Current File : //usr/local/go119/src/cmd/vendor/github.com/google/pprof/internal/driver/html/common.js
// Make svg pannable and zoomable.
// Call clickHandler(t) if a click event is caught by the pan event handlers.
function initPanAndZoom(svg, clickHandler) {
'use strict';
// Current mouse/touch handling mode
const IDLE = 0;
const MOUSEPAN = 1;
const TOUCHPAN = 2;
const TOUCHZOOM = 3;
let mode = IDLE;
// State needed to implement zooming.
let currentScale = 1.0;
const initWidth = svg.viewBox.baseVal.width;
const initHeight = svg.viewBox.baseVal.height;
// State needed to implement panning.
let panLastX = 0; // Last event X coordinate
let panLastY = 0; // Last event Y coordinate
let moved = false; // Have we seen significant movement
let touchid = null; // Current touch identifier
// State needed for pinch zooming
let touchid2 = null; // Second id for pinch zooming
let initGap = 1.0; // Starting gap between two touches
let initScale = 1.0; // currentScale when pinch zoom started
let centerPoint = null; // Center point for scaling
// Convert event coordinates to svg coordinates.
function toSvg(x, y) {
const p = svg.createSVGPoint();
p.x = x;
p.y = y;
let m = svg.getCTM();
if (m == null) m = svg.getScreenCTM(); // Firefox workaround.
return p.matrixTransform(m.inverse());
}
// Change the scaling for the svg to s, keeping the point denoted
// by u (in svg coordinates]) fixed at the same screen location.
function rescale(s, u) {
// Limit to a good range.
if (s < 0.2) s = 0.2;
if (s > 10.0) s = 10.0;
currentScale = s;
// svg.viewBox defines the visible portion of the user coordinate
// system. So to magnify by s, divide the visible portion by s,
// which will then be stretched to fit the viewport.
const vb = svg.viewBox;
const w1 = vb.baseVal.width;
const w2 = initWidth / s;
const h1 = vb.baseVal.height;
const h2 = initHeight / s;
vb.baseVal.width = w2;
vb.baseVal.height = h2;
// We also want to adjust vb.baseVal.x so that u.x remains at same
// screen X coordinate. In other words, want to change it from x1 to x2
// so that:
// (u.x - x1) / w1 = (u.x - x2) / w2
// Simplifying that, we get
// (u.x - x1) * (w2 / w1) = u.x - x2
// x2 = u.x - (u.x - x1) * (w2 / w1)
vb.baseVal.x = u.x - (u.x - vb.baseVal.x) * (w2 / w1);
vb.baseVal.y = u.y - (u.y - vb.baseVal.y) * (h2 / h1);
}
function handleWheel(e) {
if (e.deltaY == 0) return;
// Change scale factor by 1.1 or 1/1.1
rescale(currentScale * (e.deltaY < 0 ? 1.1 : (1/1.1)),
toSvg(e.offsetX, e.offsetY));
}
function setMode(m) {
mode = m;
touchid = null;
touchid2 = null;
}
function panStart(x, y) {
moved = false;
panLastX = x;
panLastY = y;
}
function panMove(x, y) {
let dx = x - panLastX;
let dy = y - panLastY;
if (Math.abs(dx) <= 2 && Math.abs(dy) <= 2) return; // Ignore tiny moves
moved = true;
panLastX = x;
panLastY = y;
// Firefox workaround: get dimensions from parentNode.
const swidth = svg.clientWidth || svg.parentNode.clientWidth;
const sheight = svg.clientHeight || svg.parentNode.clientHeight;
// Convert deltas from screen space to svg space.
dx *= (svg.viewBox.baseVal.width / swidth);
dy *= (svg.viewBox.baseVal.height / sheight);
svg.viewBox.baseVal.x -= dx;
svg.viewBox.baseVal.y -= dy;
}
function handleScanStart(e) {
if (e.button != 0) return; // Do not catch right-clicks etc.
setMode(MOUSEPAN);
panStart(e.clientX, e.clientY);
e.preventDefault();
svg.addEventListener('mousemove', handleScanMove);
}
function handleScanMove(e) {
if (e.buttons == 0) {
// Missed an end event, perhaps because mouse moved outside window.
