonObject;
- import elemental.json.JsonValue;
-
- /**
- * Connects the client side {@link Grid} widget with the server side
- * {@link com.vaadin.ui.components.grid.Grid} component.
- * <p>
- * The Grid is typed to JSONObject. The structure of the JSONObject is described
- * at {@link com.vaadin.shared.data.DataProviderRpc#setRowData(int, List)
- * DataProviderRpc.setRowData(int, List)}.
- *
- * @since 7.4
- * @author Vaadin Ltd
- */
- @Connect(com.vaadin.ui.Grid.class)
- public class GridConnector extends AbstractHasComponentsConnector implements
- SimpleManagedLayout {
-
- private static final class CustomCellStyleGenerator implements
- CellStyleGenerator<JsonObject> {
- @Override
- public String getStyle(CellReference<JsonObject> cellReference) {
- JsonObject row = cellReference.getRow();
- if (!row.hasKey(GridState.JSONKEY_CELLSTYLES)) {
- return null;
- }
-
- Column<?, JsonObject> column = cellReference.getColumn();
- if (!(column instanceof CustomGridColumn)) {
- // Selection checkbox column
- return null;
- }
- CustomGridColumn c = (CustomGridColumn) column;
-
- JsonObject cellStylesObject = row
- .getObject(GridState.JSONKEY_CELLSTYLES);
- assert cellStylesObject != null;
-
- if (cellStylesObject.hasKey(c.id)) {
- return cellStylesObject.getString(c.id);
- } else {
- return null;
- }
- }
-
- }
-
- private static final class CustomRowStyleGenerator implements
- RowStyleGenerator<JsonObject> {
- @Override
- public String getStyle(RowReference<JsonObject> rowReference) {
- JsonObject row = rowReference.getRow();
- if (row.hasKey(GridState.JSONKEY_ROWSTYLE)) {
- return row.getString(GridState.JSONKEY_ROWSTYLE);
- } else {
- return null;
- }
- }
-
- }
-
- /**
- * Custom implementation of the custom grid column using a JSONObject to
- * represent the cell value and String as a column type.
- */
- private class CustomGridColumn extends Grid.Column<Object, JsonObject> {
-
- private final String id;
-
- private AbstractRendererConnector<Object> rendererConnector;
-
- private AbstractFieldConnector editorConnector;
-
- public CustomGridColumn(String id,
- AbstractRendererConnector<Object> rendererConnector) {
- super(rendererConnector.getRenderer());
- this.rendererConnector = rendererConnector;
- this.id = id;
- }
-
- /**
- * Sets a new renderer for this column object
- *
- * @param rendererConnector
- * a renderer connector object
- */
- public void setRenderer(
- AbstractRendererConnector<Object> rendererConnector) {
- setRenderer(rendererConnector.getRenderer());
- this.rendererConnector = rendererConnector;
- }
-
- @Override
- public Object getValue(final JsonObject obj) {
- final JsonObject rowData = obj.getObject(GridState.JSONKEY_DATA);
-
- if (rowData.hasKey(id)) {
- final JsonValue columnValue = rowData.get(id);
-
- return rendererConnector.decode(columnValue);
- }
-
- return null;
- }
-
- private AbstractFieldConnector getEditorConnector() {
- return editorConnector;
- }
-
- private void setEditorConnector(AbstractFieldConnector editorConnector) {
- this.editorConnector = editorConnector;
- }
- }
-
- /*
- * An editor handler using Vaadin RPC to manage the editor state.
