Files
dbgate/packages/web/src/utility/widgetBarResizing.ts
2025-12-15 12:07:48 +00:00

309 lines
11 KiB
TypeScript

import { newMatcherFn } from 'diff2html/lib/rematch';
import _ from 'lodash';
export interface WidgetBarStoredProps {
contentHeight: number;
collapsed: boolean;
}
export interface WidgetBarStoredPropsResult {
[name: string]: WidgetBarStoredProps;
}
export interface WidgetBarComputedProps {
contentHeight: number;
storedHeight?: number;
visibleItemsCount: number;
splitterVisible: boolean;
collapsed: boolean;
clickableTitle: boolean;
}
export interface WidgetBarComputedResult {
[name: string]: WidgetBarComputedProps;
}
export interface WidgetBarItemDefinition {
name: string;
height?: string; // e.g. '200px' or '30%'
collapsed: boolean; // initial value of collapsing status
skip: boolean;
minimalContentHeight: number;
storeHeight: boolean;
}
export type PushWidgetBarItemDefinitionFunction = (def: WidgetBarItemDefinition) => void;
export type UpdateWidgetBarItemDefinitionFunction = (name: string, def: Partial<WidgetBarItemDefinition>) => void;
export type ResizeWidgetItemFunction = (name: string, deltaY: number) => void;
export type ToggleCollapseWidgetItemFunction = (name: string) => void;
export interface WidgetBarContainerProps {
clientHeight: number;
titleHeight: number;
splitterHeight: number;
}
// accordeon mode - only one item can be expanded at a time
export function widgetShouldBeInAccordeonMode(
container: WidgetBarContainerProps,
definitions: WidgetBarItemDefinition[]
): boolean {
const visibleItems = definitions.filter(def => !def.skip);
const availableContentHeight =
container.clientHeight -
visibleItems.length * container.titleHeight -
Math.max(0, visibleItems.length - 1) * container.splitterHeight;
const minimalRequiredContentHeight = _.sum(visibleItems.map(def => def.minimalContentHeight));
return availableContentHeight < minimalRequiredContentHeight;
}
export function computeInitialWidgetBarProps(
container: WidgetBarContainerProps,
definitions: WidgetBarItemDefinition[],
currentProps: WidgetBarComputedResult
): WidgetBarComputedResult {
if (!container.clientHeight) {
return currentProps;
}
const visibleItems = definitions.filter(def => !def.skip);
const expandedItems = visibleItems.filter(def => !(currentProps[def.name]?.collapsed ?? def.collapsed));
const res: WidgetBarComputedResult = {};
const availableContentHeight =
container.clientHeight -
visibleItems.length * container.titleHeight -
Math.max(0, expandedItems.length - 1) * container.splitterHeight;
if (widgetShouldBeInAccordeonMode(container, definitions)) {
// In accordeon mode, only the first expanded item is shown, others are collapsed
const expandedItem = visibleItems.find(def => !def.collapsed);
for (const def of visibleItems) {
const isExpanded = def.name === expandedItem?.name;
res[def.name] = {
contentHeight: isExpanded ? availableContentHeight : 0,
storedHeight: currentProps[def.name]?.contentHeight,
visibleItemsCount: visibleItems.length,
splitterVisible: false,
collapsed: !isExpanded,
clickableTitle: !isExpanded,
};
}
return res;
}
// First pass: calculate base heights
let totalContentHeight = 0;
const itemHeights = {};
const flexibleItems = [];
for (const def of expandedItems) {
if (def.storeHeight && currentProps[def.name]?.storedHeight > 0) {
const storedHeight = currentProps[def.name].storedHeight;
itemHeights[def.name] = storedHeight;
totalContentHeight += storedHeight;
} else if (def.height) {
let height = 0;
if (_.isString(def.height) && def.height.endsWith('px')) {
height = parseInt(def.height.slice(0, -2));
} else if (_.isString(def.height) && def.height.endsWith('%'))
height = (availableContentHeight * parseFloat(def.height.slice(0, -1))) / 100;
else {
height = parseInt(def.height);
}
if (height < def.minimalContentHeight) {
height = def.minimalContentHeight;
}
totalContentHeight += height;
itemHeights[def.name] = height;
} else {
flexibleItems.push(def);
}
}
// Second pass - distribute remaining height
if (flexibleItems.length > 0) {
let remainingHeight = availableContentHeight - totalContentHeight;
for (const def of flexibleItems) {
let height = remainingHeight / flexibleItems.length;
if (height < def.minimalContentHeight) height = def.minimalContentHeight;
itemHeights[def.name] = height;
}
}
// Third pass - update heights to match available height
totalContentHeight = _.sum(Object.values(itemHeights));
if (totalContentHeight != availableContentHeight) {
const scale = availableContentHeight / totalContentHeight;
for (const def of expandedItems) {
itemHeights[def.name] = itemHeights[def.name] * scale;
}
}
// Final assembly of results
let visibleIndex = 0;
for (const def of visibleItems) {
res[def.name] = {
contentHeight: Math.round(itemHeights[def.name] || 0),
visibleItemsCount: visibleItems.length,
splitterVisible: visibleItems.length > 1 && visibleIndex < visibleItems.length - 1,
collapsed: !expandedItems.includes(def),
storedHeight: currentProps[def.name]?.storedHeight,
clickableTitle: true,
};
visibleIndex += 1;
}
return res;
}
