How to highlight a column for 500ms when it's data changes. Need to highlight it green/red based on whether...












0















I've included angular material table in my new project and want the table to keep track of each column's data when it changes. If the data value is increased then flash the column in green color and if decreased then in red color for say 500ms and then return to normal state.



I've tried doing that with keeping track of the last data in my code itself but it is not looking an optimized solution. Whether some directive or any material functionality can help me in that?



HTML



<mat-table [dataSource]="dataSource">
<ng-container matColumnDef="time">
<mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
</ng-container>

<ng-container matColumnDef="valueA">
<mat-header-cell class="text-text" *matHeaderCellDef> valueA </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueA']}} </mat-cell>
</ng-container>

<ng-container matColumnDef="valueB">
<mat-header-cell class="text-text" *matHeaderCellDef> valueB </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueB']}} </mat-cell>
</ng-container>

<mat-header-row *matHeaderRowDef="displayedColumns" class="bg-table-odd-row"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns; let i = index;" [ngClass]="{'bg-table-even-row': i%2 == 0, 'bg-table-odd-row': i%2 != 0}"></mat-row>




TS



import { Component, ViewEncapsulation, Input } from '@angular/core';
import { MatTableDataSource } from '@angular/material';

@Component({
selector: 'my-table',
templateUrl: './my-table.component.html',
styleUrls: ['./my-table.component.styl'],
encapsulation: ViewEncapsulation.None
})
export class MyTableComponent {
displayedColumns = ['time', 'valueA', 'valueB'];
dataSource: MatTableDataSource<any>;

private tableData: any = ;

@Input()
set data(value) {
if(value) {
this.tableData = [...value];
this.refresh();
}
};

constructor() {
this.dataSource = new MatTableDataSource(this.tableData);
}

private refresh() {
this.dataSource.data = this.tableData;
}
}









share|improve this question

























  • please show some code

    – Fan Cheung
    Jan 2 at 5:24











  • @FanCheung I've added the code. Please check this.

    – Harsh Mathur
    Jan 2 at 5:38
















0















I've included angular material table in my new project and want the table to keep track of each column's data when it changes. If the data value is increased then flash the column in green color and if decreased then in red color for say 500ms and then return to normal state.



I've tried doing that with keeping track of the last data in my code itself but it is not looking an optimized solution. Whether some directive or any material functionality can help me in that?



HTML



<mat-table [dataSource]="dataSource">
<ng-container matColumnDef="time">
<mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
</ng-container>

<ng-container matColumnDef="valueA">
<mat-header-cell class="text-text" *matHeaderCellDef> valueA </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueA']}} </mat-cell>
</ng-container>

<ng-container matColumnDef="valueB">
<mat-header-cell class="text-text" *matHeaderCellDef> valueB </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueB']}} </mat-cell>
</ng-container>

<mat-header-row *matHeaderRowDef="displayedColumns" class="bg-table-odd-row"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns; let i = index;" [ngClass]="{'bg-table-even-row': i%2 == 0, 'bg-table-odd-row': i%2 != 0}"></mat-row>




TS



import { Component, ViewEncapsulation, Input } from '@angular/core';
import { MatTableDataSource } from '@angular/material';

@Component({
selector: 'my-table',
templateUrl: './my-table.component.html',
styleUrls: ['./my-table.component.styl'],
encapsulation: ViewEncapsulation.None
})
export class MyTableComponent {
displayedColumns = ['time', 'valueA', 'valueB'];
dataSource: MatTableDataSource<any>;

private tableData: any = ;

@Input()
set data(value) {
if(value) {
this.tableData = [...value];
this.refresh();
}
};

constructor() {
this.dataSource = new MatTableDataSource(this.tableData);
}

private refresh() {
this.dataSource.data = this.tableData;
}
}









share|improve this question

























  • please show some code

    – Fan Cheung
    Jan 2 at 5:24











  • @FanCheung I've added the code. Please check this.

    – Harsh Mathur
    Jan 2 at 5:38














0












0








0








I've included angular material table in my new project and want the table to keep track of each column's data when it changes. If the data value is increased then flash the column in green color and if decreased then in red color for say 500ms and then return to normal state.



I've tried doing that with keeping track of the last data in my code itself but it is not looking an optimized solution. Whether some directive or any material functionality can help me in that?