- */
- private class CustomEditorHandler implements EditorHandler<JsonObject> {
-
- private EditorServerRpc rpc = getRpcProxy(EditorServerRpc.class);
-
- private EditorRequest<JsonObject> currentRequest = null;
- private boolean serverInitiated = false;
-
- public CustomEditorHandler() {
- registerRpc(EditorClientRpc.class, new EditorClientRpc() {
-
- @Override
- public void bind(final int rowIndex) {
- // call this finally to avoid issues with editing on init
- Scheduler.get().scheduleFinally(new ScheduledCommand() {
- @Override
- public void execute() {
- GridConnector.this.getWidget().editRow(rowIndex);
- }
- });
- }
-
- @Override
- public void cancel(int rowIndex) {
- serverInitiated = true;
- GridConnector.this.getWidget().cancelEditor();
- }
-
- @Override
- public void confirmBind(final boolean bindSucceeded) {
- endRequest(bindSucceeded, null, null);
- }
-
- @Override
- public void confirmSave(boolean saveSucceeded,
- String errorMessage, List<String> errorColumnsIds) {
- endRequest(saveSucceeded, errorMessage, errorColumnsIds);
- }
- });
- }
-
- @Override
- public void bind(EditorRequest<JsonObject> request) {
- startRequest(request);
- rpc.bind(request.getRowIndex());
- }
-
- @Override
- public void save(EditorRequest<JsonObject> request) {
- startRequest(request);
- rpc.save(request.getRowIndex());
- }
-
- @Override
- public void cancel(EditorRequest<JsonObject> request) {
- if (!handleServerInitiated(request)) {
- // No startRequest as we don't get (or need)
- // a confirmation from the server
- rpc.cancel(request.getRowIndex());
- }
- }
-
- @Override
- public Widget getWidget(Grid.Column<?, JsonObject> column) {
- assert column != null;
-
- if (column instanceof CustomGridColumn) {
- AbstractFieldConnector c = ((CustomGridColumn) column)
- .getEditorConnector();
- return c != null ? c.getWidget() : null;
- } else {
- throw new IllegalStateException("Unexpected column type: "
- + column.getClass().getName());
- }
- }
-
- /**
- * Used to handle the case where the editor calls us because it was
- * invoked by the server via RPC and not by the client. In that case,
- * the request can be simply synchronously completed.
- *
- * @param request
- * the request object
- * @return true if the request was originally triggered by the server,
- * false otherwise
- */
- private boolean handleServerInitiated(EditorRequest<?> request) {
- assert request != null : "Cannot handle null request";
- assert currentRequest == null : "Earlier request not yet finished";
-
- if (serverInitiated) {
- serverInitiated = false;
- request.success();
- return true;
- } else {
- return false;
- }
- }
-
- private void startRequest(EditorRequest<JsonObject> request) {
- assert currentRequest == null : "Earlier request not yet finished";
-
- currentRequest = request;
- }
-
- private void endRequest(boolean succeeded, String errorMessage,
- List<String> errorColumnsIds) {
- assert currentRequest != null : "Current request was null";
- /*
- * Clear current request first to ensure the state is valid if
- * another request is made in the callback.
- */
- EditorRequest<JsonObject> request = currentRequest;
- currentRequest = null;
- if (succeeded) {
- request.success();
- } else {
- Collection<Column<?, JsonObject>> errorColumns;
- if (errorColumnsIds != null) {
- errorColumns = new ArrayList<Grid.Column<?, JsonObject>>();
- for (String colId : errorColumnsIds) {
- errorColumns.add(columnIdToColumn.get(colId));
- }
- } else {
- errorColumns = null;
- }
-
- request.failure(errorMessage, errorColumns);
- }
- }
- }
-
- private class ItemClickHandler implements BodyClickHandler,
- BodyDoubleClickHandler {
-
- @Override
- public void onClick(GridClickEvent event) {
- if (hasEventListener(GridConstants.ITEM_CLICK_EVENT_ID)) {
- fireItemClick(event.getTargetCell(), event.getNativeEvent());
- }
- }
-
- @Override
- public void onDoubleClick(GridDoubleClickEvent event) {
- if (hasEventListener(GridConstants.ITEM_CLICK_EVENT_ID)) {
- fireItemClick(event.getTargetCell(), event.getNativeEvent());
- }
- }
-
- private void fireItemClick(CellReference<?> cell, NativeEvent mouseEvent) {
- String rowKey = getRowKey((JsonObject) cell.getRow());
- String columnId = getColumnId(cell.getColumn());
- getRpcProxy(GridServerRpc.class)
- .itemClick(
- rowKey,
- columnId,
- MouseEventDetailsBuilder
- .buildMouseEventDetails(mouseEvent));
- }
- }
-
- /**
- * Maps a generated column id to a grid column instance
- */
- private Map<String, CustomGridColumn> columnIdToColumn = new HashMap<String, CustomGridColumn>();
-
- private AbstractRowHandleSelectionModel<JsonObject> selectionModel;
- private Set<String> selectedKeys = new LinkedHashSet<String>();
- private List<String> columnOrder = new ArrayList<String>();
-
- /**
- * updateFromState is set to true when {@link #updateSelectionFromState()}
- * makes changes to selection. This flag tells the
- * {@code internalSelectionChangeHandler} to not send same data straight
- * back to server. Said listener sets it back to false when handling that
- * event.
