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// Copyright (C) 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import {exists} from '../base/utils';
import {Actions} from '../common/actions';
import {Area, getLegacySelection} from '../common/state';
import {Flow, globals} from './globals';
import {focusHorizontalRange, verticalScrollToTrack} from './scroll_helper';
type Direction = 'Forward' | 'Backward';
// Search |boundFlows| for |flowId| and return the id following it.
// Returns the first flow id if nothing was found or |flowId| was the last flow
// in |boundFlows|, and -1 if |boundFlows| is empty
function findAnotherFlowExcept(boundFlows: Flow[], flowId: number): number {
let selectedFlowFound = false;
if (boundFlows.length === 0) {
return -1;
}
for (const flow of boundFlows) {
if (selectedFlowFound) {
return flow.id;
}
if (flow.id === flowId) {
selectedFlowFound = true;
}
}
return boundFlows[0].id;
}
// Change focus to the next flow event (matching the direction)
export function focusOtherFlow(direction: Direction) {
const currentSelection = getLegacySelection(globals.state);
if (!currentSelection || currentSelection.kind !== 'CHROME_SLICE') {
return;
}
const sliceId = currentSelection.id;
if (sliceId === -1) {
return;
}
const boundFlows = globals.connectedFlows.filter(
(flow) =>
(flow.begin.sliceId === sliceId && direction === 'Forward') ||
(flow.end.sliceId === sliceId && direction === 'Backward'),
);
if (direction === 'Backward') {
const nextFlowId = findAnotherFlowExcept(
boundFlows,
globals.state.focusedFlowIdLeft,
);
globals.dispatch(Actions.setHighlightedFlowLeftId({flowId: nextFlowId}));
} else {
const nextFlowId = findAnotherFlowExcept(
boundFlows,
globals.state.focusedFlowIdRight,
);
globals.dispatch(Actions.setHighlightedFlowRightId({flowId: nextFlowId}));
}
}
// Select the slice connected to the flow in focus
export function moveByFocusedFlow(direction: Direction): void {
const currentSelection = getLegacySelection(globals.state);
if (!currentSelection || currentSelection.kind !== 'CHROME_SLICE') {
return;
}
const sliceId = currentSelection.id;
const flowId =
direction === 'Backward'
? globals.state.focusedFlowIdLeft
: globals.state.focusedFlowIdRight;
if (sliceId === -1 || flowId === -1) {
return;
}
// Find flow that is in focus and select corresponding slice
for (const flow of globals.connectedFlows) {
if (flow.id === flowId) {
const flowPoint = direction === 'Backward' ? flow.begin : flow.end;
const trackKeyByTrackId = globals.trackManager.trackKeyByTrackId;
const trackKey = trackKeyByTrackId.get(flowPoint.trackId);
if (trackKey) {
globals.setLegacySelection(
{
kind: 'CHROME_SLICE',
id: flowPoint.sliceId,
trackKey,
table: 'slice',
},
{
clearSearch: true,
pendingScrollId: flowPoint.sliceId,
switchToCurrentSelectionTab: true,
},
);
}
}
}
}
export function lockSliceSpan(persistent = false) {
const range = globals.findTimeRangeOfSelection();
const currentSelection = getLegacySelection(globals.state);
if (exists(range) && currentSelection !== null) {
const tracks = currentSelection.trackKey ? [currentSelection.trackKey] : [];
const area: Area = {start: range.start, end: range.end, tracks};
globals.dispatch(Actions.markArea({area, persistent}));
}
}
export function findCurrentSelection() {
const selection = getLegacySelection(globals.state);
if (selection === null) return;
const range = globals.findTimeRangeOfSelection();
if (exists(range)) {
focusHorizontalRange(range.start, range.end);
}
if (selection.trackKey) {
verticalScrollToTrack(selection.trackKey, true);
}
}
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