grafana/public/app/features/panel/panel_directive.ts

///<reference path="../../headers/common.d.ts" />

import angular from 'angular';
import $ from 'jquery';

var module = angular.module('grafana.directives');

module.directive('grafanaPanel', function() {
  return {
    restrict: 'E',
    templateUrl: 'public/app/features/panel/partials/panel.html',
    transclude: true,
    scope: { ctrl: "=" },
    link: function(scope, elem) {
      var panelContainer = elem.find('.panel-container');
      var ctrl = scope.ctrl;
      scope.$watchGroup(['ctrl.fullscreen', 'ctrl.height', 'ctrl.panel.height', 'ctrl.row.height'], function() {
        panelContainer.css({ minHeight: ctrl.height || ctrl.panel.height || ctrl.row.height, display: 'block' });
        elem.toggleClass('panel-fullscreen', ctrl.fullscreen ? true : false);
      });
    }
  };
});

module.directive('panelResizer', function($rootScope) {
  return {
    restrict: 'E',
    template: '<span class="resize-panel-handle"></span>',
    link: function(scope, elem) {
      var resizing = false;
      var lastPanel;
      var ctrl = scope.ctrl;
      var handleOffset;
      var originalHeight;
      var originalWidth;
      var maxWidth;

      function dragStartHandler(e) {
        e.preventDefault();
        resizing = true;

        handleOffset = $(e.target).offset();
        originalHeight = parseInt(ctrl.row.height);
        originalWidth = ctrl.panel.span;
        maxWidth = $(document).width();

        lastPanel = ctrl.row.panels[ctrl.row.panels.length - 1];

        $('body').on('mousemove', moveHandler);
        $('body').on('mouseup', dragEndHandler);
      }

      function moveHandler(e) {
        ctrl.row.height = originalHeight + (e.pageY - handleOffset.top);
        ctrl.panel.span = originalWidth + (((e.pageX - handleOffset.left) / maxWidth) * 12);
        ctrl.panel.span = Math.min(Math.max(ctrl.panel.span, 1), 12);

        var rowSpan = ctrl.dashboard.rowSpan(ctrl.row);

        // auto adjust other panels
        if (Math.floor(rowSpan) < 14) {
          // last panel should not push row down
          if (lastPanel === ctrl.panel && rowSpan > 12) {
            lastPanel.span -= rowSpan - 12;
          } else if (lastPanel !== ctrl.panel) {
            // reduce width of last panel so total in row is 12
            lastPanel.span = lastPanel.span - (rowSpan - 12);
            lastPanel.span = Math.min(Math.max(lastPanel.span, 1), 12);
          }
        }

        scope.$apply(function() {
          scope.$broadcast('render');
        });
      }

      function dragEndHandler() {
        // if close to 12
        var rowSpan = ctrl.dashboard.rowSpan(ctrl.row);
        if (rowSpan < 12 && rowSpan > 11) {
          lastPanel.span +=  12 - rowSpan;
        }

        scope.$apply(function() {
          $rootScope.$broadcast('render');
        });

        $('body').off('mousemove', moveHandler);
        $('body').off('mouseup', dragEndHandler);
      }

      elem.on('mousedown', dragStartHandler);

      scope.$on("$destroy", function() {
        elem.off('mousedown', dragStartHandler);
      });
    }
  };
});