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[Tables] #707 Supporting realtime telemetry tables

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Added real-time table type
This commit is contained in:
Henry
2016-03-08 13:29:16 -08:00
parent 20f1dcef45
commit a4eb9d6a94
6 changed files with 94 additions and 69 deletions
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95
platform/features/table/src/controllers/MCTTableController.js
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@@ -12,7 +12,7 @@ define(
this.element = element;
this.$timeout = $timeout;
this.maxDisplayRows = 50;
element.find('div').on('scroll', this.onScroll.bind(this));
element.find('div').on('scroll', this.setVisibleRows.bind(this));
this.scrollable = element.find('div')[0];
$scope.visibleRows = [];
@@ -66,11 +66,10 @@ define(
}
/**
* On scroll, calculate which rows indexes are visible and
* ensure that an equal number of rows are preloaded for
* scrolling in either direction.
* Re-synchronize between data rows and visible rows, based on array
* content and scroll state.
*/
MCTTableController.prototype.onScroll = function (event) {
MCTTableController.prototype.setVisibleRows = function () {
var self = this,
target = this.scrollable,
topScroll = target.scrollTop,
@@ -82,40 +81,53 @@ define(
start,
end;
//No need to scroll
if (this.$scope.displayRows.length < this.maxDisplayRows) {
return;
}
if (topScroll < this.$scope.headerHeight) {
firstVisible = 0;
//Check whether need to resynchronize visible with display
// rows (if data added)
if (this.$scope.visibleRows.length != this.$scope.displayRows.length){
start = 0;
end = this.$scope.displayRows.length-1;
} else {
//Data is in sync, and no need to calculate scroll,
// so do nothing.
return;
}
} else {
firstVisible = Math.floor(
(topScroll - this.$scope.headerHeight) / this.$scope.rowHeight
//rows has exceeded display maximum, so may be necessary to
// scroll
if (topScroll < this.$scope.headerHeight) {
firstVisible = 0;
} else {
firstVisible = Math.floor(
(topScroll - this.$scope.headerHeight) / this.$scope.rowHeight
);
}
lastVisible = Math.ceil(
(bottomScroll - this.$scope.headerHeight) / this.$scope.rowHeight
);
totalVisible = lastVisible - firstVisible;
numberOffscreen = this.maxDisplayRows - totalVisible;
start = firstVisible - Math.floor(numberOffscreen / 2);
end = lastVisible + Math.ceil(numberOffscreen / 2);
if (start < 0) {
start = 0;
//end = this.$scope.visibleRows.length - 1;
end = Math.min(this.maxDisplayRows, this.$scope.displayRows.length) - 1;
} else if (end >= this.$scope.displayRows.length) {
end = this.$scope.displayRows.length - 1;
start = end - this.maxDisplayRows + 1;
}
if (this.$scope.visibleRows[0].rowIndex === start &&
this.$scope.visibleRows[this.$scope.visibleRows.length - 1]
.rowIndex === end) {
return; // don't update if no changes are required.
}
}
lastVisible = Math.ceil(
(bottomScroll - this.$scope.headerHeight) / this.$scope.rowHeight
);
totalVisible = lastVisible - firstVisible;
numberOffscreen = this.maxDisplayRows - totalVisible;
start = firstVisible - Math.floor(numberOffscreen / 2);
end = lastVisible + Math.ceil(numberOffscreen / 2);
if (start < 0) {
start = 0;
end = this.$scope.visibleRows.length - 1;
} else if (end >= this.$scope.displayRows.length) {
end = this.$scope.displayRows.length - 1;
start = end - this.maxDisplayRows + 1;
}
if (this.$scope.visibleRows[0].rowIndex === start &&
this.$scope.visibleRows[this.$scope.visibleRows.length-1]
.rowIndex === end) {
return; // don't update if no changes are required.
}
//Set visible rows from display rows, based on calculated offset.
this.$scope.visibleRows = this.$scope.displayRows.slice(start, end)
.map(function(row, i) {
return {
@@ -176,16 +188,7 @@ define(
this.$scope.headerHeight = headerHeight;
this.$scope.rowHeight = rowHeight;
this.$scope.totalHeight = overallHeight;
this.$scope.visibleRows = this.$scope.displayRows.slice(0, this.maxDisplayRows).map(function(row, i) {
return {
rowIndex: i,
offsetY: (i * self.$scope.rowHeight) + self.$scope.headerHeight,
contents: row
};
});
this.onScroll();
this.setVisibleRows();
this.$scope.overrideRowPositioning = true;
};
@@ -316,13 +319,13 @@ define(
* will be sorted before display.
*/
MCTTableController.prototype.updateRows = function (newRows) {
console.log('updateRows');
this.$scope.visibleRows = [];
this.$scope.overrideRowPositioning = false;
if (!this.$scope.displayHeaders) {
return;
}
this.filterAndSort(newRows || []);
this.resize();
};