HTML



<mat-table [dataSource]="dataSource">
<ng-container matColumnDef="time">
<mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
</ng-container>

<ng-container matColumnDef="valueA">
<mat-header-cell class="text-text" *matHeaderCellDef> valueA </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueA']}} </mat-cell>
</ng-container>

<ng-container matColumnDef="valueB">
<mat-header-cell class="text-text" *matHeaderCellDef> valueB </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueB']}} </mat-cell>
</ng-container>

<mat-header-row *matHeaderRowDef="displayedColumns" class="bg-table-odd-row"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns; let i = index;" [ngClass]="{'bg-table-even-row': i%2 == 0, 'bg-table-odd-row': i%2 != 0}"></mat-row>




TS



import { Component, ViewEncapsulation, Input } from '@angular/core';
import { MatTableDataSource } from '@angular/material';

@Component({
selector: 'my-table',
templateUrl: './my-table.component.html',
styleUrls: ['./my-table.component.styl'],
encapsulation: ViewEncapsulation.None
})
export class MyTableComponent {
displayedColumns = ['time', 'valueA', 'valueB'];
dataSource: MatTableDataSource<any>;

private tableData: any = ;

@Input()
set data(value) {
if(value) {
this.tableData = [...value];
this.refresh();
}
};

constructor() {
this.dataSource = new MatTableDataSource(this.tableData);
}

private refresh() {
this.dataSource.data = this.tableData;
}
}









share|improve this question
















I've included angular material table in my new project and want the table to keep track of each column's data when it changes. If the data value is increased then flash the column in green color and if decreased then in red color for say 500ms and then return to normal state.



I've tried doing that with keeping track of the last data in my code itself but it is not looking an optimized solution. Whether some directive or any material functionality can help me in that?



HTML



<mat-table [dataSource]="dataSource">
<ng-container matColumnDef="time">
<mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
</ng-container>

<ng-container matColumnDef="valueA">
<mat-header-cell class="text-text" *matHeaderCellDef> valueA </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueA']}} </mat-cell>
</ng-container>

<ng-container matColumnDef="valueB">
<mat-header-cell class="text-text" *matHeaderCellDef> valueB </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> {{row['valueB']}} </mat-cell>
</ng-container>

<mat-header-row *matHeaderRowDef="displayedColumns" class="bg-table-odd-row"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns; let i = index;" [ngClass]="{'bg-table-even-row': i%2 == 0, 'bg-table-odd-row': i%2 != 0}"></mat-row>




TS



import { Component, ViewEncapsulation, Input } from '@angular/core';
import { MatTableDataSource } from '@angular/material';

@Component({
selector: 'my-table',
templateUrl: './my-table.component.html',
styleUrls: ['./my-table.component.styl'],
encapsulation: ViewEncapsulation.None
})
export class MyTableComponent {
displayedColumns = ['time', 'valueA', 'valueB'];
dataSource: MatTableDataSource<any>;

private tableData: any = ;

@Input()
set data(value) {
if(value) {
this.tableData = [...value];
this.refresh();
}
};

constructor() {
this.dataSource = new MatTableDataSource(this.tableData);
}

private refresh() {
this.dataSource.data = this.tableData;
}
}






rxjs angular6 angular-material2






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 2 at 5:37







Harsh Mathur

















asked Jan 2 at 4:24









Harsh MathurHarsh Mathur

193




193













  • please show some code

    – Fan Cheung
    Jan 2 at 5:24











  • @FanCheung I've added the code. Please check this.

    – Harsh Mathur
    Jan 2 at 5:38



















  • please show some code

    – Fan Cheung
    Jan 2 at 5:24











  • @FanCheung I've added the code. Please check this.

    – Harsh Mathur
    Jan 2 at 5:38

















please show some code

– Fan Cheung
Jan 2 at 5:24





please show some code

– Fan Cheung
Jan 2 at 5:24













@FanCheung I've added the code. Please check this.

– Harsh Mathur
Jan 2 at 5:38





@FanCheung I've added the code. Please check this.