- */
- private boolean updatedFromState = false;
-
- private RpcDataSource dataSource;
-
- private SelectionHandler<JsonObject> internalSelectionChangeHandler = new SelectionHandler<JsonObject>() {
- @Override
- public void onSelect(SelectionEvent<JsonObject> event) {
- if (event.isBatchedSelection()) {
- return;
- }
- if (!updatedFromState) {
- for (JsonObject row : event.getRemoved()) {
- selectedKeys.remove(dataSource.getRowKey(row));
- }
-
- for (JsonObject row : event.getAdded()) {
- selectedKeys.add(dataSource.getRowKey(row));
- }
-
- getRpcProxy(GridServerRpc.class).select(
- new ArrayList<String>(selectedKeys));
- } else {
- updatedFromState = false;
- }
- }
- };
-
- private ItemClickHandler itemClickHandler = new ItemClickHandler();
-
- private String lastKnownTheme = null;
-
- @Override
- @SuppressWarnings("unchecked")
- public Grid<JsonObject> getWidget() {
- return (Grid<JsonObject>) super.getWidget();
- }
-
- @Override
- public GridState getState() {
- return (GridState) super.getState();
- }
-
- @Override
- protected void init() {
- super.init();
-
- // All scroll RPC calls are executed finally to avoid issues on init
- registerRpc(GridClientRpc.class, new GridClientRpc() {
- @Override
- public void scrollToStart() {
- Scheduler.get().scheduleFinally(new ScheduledCommand() {
- @Override
- public void execute() {
- getWidget().scrollToStart();
- }
- });
- }
-
- @Override
- public void scrollToEnd() {
- Scheduler.get().scheduleFinally(new ScheduledCommand() {
- @Override
- public void execute() {
- getWidget().scrollToEnd();
- }
- });
- }
-
- @Override
- public void scrollToRow(final int row,
- final ScrollDestination destination) {
- Scheduler.get().scheduleFinally(new ScheduledCommand() {
- @Override
- public void execute() {
- getWidget().scrollToRow(row, destination);
- }
- });
- }
-
- @Override
- public void recalculateColumnWidths() {
- getWidget().recalculateColumnWidths();
- }
- });
-
- getWidget().addSelectionHandler(internalSelectionChangeHandler);
-
- /* Item click events */
- getWidget().addBodyClickHandler(itemClickHandler);
- getWidget().addBodyDoubleClickHandler(itemClickHandler);
-
- getWidget().addSortHandler(new SortHandler<JsonObject>() {
- @Override
- public void sort(SortEvent<JsonObject> event) {
- List<SortOrder> order = event.getOrder();
- String[] columnIds = new String[order.size()];
- SortDirection[] directions = new SortDirection[order.size()];
- for (int i = 0; i < order.size(); i++) {
- SortOrder sortOrder = order.get(i);
- CustomGridColumn column = (CustomGridColumn) sortOrder
- .getColumn();
- columnIds[i] = column.id;
-
- directions[i] = sortOrder.getDirection();
- }
-
- if (!Arrays.equals(columnIds, getState().sortColumns)
- || !Arrays.equals(directions, getState().sortDirs)) {
- // Report back to server if changed
- getRpcProxy(GridServerRpc.class).sort(columnIds,
- directions, event.isUserOriginated());
- }
- }
- });
-
- getWidget().addSelectAllHandler(new SelectAllHandler<JsonObject>() {
-
- @Override
- public void onSelectAll(SelectAllEvent<JsonObject> event) {
- getRpcProxy(GridServerRpc.class).selectAll();
- }
-
- });
-
- getWidget().setEditorHandler(new CustomEditorHandler());
- getLayoutManager().registerDependency(this, getWidget().getElement());
- layout();
- }
-
- @Override
- public void onStateChanged(final StateChangeEvent stateChangeEvent) {
- super.onStateChanged(stateChangeEvent);
-
- // Column updates
- if (stateChangeEvent.hasPropertyChanged("columns")) {
-
- // Remove old columns