setMode(IDLE);
svg.removeEventListener('mousemove', handleScanMove);
return;
}
if (mode == MOUSEPAN) panMove(e.clientX, e.clientY);
}
function handleScanEnd(e) {
if (mode == MOUSEPAN) panMove(e.clientX, e.clientY);
setMode(IDLE);
svg.removeEventListener('mousemove', handleScanMove);
if (!moved) clickHandler(e.target);
}
// Find touch object with specified identifier.
function findTouch(tlist, id) {
for (const t of tlist) {
if (t.identifier == id) return t;
}
return null;
}
// Return distance between two touch points
function touchGap(t1, t2) {
const dx = t1.clientX - t2.clientX;
const dy = t1.clientY - t2.clientY;
return Math.hypot(dx, dy);
}
function handleTouchStart(e) {
if (mode == IDLE && e.changedTouches.length == 1) {
// Start touch based panning
const t = e.changedTouches[0];
setMode(TOUCHPAN);
touchid = t.identifier;
panStart(t.clientX, t.clientY);
e.preventDefault();
} else if (mode == TOUCHPAN && e.touches.length == 2) {
// Start pinch zooming
setMode(TOUCHZOOM);
const t1 = e.touches[0];
const t2 = e.touches[1];
touchid = t1.identifier;
touchid2 = t2.identifier;
initScale = currentScale;
initGap = touchGap(t1, t2);
centerPoint = toSvg((t1.clientX + t2.clientX) / 2,
(t1.clientY + t2.clientY) / 2);
e.preventDefault();
}
}
function handleTouchMove(e) {
if (mode == TOUCHPAN) {
const t = findTouch(e.changedTouches, touchid);
if (t == null) return;
if (e.touches.length != 1) {
setMode(IDLE);
return;
}
panMove(t.clientX, t.clientY);
e.preventDefault();
} else if (mode == TOUCHZOOM) {
// Get two touches; new gap; rescale to ratio.
const t1 = findTouch(e.touches, touchid);
const t2 = findTouch(e.touches, touchid2);
if (t1 == null || t2 == null) return;
const gap = touchGap(t1, t2);
rescale(initScale * gap / initGap, centerPoint);
e.preventDefault();
}
}
function handleTouchEnd(e) {
if (mode == TOUCHPAN) {
const t = findTouch(e.changedTouches, touchid);
if (t == null) return;
panMove(t.clientX, t.clientY);
setMode(IDLE);
e.preventDefault();
if (!moved) clickHandler(t.target);
} else if (mode == TOUCHZOOM) {
setMode(IDLE);
e.preventDefault();
}
}
svg.addEventListener('mousedown', handleScanStart);
svg.addEventListener('mouseup', handleScanEnd);
svg.addEventListener('touchstart', handleTouchStart);
svg.addEventListener('touchmove', handleTouchMove);
svg.addEventListener('touchend', handleTouchEnd);
svg.addEventListener('wheel', handleWheel, true);
}
function initMenus() {
'use strict';
let activeMenu = null;
let activeMenuHdr = null;
function cancelActiveMenu() {
if (activeMenu == null) return;
activeMenu.style.display = 'none';
activeMenu = null;
activeMenuHdr = null;
}
// Set click handlers on every menu header.
for (const menu of document.getElementsByClassName('submenu')) {
const hdr = menu.parentElement;
if (hdr == null) return;
if (hdr.classList.contains('disabled')) return;
function showMenu(e) {
// menu is a child of hdr, so this event can fire for clicks
// inside menu. Ignore such clicks.
if (e.target.parentElement != hdr) return;
activeMenu = menu;
activeMenuHdr = hdr;
menu.style.display = 'block';
}
hdr.addEventListener('mousedown', showMenu);
hdr.addEventListener('touchstart', showMenu);
}
// If there is an active menu and a down event outside, retract the menu.
for (const t of ['mousedown', 'touchstart']) {
document.addEventListener(t, (e) => {
// Note: to avoid unnecessary flicker, if the down event is inside
// the active menu header, do not retract the menu.
if (activeMenuHdr != e.target.closest('.menu-item')) {
cancelActiveMenu();
}
}, { passive: true, capture: true });
}
// If there is an active menu and an up event inside, retract the menu.
