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+/******************************************************************************
+ * Copyright 2018 highstreet technologies GmbH
+ *
+ * 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.
+ *****************************************************************************/
+
+import * as React from 'react';
+import { withRouter, RouteComponentProps } from 'react-router-dom';
+
+import { WithStyles, withStyles, createStyles, Theme } from '@material-ui/core/styles'; // infra for styling
+
+
+import defaultLogo from '../assets/images/defaultLogo.svg';
+
+const styles = (theme: Theme) => createStyles({
+ headerLogo: {
+ backgroundImage: "url(" + (theme.design && theme.design.url || defaultLogo) + ")",
+ backgroundColor: theme.palette.primary.main,
+ backgroundRepeat: "no-repeat",
+ backgroundSize: "auto " + (theme.design && theme.design.logoHeight || 70) + "px",
+ height: theme.design && theme.design.logoHeight || 70,
+ width: theme.design ? theme.design.width / theme.design.height * theme.design.logoHeight : 220
+ }
+});
+
+type LogoProps = RouteComponentProps<{ id: string }> & WithStyles<typeof styles>;
+interface ILogoState {
+ windowWidth: number
+}
+
+class LogoComponent extends React.Component<LogoProps, ILogoState> {
+
+ private hideLogoWhenWindowWidthIsLower: number = 800;
+
+ constructor(props: LogoProps) {
+ super(props);
+ this.state = {
+ windowWidth: 0
+ };
+ this.updateWindowDimensions = this.updateWindowDimensions.bind(this);
+ }
+
+ componentDidMount(): void {
+ this.updateWindowDimensions();
+ window.addEventListener('resize', this.updateWindowDimensions);
+ };
+ componentWillUnmount(): void {
+ window.removeEventListener('resize', this.updateWindowDimensions);
+ };
+ updateWindowDimensions(): void {
+ this.setState({ windowWidth: window.innerWidth });
+ }
+
+ render(): JSX.Element {
+ let div: JSX.Element = <div />;
+ if (this.state.windowWidth >= this.hideLogoWhenWindowWidthIsLower) {
+ div = <div className={this.props.classes.headerLogo} />;
+ } else {
+ console.info([
+ "Logo hidden, because browser window width (",
+ this.state.windowWidth,
+ "px) is lower thershold (",
+ this.hideLogoWhenWindowWidthIsLower,
+ "px)."].join(''));
+ }
+ return div;
+ }
+}
+
+export const Logo = withStyles(styles)(withRouter(LogoComponent));
+export default Logo;