export function handleResizeWidgetBar(
container: WidgetBarContainerProps,
definitions: WidgetBarItemDefinition[],
currentProps: WidgetBarComputedResult,
resizedItemName: string,
deltaY: number
): WidgetBarComputedResult {
const res = _.cloneDeep(currentProps);
const visibleItems = definitions.filter(def => !def.skip);
const currentItemDef = definitions.find(def => def.name === resizedItemName);
if (!currentItemDef || currentItemDef.collapsed) return res;
const currentItemProps = res[resizedItemName];
let itemIndex = visibleItems.findIndex(def => def.name === resizedItemName);
const itemProps = res[currentItemDef.name];
const nextItemDef = visibleItems[itemIndex + 1];
const currentHeight = itemProps.contentHeight;
const nextItemProps = res[nextItemDef.name];
if (!nextItemDef) return res;
if (deltaY < 0) {
let newHeight = currentHeight + deltaY;
if (newHeight < currentItemDef.minimalContentHeight) {
newHeight = currentItemDef.minimalContentHeight;
}
const actualDeltaY = newHeight - currentHeight;
nextItemProps.contentHeight -= actualDeltaY;
currentItemProps.contentHeight += actualDeltaY;
// // moving up - reduce height of resized item, if too small, reduce height of previous items
// let remainingDeltaY = -deltaY;
// let itemIndex = visibleItems.findIndex(def => def.name === resizedItemName);
// while (remainingDeltaY > 0 && itemIndex >= 0) {
// const itemDef = visibleItems[itemIndex];
// const itemProps = res[itemDef.name];
// const currentHeight = itemProps.contentHeight;
// const minimalHeight = itemDef.minimalContentHeight;
// const reducibleHeight = currentHeight - minimalHeight;
// if (reducibleHeight > 0) {
// const reduction = Math.min(reducibleHeight, remainingDeltaY);
// itemProps.contentHeight -= reduction;
// remainingDeltaY -= reduction;
// }
// itemIndex -= 1;
// }
} else {
let newHeight = nextItemProps.contentHeight - deltaY;
if (newHeight < nextItemDef.minimalContentHeight) {
newHeight = nextItemDef.minimalContentHeight;
}
const actualDeltaY = nextItemProps.contentHeight - newHeight;
nextItemProps.contentHeight -= actualDeltaY;
currentItemProps.contentHeight += actualDeltaY;
// moving down - increase height of resized item, reduce size of next item, if too small, reduce size of further items
// if all items below are at minimal height, stop
// let remainingDeltaY = deltaY;
// let itemIndex = visibleItems.findIndex(def => def.name === resizedItemName);
// while (remainingDeltaY > 0 && itemIndex < visibleItems.length) {
// const itemDef = visibleItems[itemIndex];
// const itemProps = res[itemDef.name];
// const currentHeight = itemProps.contentHeight;
// const minimalHeight = itemDef.minimalContentHeight;
// const reducibleHeight = currentHeight - minimalHeight;
// if (reducibleHeight > 0) {
// const reduction = Math.min(reducibleHeight, remainingDeltaY);
// itemProps.contentHeight -= reduction;
// resizedItemProps.contentHeight += reduction;
// remainingDeltaY -= reduction;
// }
// itemIndex += 1;
// }
}
if (currentItemDef.storeHeight) {
currentItemProps.storedHeight = currentItemProps.contentHeight;
}
if (nextItemDef.storeHeight) {
nextItemProps.storedHeight = nextItemProps.contentHeight;
}
return res;
}
export function toggleCollapseWidgetBar(
container: WidgetBarContainerProps,
definitions: WidgetBarItemDefinition[],
currentProps: WidgetBarComputedResult,
toggledItemName: string
): WidgetBarComputedResult {
const visibleItems = definitions.filter(def => !def.skip);
if (widgetShouldBeInAccordeonMode(container, definitions)) {
// In accordeon mode, only the first expanded item is shown, others are collapsed
const res: WidgetBarComputedResult = {};
for (const def of visibleItems) {
const isExpanded = def.name === toggledItemName;
res[def.name] = {
contentHeight: undefined,
visibleItemsCount: visibleItems.length,
splitterVisible: false,
collapsed: !isExpanded,
clickableTitle: !isExpanded,
};
}
return res;
}
const res = _.cloneDeep(currentProps);
res[toggledItemName].collapsed = !res[toggledItemName].collapsed;
return computeInitialWidgetBarProps(container, definitions, res);
}
export function extractStoredWidgetBarProps(
definitions: WidgetBarItemDefinition[],
currentProps: WidgetBarComputedResult
): WidgetBarStoredPropsResult {
const res: WidgetBarStoredPropsResult = {};
for (const key in currentProps) {
const def = definitions.find(d => d.name === key);
if (!def) continue;
res[key] = {
contentHeight: def.storeHeight ? currentProps[key]?.storedHeight : undefined,
collapsed: currentProps[key]?.collapsed,
};
}
return res;
}
export function createWidgetBarComputedResultFromStored(stored: WidgetBarStoredPropsResult): WidgetBarComputedResult {
const res: WidgetBarComputedResult = {};
if (!stored) return res;
let visibleIndex = 0;
const visibleCount = Object.keys(stored).length;
for (const key in stored) {
res[key] = {
storedHeight: stored[key]?.contentHeight,
contentHeight: 0,
collapsed: stored[key]?.collapsed,
clickableTitle: false,
splitterVisible: visibleCount > 1 && visibleIndex < visibleCount - 1,
visibleItemsCount: 0,
};
visibleIndex += 1;
}
return res;
}