document.addEventListener('mouseup', (e) => {
if (activeMenu == e.target.closest('.submenu')) {
cancelActiveMenu();
}
}, { passive: true, capture: true });
}
function sendURL(method, url, done) {
fetch(url.toString(), {method: method})
.then((response) => { done(response.ok); })
.catch((error) => { done(false); });
}
// Initialize handlers for saving/loading configurations.
function initConfigManager() {
'use strict';
// Initialize various elements.
function elem(id) {
const result = document.getElementById(id);
if (!result) console.warn('element ' + id + ' not found');
return result;
}
const overlay = elem('dialog-overlay');
const saveDialog = elem('save-dialog');
const saveInput = elem('save-name');
const saveError = elem('save-error');
const delDialog = elem('delete-dialog');
const delPrompt = elem('delete-prompt');
const delError = elem('delete-error');
let currentDialog = null;
let currentDeleteTarget = null;
function showDialog(dialog) {
if (currentDialog != null) {
overlay.style.display = 'none';
currentDialog.style.display = 'none';
}
currentDialog = dialog;
if (dialog != null) {
overlay.style.display = 'block';
dialog.style.display = 'block';
}
}
function cancelDialog(e) {
showDialog(null);
}
// Show dialog for saving the current config.
function showSaveDialog(e) {
saveError.innerText = '';
showDialog(saveDialog);
saveInput.focus();
}
// Commit save config.
function commitSave(e) {
const name = saveInput.value;
const url = new URL(document.URL);
// Set path relative to existing path.
url.pathname = new URL('./saveconfig', document.URL).pathname;
url.searchParams.set('config', name);
saveError.innerText = '';
sendURL('POST', url, (ok) => {
if (!ok) {
saveError.innerText = 'Save failed';
} else {
showDialog(null);
location.reload(); // Reload to show updated config menu
}
});
}
function handleSaveInputKey(e) {
if (e.key === 'Enter') commitSave(e);
}
function deleteConfig(e, elem) {
e.preventDefault();
const config = elem.dataset.config;
delPrompt.innerText = 'Delete ' + config + '?';
currentDeleteTarget = elem;
showDialog(delDialog);
}
function commitDelete(e, elem) {
if (!currentDeleteTarget) return;
const config = currentDeleteTarget.dataset.config;
const url = new URL('./deleteconfig', document.URL);
url.searchParams.set('config', config);
delError.innerText = '';
sendURL('DELETE', url, (ok) => {
if (!ok) {
delError.innerText = 'Delete failed';
return;
}
showDialog(null);
// Remove menu entry for this config.
if (currentDeleteTarget && currentDeleteTarget.parentElement) {
currentDeleteTarget.parentElement.remove();
}
});
}
// Bind event on elem to fn.
function bind(event, elem, fn) {
if (elem == null) return;
elem.addEventListener(event, fn);
if (event == 'click') {
// Also enable via touch.
elem.addEventListener('touchstart', fn);
}
}
bind('click', elem('save-config'), showSaveDialog);
bind('click', elem('save-cancel'), cancelDialog);
bind('click', elem('save-confirm'), commitSave);
bind('keydown', saveInput, handleSaveInputKey);
bind('click', elem('delete-cancel'), cancelDialog);
bind('click', elem('delete-confirm'), commitDelete);
// Activate deletion button for all config entries in menu.
for (const del of Array.from(document.getElementsByClassName('menu-delete-btn'))) {
bind('click', del, (e) => {
deleteConfig(e, del);
});
}
}
function viewer(baseUrl, nodes) {
'use strict';
// Elements
const search = document.getElementById('search');
const graph0 = document.getElementById('graph0');
const svg = (graph0 == null ? null : graph0.parentElement);
const toptable = document.getElementById('toptable');
let regexpActive = false;
let selected = new Map();
let origFill = new Map();
let searchAlarm = null;
let buttonsEnabled = true;
function handleDetails(e) {
e.preventDefault();
const detailsText = document.getElementById('detailsbox');
if (detailsText != null) {
if (detailsText.style.display === 'block') {
detailsText.style.display = 'none';
} else {
detailsText.style.display = 'block';
}
}
}
function handleKey(e) {
if (e.keyCode != 13) return;
setHrefParams(window.location, function (params) {
params.set('f', search.value);
});
e.preventDefault();
}
function handleSearch() {
// Delay expensive processing so a flurry of key strokes is handled once.
