410 lines
12 KiB
JavaScript
410 lines
12 KiB
JavaScript
import date_utils from './date_utils';
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import { $, createSVG, animateSVG } from './svg_utils';
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export default class Bar {
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constructor(gantt, task) {
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this.set_defaults(gantt, task);
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this.prepare();
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this.draw();
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this.bind();
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}
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set_defaults(gantt, task) {
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this.action_completed = false;
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this.gantt = gantt;
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this.task = task;
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}
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prepare() {
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this.prepare_values();
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this.prepare_helpers();
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}
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prepare_values() {
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this.invalid = this.task.invalid;
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this.height = this.gantt.options.bar_height;
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this.x = this.compute_x();
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this.y = this.compute_y();
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this.corner_radius = this.gantt.options.bar_corner_radius;
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this.duration =
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date_utils.diff(this.task._end, this.task._start, 'hour') /
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this.gantt.options.step;
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this.width = this.gantt.options.column_width * this.duration;
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this.progress_width =
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this.gantt.options.column_width *
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this.duration *
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(this.task.progress / 100) || 0;
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this.group = createSVG('g', {
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class: 'bar-wrapper ' + (this.task.custom_class || ''),
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'data-id': this.task.id
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});
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this.bar_group = createSVG('g', {
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class: 'bar-group',
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append_to: this.group
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});
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this.handle_group = createSVG('g', {
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class: 'handle-group',
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append_to: this.group
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});
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}
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prepare_helpers() {
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SVGElement.prototype.getX = function() {
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return +this.getAttribute('x');
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};
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SVGElement.prototype.getY = function() {
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return +this.getAttribute('y');
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};
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SVGElement.prototype.getWidth = function() {
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return +this.getAttribute('width');
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};
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SVGElement.prototype.getHeight = function() {
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return +this.getAttribute('height');
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};
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SVGElement.prototype.getEndX = function() {
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return this.getX() + this.getWidth();
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};
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}
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draw() {
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this.draw_bar();
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this.draw_progress_bar();
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this.draw_label();
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this.draw_resize_handles();
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}
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draw_bar() {
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this.$bar = createSVG('rect', {
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x: this.x,
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y: this.y,
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width: this.width,
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height: this.height,
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rx: this.corner_radius,
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ry: this.corner_radius,
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class: 'bar',
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append_to: this.bar_group
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});
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animateSVG(this.$bar, 'width', 0, this.width);
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if (this.invalid) {
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this.$bar.classList.add('bar-invalid');
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}
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}
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draw_progress_bar() {
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if (this.invalid) return;
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this.$bar_progress = createSVG('rect', {
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x: this.x,
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y: this.y,
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width: this.progress_width,
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height: this.height,
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rx: this.corner_radius,
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ry: this.corner_radius,
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class: 'bar-progress',
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append_to: this.bar_group
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});
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animateSVG(this.$bar_progress, 'width', 0, this.progress_width);
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}
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draw_label() {
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createSVG('text', {
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x: this.x + this.width / 2,
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y: this.y + this.height / 2,
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innerHTML: this.task.name,
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class: 'bar-label',
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append_to: this.bar_group
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});
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// labels get BBox in the next tick
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requestAnimationFrame(() => this.update_label_position());
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}
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draw_resize_handles() {
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if (this.invalid) return;
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const bar = this.$bar;
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const handle_width = 8;
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createSVG('rect', {
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x: bar.getX() + bar.getWidth() - 9,
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y: bar.getY() + 1,
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width: handle_width,
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height: this.height - 2,
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rx: this.corner_radius,
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ry: this.corner_radius,
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class: 'handle right',
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append_to: this.handle_group
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});
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createSVG('rect', {
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x: bar.getX() + 1,
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y: bar.getY() + 1,
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width: handle_width,
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height: this.height - 2,
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rx: this.corner_radius,
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ry: this.corner_radius,
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class: 'handle left',
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append_to: this.handle_group
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});
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if (this.task.progress && this.task.progress < 100) {
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this.$handle_progress = createSVG('polygon', {
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points: this.get_progress_polygon_points().join(','),
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class: 'handle progress',
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append_to: this.handle_group
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});
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}
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}
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get_progress_polygon_points() {
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const bar_progress = this.$bar_progress;
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return [
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bar_progress.getEndX() - 5,
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bar_progress.getY() + bar_progress.getHeight(),
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bar_progress.getEndX() + 5,
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bar_progress.getY() + bar_progress.getHeight(),
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bar_progress.getEndX(),
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bar_progress.getY() + bar_progress.getHeight() - 8.66
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];
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}
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bind() {
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if (this.invalid) return;
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this.setup_click_event();
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}
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setup_click_event() {
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$.on(this.group, 'focus ' + this.gantt.options.popup_trigger, e => {
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if (this.action_completed) {
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// just finished a move action, wait for a few seconds
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return;
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}
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if (e.type === 'click') {
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this.gantt.trigger_event('click', [this.task]);
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}
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this.gantt.unselect_all();
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this.group.classList.toggle('active');
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this.show_popup();
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});
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}
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show_popup() {
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if (this.gantt.bar_being_dragged) return;
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const start_date = date_utils.format(this.task._start, 'MMM D');
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const end_date = date_utils.format(
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date_utils.add(this.task._end, -1, 'second'),
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'MMM D'
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);
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const subtitle = start_date + ' - ' + end_date;
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this.gantt.show_popup({
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target_element: this.$bar,
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title: this.task.name,