– Harsh Mathur
Jan 2 at 5:38












1 Answer
1






active

oldest

votes


















0














You can start with the data setter and hook your logic there



@Input()
set data(value) {
if(value) {
const newData=[...value];
this.tableData = [...value];
this.refresh();
this.flashClass=''
if(this.tableData.length>newData.length)
this.flashClass='green-flash'
if(this.tableData.length>newData.length)
this.flashClass='red-flash'
}
};


apply the class to your html



<mat-table [dataSource]="dataSource">
<ng-container matColumnDef="time" [ngClass]="flashClass">
<mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
<mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
</ng-container>


animations css



.green-flash {
-webkit-animation-name: flash-animation;
-webkit-animation-duration: 0.3s;

animation-name: flash-animation;
animation-duration: 0.3s;
}

@keyframes flash-animation {
from { background: none; }
to { background: green; }
}





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    1 Answer
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    active

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    0














    You can start with the data setter and hook your logic there



    @Input()
    set data(value) {
    if(value) {
    const newData=[...value];
    this.tableData = [...value];
    this.refresh();
    this.flashClass=''
    if(this.tableData.length>newData.length)
    this.flashClass='green-flash'
    if(this.tableData.length>newData.length)
    this.flashClass='red-flash'
    }
    };


    apply the class to your html



    <mat-table [dataSource]="dataSource">
    <ng-container matColumnDef="time" [ngClass]="flashClass">
    <mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
    <mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
    </ng-container>


    animations css



    .green-flash {
    -webkit-animation-name: flash-animation;
    -webkit-animation-duration: 0.3s;

    animation-name: flash-animation;
    animation-duration: 0.3s;
    }

    @keyframes flash-animation {
    from { background: none; }
    to { background: green; }
    }





    share|improve this answer




























      0














      You can start with the data setter and hook your logic there



      @Input()
      set data(value) {
      if(value) {
      const newData=[...value];
      this.tableData = [...value];
      this.refresh();
      this.flashClass=''
      if(this.tableData.length>newData.length)
      this.flashClass='green-flash'
      if(this.tableData.length>newData.length)
      this.flashClass='red-flash'
      }
      };


      apply the class to your html



      <mat-table [dataSource]="dataSource">
      <ng-container matColumnDef="time" [ngClass]="flashClass">
      <mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
      <mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
      </ng-container>


      animations css



      .green-flash {
      -webkit-animation-name: flash-animation;
      -webkit-animation-duration: 0.3s;

      animation-name: flash-animation;
      animation-duration: 0.3s;
      }

      @keyframes flash-animation {
      from { background: none; }
      to { background: green; }
      }





      share|improve this answer


























        0












        0








        0







        You can start with the data setter and hook your logic there



        @Input()
        set data(value) {
        if(value) {
        const newData=[...value];
        this.tableData = [...value];
        this.refresh();
        this.flashClass=''
        if(this.tableData.length>newData.length)
        this.flashClass='green-flash'
        if(this.tableData.length>newData.length)
        this.flashClass='red-flash'
        }
        };


        apply the class to your html



        <mat-table [dataSource]="dataSource">
        <ng-container matColumnDef="time" [ngClass]="flashClass">
        <mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
        <mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
        </ng-container>


        animations css



        .green-flash {
        -webkit-animation-name: flash-animation;
        -webkit-animation-duration: 0.3s;

        animation-name: flash-animation;
        animation-duration: 0.3s;
        }

        @keyframes flash-animation {
        from { background: none; }
        to { background: green; }
        }





        share|improve this answer













        You can start with the data setter and hook your logic there



        @Input()
        set data(value) {
        if(value) {
        const newData=[...value];
        this.tableData = [...value];
        this.refresh();
        this.flashClass=''
        if(this.tableData.length>newData.length)
        this.flashClass='green-flash'
        if(this.tableData.length>newData.length)
        this.flashClass='red-flash'
        }
        };


        apply the class to your html



        <mat-table [dataSource]="dataSource">
        <ng-container matColumnDef="time" [ngClass]="flashClass">
        <mat-header-cell class="text-text" *matHeaderCellDef> </mat-header-cell>
        <mat-cell class="text-text" *matCellDef="let row"> <b>{{row['time']}}</b> </mat-cell>
        </ng-container>


        animations css



        .green-flash {
        -webkit-animation-name: flash-animation;
        -webkit-animation-duration: 0.3s;

        animation-name: flash-animation;
        animation-duration: 0.3s;
        }

        @keyframes flash-animation {
        from { background: none; }
        to { background: green; }
        }






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 2 at 5:52









        Fan CheungFan Cheung

        2,9121419




        2,9121419
































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