- purgeRemovedColumns();
-
- // Add new columns
- for (GridColumnState state : getState().columns) {
- if (!columnIdToColumn.containsKey(state.id)) {
- addColumnFromStateChangeEvent(state);
- }
- updateColumnFromState(columnIdToColumn.get(state.id), state);
- }
- }
-
- if (stateChangeEvent.hasPropertyChanged("columnOrder")) {
- if (orderNeedsUpdate(getState().columnOrder)) {
- updateColumnOrderFromState(getState().columnOrder);
- }
- }
-
- // Header and footer
- if (stateChangeEvent.hasPropertyChanged("header")) {
- updateHeaderFromState(getState().header);
- }
-
- if (stateChangeEvent.hasPropertyChanged("footer")) {
- updateFooterFromState(getState().footer);
- }
-
- // Selection
- if (stateChangeEvent.hasPropertyChanged("selectionMode")) {
- onSelectionModeChange();
- updateSelectDeselectAllowed();
- } else if (stateChangeEvent
- .hasPropertyChanged("singleSelectDeselectAllowed")) {
- updateSelectDeselectAllowed();
- }
-
- if (stateChangeEvent.hasPropertyChanged("selectedKeys")) {
- updateSelectionFromState();
- }
-
- // Sorting
- if (stateChangeEvent.hasPropertyChanged("sortColumns")
- || stateChangeEvent.hasPropertyChanged("sortDirs")) {
- onSortStateChange();
- }
-
- // Editor
- if (stateChangeEvent.hasPropertyChanged("editorEnabled")) {
- getWidget().setEditorEnabled(getState().editorEnabled);
- }
-
- // Frozen columns
- if (stateChangeEvent.hasPropertyChanged("frozenColumnCount")) {
- getWidget().setFrozenColumnCount(getState().frozenColumnCount);
- }
-
- // Theme features
- String activeTheme = getConnection().getUIConnector().getActiveTheme();
- if (lastKnownTheme == null) {
- lastKnownTheme = activeTheme;
- } else if (!lastKnownTheme.equals(activeTheme)) {
- getWidget().resetSizesFromDom();
- lastKnownTheme = activeTheme;
- }
- }
-
- private void updateSelectDeselectAllowed() {
- SelectionModel<JsonObject> model = getWidget().getSelectionModel();
- if (model instanceof SelectionModel.Single<?>) {
- ((SelectionModel.Single<?>) model)
- .setDeselectAllowed(getState().singleSelectDeselectAllowed);
- }
- }
-
- private void updateColumnOrderFromState(List<String> stateColumnOrder) {
- CustomGridColumn[] columns = new CustomGridColumn[stateColumnOrder
- .size()];
- int i = 0;
- for (String id : stateColumnOrder) {
- columns[i] = columnIdToColumn.get(id);
- i++;
- }
- getWidget().setColumnOrder(columns);
- columnOrder = stateColumnOrder;
- }
-
- private boolean orderNeedsUpdate(List<String> stateColumnOrder) {
- if (stateColumnOrder.size() == columnOrder.size()) {
- for (int i = 0; i < columnOrder.size(); ++i) {
- if (!stateColumnOrder.get(i).equals(columnOrder.get(i))) {
- return true;
- }
- }
- return false;
- }
- return true;
- }
-
- private void updateHeaderFromState(GridStaticSectionState state) {
- getWidget().setHeaderVisible(state.visible);
-
- while (getWidget().getHeaderRowCount() > 0) {
- getWidget().removeHeaderRow(0);
- }
-
- for (RowState rowState : state.rows) {
- HeaderRow row = getWidget().appendHeaderRow();
-
- for (CellState cellState : rowState.cells) {
- CustomGridColumn column = columnIdToColumn
- .get(cellState.columnId);
- updateHeaderCellFromState(row.getCell(column), cellState);
- }
-
- for (Set<String> group : rowState.cellGroups.keySet()) {
- Grid.Column<?, ?>[] columns = new Grid.Column<?, ?>[group
- .size()];
- CellState cellState = rowState.cellGroups.get(group);
-
- int i = 0;
- for (String columnId : group) {
- columns[i] = columnIdToColumn.get(columnId);
- i++;
- }
-
- // Set state to be the same as first in group.