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subtitle: subtitle,
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task: this.task
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});
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}
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update_bar_position({ x = null, width = null }) {
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const bar = this.$bar;
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if (x) {
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// get all x values of parent task
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const xs = this.task.dependencies.map(dep => {
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return this.gantt.get_bar(dep).$bar.getX();
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});
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// child task must not go before parent
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const valid_x = xs.reduce((prev, curr) => {
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return x >= curr;
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}, x);
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if (!valid_x) {
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width = null;
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return;
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}
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this.update_attr(bar, 'x', x);
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}
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if (width && width >= this.gantt.options.column_width) {
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this.update_attr(bar, 'width', width);
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}
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this.update_label_position();
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this.update_handle_position();
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this.update_progressbar_position();
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this.update_arrow_position();
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}
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date_changed() {
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let changed = false;
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const { new_start_date, new_end_date } = this.compute_start_end_date();
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if (Number(this.task._start) !== Number(new_start_date)) {
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changed = true;
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this.task._start = new_start_date;
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}
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if (Number(this.task._end) !== Number(new_end_date)) {
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changed = true;
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this.task._end = new_end_date;
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}
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if (!changed) return;
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this.gantt.trigger_event('date_change', [
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this.task,
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new_start_date,
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date_utils.add(new_end_date, -1, 'second')
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]);
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}
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progress_changed() {
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const new_progress = this.compute_progress();
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this.task.progress = new_progress;
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this.gantt.trigger_event('progress_change', [this.task, new_progress]);
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}
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set_action_completed() {
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this.action_completed = true;
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setTimeout(() => (this.action_completed = false), 1000);
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}
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compute_start_end_date() {
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const bar = this.$bar;
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const x_in_units = bar.getX() / this.gantt.options.column_width;
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const new_start_date = date_utils.add(
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this.gantt.gantt_start,
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x_in_units * this.gantt.options.step,
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'hour'
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);
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const width_in_units = bar.getWidth() / this.gantt.options.column_width;
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const new_end_date = date_utils.add(
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new_start_date,
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width_in_units * this.gantt.options.step,
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'hour'
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);
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return { new_start_date, new_end_date };
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}
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compute_progress() {
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const progress =
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this.$bar_progress.getWidth() / this.$bar.getWidth() * 100;
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return parseInt(progress, 10);
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}
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compute_x() {
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const { step, column_width } = this.gantt.options;
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const task_start = this.task._start;
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const gantt_start = this.gantt.gantt_start;
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const diff = date_utils.diff(task_start, gantt_start, 'hour');
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let x = diff / step * column_width;
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if (this.gantt.view_is('Month')) {
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const diff = date_utils.diff(task_start, gantt_start, 'day');
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x = diff * column_width / 30;
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}
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return x;
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}
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compute_y() {
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return (
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this.gantt.options.header_height +
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this.gantt.options.padding +
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this.task._index * (this.height + this.gantt.options.padding)
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);
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}
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get_snap_position(dx) {
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let odx = dx,
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rem,
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position;
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if (this.gantt.view_is('Week')) {
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rem = dx % (this.gantt.options.column_width / 7);
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position =
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odx -
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rem +
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(rem < this.gantt.options.column_width / 14
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? 0
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: this.gantt.options.column_width / 7);
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} else if (this.gantt.view_is('Month')) {
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rem = dx % (this.gantt.options.column_width / 30);
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position =
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odx -
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rem +
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(rem < this.gantt.options.column_width / 60
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? 0
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: this.gantt.options.column_width / 30);
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} else {
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rem = dx % this.gantt.options.column_width;
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position =
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odx -
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rem +
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(rem < this.gantt.options.column_width / 2
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? 0
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: this.gantt.options.column_width);
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}
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return position;
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}
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update_attr(element, attr, value) {
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value = +value;
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if (!isNaN(value)) {
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element.setAttribute(attr, value);
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}
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return element;
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}
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update_progressbar_position() {
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this.$bar_progress.setAttribute('x', this.$bar.getX());
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this.$bar_progress.setAttribute(
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'width',
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this.$bar.getWidth() * (this.task.progress / 100)
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);
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}
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update_label_position() {
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const bar = this.$bar,
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label = this.group.querySelector('.bar-label');
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if (label.getBBox().width > bar.getWidth()) {
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label.classList.add('big');
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label.setAttribute('x', bar.getX() + bar.getWidth() + 5);
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} else {
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label.classList.remove('big');
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label.setAttribute('x', bar.getX() + bar.getWidth() / 2);
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}
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}
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update_handle_position() {
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const bar = this.$bar;
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this.handle_group
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.querySelector('.handle.left')
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.setAttribute('x', bar.getX() + 1);
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this.handle_group
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.querySelector('.handle.right')
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.setAttribute('x', bar.getEndX() - 9);
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const handle = this.group.querySelector('.handle.progress');
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handle &&
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handle.setAttribute('points', this.get_progress_polygon_points());
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}
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update_arrow_position() {
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this.arrows = this.arrows || [];
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for (let arrow of this.arrows) {
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arrow.update();
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}
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}
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}
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function isFunction(functionToCheck) {
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var getType = {};
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return (
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functionToCheck &&
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getType.toString.call(functionToCheck) === '[object Function]'
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);
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}
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