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34 package info.magnolia.ui.contentapp.browser;
35
36 import static java.util.stream.Collectors.toSet;
37
38 import info.magnolia.ui.contentapp.browser.actions.ActionManager;
39 import info.magnolia.ui.contentapp.browser.context.ValueContext;
40 import info.magnolia.ui.contentapp.browser.drop.RowDragger;
41 import info.magnolia.ui.contentapp.configuration.GridViewDefinition;
42
43 import java.util.HashSet;
44 import java.util.Objects;
45 import java.util.Optional;
46 import java.util.stream.Stream;
47
48 import org.apache.commons.lang3.BooleanUtils;
49 import org.vaadin.extension.gridscroll.GridScrollExtension;
50 import org.vaadin.extension.gridscroll.shared.ColumnResizeCompensationMode;
51
52 import com.vaadin.event.ShortcutAction;
53 import com.vaadin.event.ShortcutListener;
54 import com.vaadin.shared.MouseEventDetails;
55 import com.vaadin.shared.ui.grid.DropMode;
56 import com.vaadin.ui.Composite;
57 import com.vaadin.ui.Grid;
58
59
60
61
62
63
64
65 public abstract class GridView<T, P extends GridViewPresenter<T>> extends Composite implements ContentView {
66
67 protected final ValueContext<T> valueContext;
68 protected final GridViewDefinition<T> definition;
69 protected final Grid<T> grid;
70
71 protected final P presenter;
72
73 protected GridView(ValueContext<T> valueContext, GridViewDefinition<T> definition) {
74 this.valueContext = valueContext;
75 this.definition = definition;
76 this.presenter = createPresenter();
77
78 grid = presenter.grid();
79 grid.setSizeFull();
80 grid.setSelectionMode(definition.isMultiSelect() ? Grid.SelectionMode.MULTI : Grid.SelectionMode.SINGLE);
81 grid.addSelectionListener(event -> valueContext.set(event.getAllSelectedItems()));
82 grid.addItemClickListener(event -> {
83 if (isSingleLeftClick(event.getMouseEventDetails())) {
84 grid.deselectAll();
85 grid.select(event.getItem());
86 }
87 });
88
89 if (!definition.isReadOnly()) {
90 ActionManager actionManager = create(ActionManager.class, grid);
91 grid.addShortcutListener(new ShortcutListener("Default action", ShortcutAction.KeyCode.ENTER, new int[]{}) {
92 @Override
93 public void handleAction(Object sender, Object target) {
94 actionManager.fireDefaultAction();
95 }
96 });
97 grid.addItemClickListener(event -> {
98 if (event.getMouseEventDetails().isDoubleClick()) {
99 actionManager.fireDefaultAction();
100 }
101 });
102 }
103
104 grid.getEditor().setEnabled(false);
105 grid.getColumns().stream()
106 .map(Grid.Column::getEditorBinding)
107 .filter(Objects::nonNull)
108 .findFirst()
109 .ifPresent(any -> {
110 grid.getEditor().setBuffered(true);
111 grid.getEditor().setEnabled(true);
112 });
113
114 setLastColumnAsNotResizable(grid);
115
116 new GridScrollExtension<>(grid).setColumnResizeCompensationMode(ColumnResizeCompensationMode.RESIZE_COLUMN);
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122
123 Optional.ofNullable(definition.getDropConstraint()).ifPresent(dropConstraint -> create(RowDragger.class, grid, DropMode.BETWEEN, dropConstraint));
124
125 valueContext.observe(value -> {
126 if (grid.getSelectedItems() != value) {
127 grid.deselectAll();
128 value.forEach(grid::select);
129 }
130 });
131 setCompositionRoot(grid);
132 setSizeFull();
133 }
134
135 private boolean isSingleLeftClick(MouseEventDetails mouseEventDetails) {
136 return BooleanUtils.and(
137 Stream.of(mouseEventDetails.getButton() == MouseEventDetails.MouseButton.LEFT,
138 !mouseEventDetails.isDoubleClick(),
139 !mouseEventDetails.isShiftKey(),
140 !mouseEventDetails.isCtrlKey(),
141 !mouseEventDetails.isAltKey())
142 .toArray(Boolean[]::new));
143 }
144
145 protected abstract P createPresenter();
146
147 protected void select(Stream<T> values) {
148 if (this.definition.isMultiSelect()) {
149 this.grid.asMultiSelect().updateSelection(values.collect(toSet()), new HashSet<>());
150 } else {
151 values.findFirst().ifPresent(this.grid.asSingleSelect()::setValue);
152 }
153 }
154
155
156
157
158 private void setLastColumnAsNotResizable(Grid<T> grid) {
159 if (grid.getColumns().size() > 0) {
160 grid.getColumns().get(grid.getColumns().size() - 1).setResizable(false);
161 }
162 }
163 }