- updateHeaderCellFromState(row.join(columns), cellState);
- }
-
- if (rowState.defaultRow) {
- getWidget().setDefaultHeaderRow(row);
- }
-
- row.setStyleName(rowState.styleName);
- }
- }
-
- private void updateHeaderCellFromState(HeaderCell cell, CellState cellState) {
- switch (cellState.type) {
- case TEXT:
- cell.setText(cellState.text);
- break;
- case HTML:
- cell.setHtml(cellState.html);
- break;
- case WIDGET:
- ComponentConnector connector = (ComponentConnector) cellState.connector;
- cell.setWidget(connector.getWidget());
- break;
- default:
- throw new IllegalStateException("unexpected cell type: "
- + cellState.type);
- }
- cell.setStyleName(cellState.styleName);
- }
-
- private void updateFooterFromState(GridStaticSectionState state) {
- getWidget().setFooterVisible(state.visible);
-
- while (getWidget().getFooterRowCount() > 0) {
- getWidget().removeFooterRow(0);
- }
-
- for (RowState rowState : state.rows) {
- FooterRow row = getWidget().appendFooterRow();
-
- for (CellState cellState : rowState.cells) {
- CustomGridColumn column = columnIdToColumn
- .get(cellState.columnId);
- updateFooterCellFromState(row.getCell(column), cellState);
- }
-
- for (Set<String> group : rowState.cellGroups.keySet()) {
- Grid.Column<?, ?>[] columns = new Grid.Column<?, ?>[group
- .size()];
- CellState cellState = rowState.cellGroups.get(group);
-
- int i = 0;
- for (String columnId : group) {
- columns[i] = columnIdToColumn.get(columnId);
- i++;
- }
-
- // Set state to be the same as first in group.
- updateFooterCellFromState(row.join(columns), cellState);
- }
-
- row.setStyleName(rowState.styleName);
- }
- }
-
- private void updateFooterCellFromState(FooterCell cell, CellState cellState) {
- switch (cellState.type) {
- case TEXT:
- cell.setText(cellState.text);
- break;
- case HTML:
- cell.setHtml(cellState.html);
- break;
- case WIDGET:
- ComponentConnector connector = (ComponentConnector) cellState.connector;
- cell.setWidget(connector.getWidget());
- break;
- default:
- throw new IllegalStateException("unexpected cell type: "
- + cellState.type);
- }
- cell.setStyleName(cellState.styleName);
- }
-
- /**
- * Updates a column from a state change event.
