Remove unused class (#10990)

* Remove unused class

shared/src/main/java/com/vaadin/shared/ui/grid/DetailsConnectorChange.java

@@ -1,189 +0,0 @@
-/*
- * Copyright 2000-2018 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.shared.ui.grid;
-
-import java.io.Serializable;
-import java.util.Comparator;
-
-import com.vaadin.shared.Connector;
-
-/**
- * A description of an indexing modification for a connector. This is used by
- * Grid for internal bookkeeping updates.
- *
- * @since 7.5.0
- * @author Vaadin Ltd
- */
-public class DetailsConnectorChange implements Serializable {
-
-    public static final Comparator<DetailsConnectorChange> REMOVED_FIRST_COMPARATOR = new Comparator<DetailsConnectorChange>() {
-        @Override
-        public int compare(DetailsConnectorChange a, DetailsConnectorChange b) {
-            boolean deleteA = a.getNewIndex() == null;
-            boolean deleteB = b.getNewIndex() == null;
-            if (deleteA && !deleteB) {
-                return -1;
-            } else if (!deleteA && deleteB) {
-                return 1;
-            } else {
-                return 0;
-            }
-        }
-    };
-
-    private Connector connector;
-    private Integer oldIndex;
-    private Integer newIndex;
-    private boolean shouldStillBeVisible;
-
-    /** Create a new connector index change */
-    public DetailsConnectorChange() {
-    }
-
-    /**
-     * Convenience constructor for setting all the fields in one line.
-     * <p>
-     * Calling this constructor will also assert that the state of the pojo is
-     * consistent by internal assumptions.
-     *
-     * @param connector
-     *            the changed connector
-     * @param oldIndex
-     *            the old index
-     * @param newIndex
-     *            the new index
-     * @param shouldStillBeVisible
-     *            details should be visible regardless of {@code connector}
-     */
-    public DetailsConnectorChange(Connector connector, Integer oldIndex,
-            Integer newIndex, boolean shouldStillBeVisible) {
-        this.connector = connector;
-        this.oldIndex = oldIndex;
-        this.newIndex = newIndex;
-        this.shouldStillBeVisible = shouldStillBeVisible;
-
-        assert assertStateIsOk();
-    }
-
-    private boolean assertStateIsOk() {
-        boolean connectorAndNewIndexIsNotNull = connector != null
-                && newIndex != null;
-        boolean connectorAndNewIndexIsNullThenOldIndexIsSet = connector == null
-                && newIndex == null && oldIndex != null;
-
-        assert (connectorAndNewIndexIsNotNull
-                || connectorAndNewIndexIsNullThenOldIndexIsSet) : "connector: "
-                        + nullityString(connector) + ", oldIndex: "
-                        + nullityString(oldIndex) + ", newIndex: "
-                        + nullityString(newIndex);
-        return true;
-    }
-
-    private static String nullityString(Object object) {
-        return object == null ? "null" : "non-null";
-    }
-
-    /**
-     * Gets the old index for the connector.
-     * <p>
-     * If <code>null</code>, the connector is recently added. This means that
-     * {@link #getConnector()} is expected not to return <code>null</code>.
-     *
-     * @return the old index for the connector
-     */
-    public Integer getOldIndex() {
-        assert assertStateIsOk();
-        return oldIndex;
-    }
-
-    /**
-     * Gets the new index for the connector.
-     * <p>
-     * If <code>null</code>, the connector should be removed. This means that
-     * {@link #getConnector()} is expected to return <code>null</code> as well.
-     *
-     * @return the new index for the connector
-     */
-    public Integer getNewIndex() {
-        assert assertStateIsOk();
-        return newIndex;
-    }
-
-    /**
-     * Gets the changed connector.
-     *
-     * @return the changed connector. Might be <code>null</code>
-     */
-    public Connector getConnector() {
-        assert assertStateIsOk();
-        return connector;
-    }
-
-    /**
-     * Sets the changed connector.
-     *
-     * @param connector
-     *            the changed connector. May be <code>null</code>
-     */
-    public void setConnector(Connector connector) {
-        this.connector = connector;
-    }
-
-    /**
-     * Sets the old index
-     *
-     * @param oldIndex
-     *            the old index. May be <code>null</code> if a new connector is
-     *            being inserted
-     */
-    public void setOldIndex(Integer oldIndex) {
-        this.oldIndex = oldIndex;
-    }
-
-    /**
-     * Sets the new index
-     *
-     * @param newIndex
-     *            the new index. May be <code>null</code> if a connector is
-     *            being removed
-     */
-    public void setNewIndex(Integer newIndex) {
-        this.newIndex = newIndex;
-    }
-
-    /**
-     * Checks whether whether the details should remain open, even if connector
-     * might be <code>null</code>.
-     *
-     * @return <code>true</code> iff the details should remain open, even if
-     *         connector might be <code>null</code>
-     */
-    public boolean isShouldStillBeVisible() {
-        return shouldStillBeVisible;
-    }
-
-    /**
-     * Sets whether the details should remain open, even if connector might be
-     * <code>null</code>.
-     *
-     * @param shouldStillBeVisible
-     *            <code>true</code> iff the details should remain open, even if
-     *            connector might be <code>null</code>
-     */
-    public void setShouldStillBeVisible(boolean shouldStillBeVisible) {
-        this.shouldStillBeVisible = shouldStillBeVisible;
-    }
-}