- *
- * @param columnIndex
- * The index of the column to update
- */
- private void updateColumnFromStateChangeEvent(GridColumnState columnState) {
- CustomGridColumn column = columnIdToColumn.get(columnState.id);
- updateColumnFromState(column, columnState);
- }
-
- /**
- * Adds a new column to the grid widget from a state change event
- *
- * @param columnIndex
- * The index of the column, according to how it
- */
- private void addColumnFromStateChangeEvent(GridColumnState state) {
- @SuppressWarnings("unchecked")
- CustomGridColumn column = new CustomGridColumn(state.id,
- ((AbstractRendererConnector<Object>) state.rendererConnector));
- columnIdToColumn.put(state.id, column);
-
- /*
- * Add column to grid. Reordering is handled as a separate problem.
- */
- getWidget().addColumn(column);
- columnOrder.add(state.id);
- }
-
- /**
- * If we have a selection column renderer, we need to offset the index by
- * one when referring to the column index in the widget.
- */
- private int getWidgetColumnIndex(final int columnIndex) {
- Renderer<Boolean> selectionColumnRenderer = getWidget()
- .getSelectionModel().getSelectionColumnRenderer();
- int widgetColumnIndex = columnIndex;
- if (selectionColumnRenderer != null) {
- widgetColumnIndex++;
- }
- return widgetColumnIndex;
- }
-
- /**
- * Updates the column values from a state
- *
- * @param column
- * The column to update
- * @param state
- * The state to get the data from
- */
- @SuppressWarnings("unchecked")
- private static void updateColumnFromState(CustomGridColumn column,
- GridColumnState state) {
- column.setWidth(state.width);
- column.setMinimumWidth(state.minWidth);
- column.setMaximumWidth(state.maxWidth);
- column.setExpandRatio(state.expandRatio);
-
- assert state.rendererConnector instanceof AbstractRendererConnector : "GridColumnState.rendererConnector is invalid (not subclass of AbstractRendererConnector)";
- column.setRenderer((AbstractRendererConnector<Object>) state.rendererConnector);
-
- column.setSortable(state.sortable);
- column.setEditable(state.editable);
- column.setEditorConnector((AbstractFieldConnector) state.editorConnector);
- }
-
- /**
- * Removes any orphan columns that has been removed from the state from the
- * grid
- */
- private void purgeRemovedColumns() {
-
- // Get columns still registered in the state
- Set<String> columnsInState = new HashSet<String>();
- for (GridColumnState columnState : getState().columns) {
- columnsInState.add(columnState.id);
- }
-
- // Remove column no longer in state
- Iterator<String> columnIdIterator = columnIdToColumn.keySet()
- .iterator();
- while (columnIdIterator.hasNext()) {
- String id = columnIdIterator.next();
- if (!columnsInState.contains(id)) {
- CustomGridColumn column = columnIdToColumn.get(id);
- columnIdIterator.remove();
- getWidget().removeColumn(column);
- columnOrder.remove(id);
- }
- }
- }
-
- public void setDataSource(RpcDataSource dataSource) {
- this.dataSource = dataSource;
- getWidget().setDataSource(this.dataSource);
- }
-
- private void onSelectionModeChange() {
- SharedSelectionMode mode = getState().selectionMode;
- if (mode == null) {
- getLogger().fine("ignored mode change");
- return;
- }
-
- AbstractRowHandleSelectionModel<JsonObject> model = createSelectionModel(mode);
- if (selectionModel == null
- || !model.getClass().equals(selectionModel.getClass())) {
- selectionModel = model;
- getWidget().setSelectionModel(model);
- selectedKeys.clear();
- }
- }
-
- @OnStateChange("hasCellStyleGenerator")
- private void onCellStyleGeneratorChange() {
- if (getState().hasCellStyleGenerator) {
- getWidget().setCellStyleGenerator(new CustomCellStyleGenerator());
- } else {
- getWidget().setCellStyleGenerator(null);
- }
- }
-
- @OnStateChange("hasRowStyleGenerator")
- private void onRowStyleGeneratorChange() {
- if (getState().hasRowStyleGenerator) {
- getWidget().setRowStyleGenerator(new CustomRowStyleGenerator());
- } else {
- getWidget().setRowStyleGenerator(null);
- }
- }
-
- private void updateSelectionFromState() {
- boolean changed = false;
-
- List<String> stateKeys = getState().selectedKeys;
-
- // find new deselections
- for (String key : selectedKeys) {
- if (!stateKeys.contains(key)) {
- changed = true;
- deselectByHandle(dataSource.getHandleByKey(key));
- }
- }
-
- // find new selections
- for (String key : stateKeys) {
- if (!selectedKeys.contains(key)) {
- changed = true;
- selectByHandle(dataSource.getHandleByKey(key));
- }
- }
-
- /*
- * A defensive copy in case the collection in the state is mutated
- * instead of re-assigned.
- */
- selectedKeys = new LinkedHashSet<String>(stateKeys);
-
- /*
- * We need to fire this event so that Grid is able to re-render the
- * selection changes (if applicable).
- */
- if (changed) {
- // At least for now there's no way to send the selected and/or
- // deselected row data. Some data is only stored as keys
- updatedFromState = true;
- getWidget().fireEvent(
- new SelectionEvent<JsonObject>(getWidget(),
- (List<JsonObject>) null, null, false));
- }
- }
-
- private void onSortStateChange() {
- List<SortOrder> sortOrder = new ArrayList<SortOrder>();
-
- String[] sortColumns = getState().sortColumns;
- SortDirection[] sortDirs = getState().sortDirs;
-
- for (int i = 0; i < sortColumns.length; i++) {
- sortOrder.add(new SortOrder(columnIdToColumn.get(sortColumns[i]),
- sortDirs[i]));
- }
-
- getWidget().setSortOrder(sortOrder);
- }
-
- private Logger getLogger() {
- return Logger.getLogger(getClass().getName());
- }
-
- @SuppressWarnings("static-method")
- private AbstractRowHandleSelectionModel<JsonObject> createSelectionModel(
- SharedSelectionMode mode) {
- switch (mode) {
- case SINGLE:
- return new SelectionModelSingle<JsonObject>();
- case MULTI:
- return new SelectionModelMulti<JsonObject>();
- case NONE:
- return new SelectionModelNone<JsonObject>();
- default:
- throw new IllegalStateException("unexpected mode value: " + mode);
- }
- }
-
- /**
- * A workaround method for accessing the protected method
- * {@code AbstractRowHandleSelectionModel.selectByHandle}
- */
- private native void selectByHandle(RowHandle<JsonObject> handle)
- /*-{
- var model = this.@com.vaadin.client.connectors.GridConnector::selectionModel;
- model.@com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel::selectByHandle(*)(handle);
- }-*/;
-
- /**
- * A workaround method for accessing the protected method
- * {@code AbstractRowHandleSelectionModel.deselectByHandle}
- */
- private native void deselectByHandle(RowHandle<JsonObject> handle)
- /*-{
- var model = this.@com.vaadin.client.connectors.GridConnector::selectionModel;
- model.@com.vaadin.client.widget.grid.selection.AbstractRowHandleSelectionModel::deselectByHandle(*)(handle);
- }-*/;
-
- /**
- * Gets the row key for a row object.
- *
- * @param row
- * the row object
- * @return the key for the given row
- */
- public String getRowKey(JsonObject row) {
- final Object key = dataSource.getRowKey(row);
- assert key instanceof String : "Internal key was not a String but a "
- + key.getClass().getSimpleName() + " (" + key + ")";
- return (String) key;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.vaadin.client.HasComponentsConnector#updateCaption(com.vaadin.client
- * .ComponentConnector)
- */
- @Override
- public void updateCaption(ComponentConnector connector) {
- // TODO Auto-generated method stub
-
- }
-
- @Override
- public void onConnectorHierarchyChange(
- ConnectorHierarchyChangeEvent connectorHierarchyChangeEvent) {
- }
-
- public String getColumnId(Grid.Column<?, ?> column) {
- if (column instanceof CustomGridColumn) {
- return ((CustomGridColumn) column).id;
- }
- return null;
- }
-
- @Override
- public void layout() {
- getWidget().onResize();
- }
- }
|