if (searchAlarm != null) {
clearTimeout(searchAlarm);
}
searchAlarm = setTimeout(selectMatching, 300);
regexpActive = true;
updateButtons();
}
function selectMatching() {
searchAlarm = null;
let re = null;
if (search.value != '') {
try {
re = new RegExp(search.value);
} catch (e) {
// TODO: Display error state in search box
return;
}
}
function match(text) {
return re != null && re.test(text);
}
// drop currently selected items that do not match re.
selected.forEach(function(v, n) {
if (!match(nodes[n])) {
unselect(n, document.getElementById('node' + n));
}
})
// add matching items that are not currently selected.
if (nodes) {
for (let n = 0; n < nodes.length; n++) {
if (!selected.has(n) && match(nodes[n])) {
select(n, document.getElementById('node' + n));
}
}
}
updateButtons();
}
function toggleSvgSelect(elem) {
// Walk up to immediate child of graph0
while (elem != null && elem.parentElement != graph0) {
elem = elem.parentElement;
}
if (!elem) return;
// Disable regexp mode.
regexpActive = false;
const n = nodeId(elem);
if (n < 0) return;
if (selected.has(n)) {
unselect(n, elem);
} else {
select(n, elem);
}
updateButtons();
}
function unselect(n, elem) {
if (elem == null) return;
selected.delete(n);
setBackground(elem, false);
}
function select(n, elem) {
if (elem == null) return;
selected.set(n, true);
setBackground(elem, true);
}
function nodeId(elem) {
const id = elem.id;
if (!id) return -1;
if (!id.startsWith('node')) return -1;
const n = parseInt(id.slice(4), 10);
if (isNaN(n)) return -1;
if (n < 0 || n >= nodes.length) return -1;
return n;
}
function setBackground(elem, set) {
// Handle table row highlighting.
if (elem.nodeName == 'TR') {
elem.classList.toggle('hilite', set);
return;
}
// Handle svg element highlighting.
const p = findPolygon(elem);
if (p != null) {
if (set) {
origFill.set(p, p.style.fill);
p.style.fill = '#ccccff';
} else if (origFill.has(p)) {
p.style.fill = origFill.get(p);
}
}
}
function findPolygon(elem) {
if (elem.localName == 'polygon') return elem;
for (const c of elem.children) {
const p = findPolygon(c);
if (p != null) return p;
}
return null;
}
// convert a string to a regexp that matches that string.
function quotemeta(str) {
return str.replace(/([\\\.?+*\[\](){}|^$])/g, '\\$1');
}
function setSampleIndexLink(id) {
const elem = document.getElementById(id);
if (elem != null) {
setHrefParams(elem, function (params) {
params.set("si", id);
});
}
}
// Update id's href to reflect current selection whenever it is
// liable to be followed.
function makeSearchLinkDynamic(id) {
const elem = document.getElementById(id);
if (elem == null) return;
// Most links copy current selection into the 'f' parameter,
// but Refine menu links are different.
let param = 'f';
if (id == 'ignore') param = 'i';
if (id == 'hide') param = 'h';
if (id == 'show') param = 's';
if (id == 'show-from') param = 'sf';
// We update on mouseenter so middle-click/right-click work properly.
elem.addEventListener('mouseenter', updater);
elem.addEventListener('touchstart', updater);
function updater() {
// The selection can be in one of two modes: regexp-based or
// list-based. Construct regular expression depending on mode.
let re = regexpActive
? search.value
: Array.from(selected.keys()).map(key => quotemeta(nodes[key])).join('|');
setHrefParams(elem, function (params) {
if (re != '') {
// For focus/show/show-from, forget old parameter. For others, add to re.
if (param != 'f' && param != 's' && param != 'sf' && params.has(param)) {
const old = params.get(param);
if (old != '') {
re += '|' + old;
}
}
params.set(param, re);
} else {
params.delete(param);
}
});
}
}
function setHrefParams(elem, paramSetter) {
let url = new URL(elem.href);
url.hash = '';
// Copy params from this page's URL.
const params = url.searchParams;
for (const p of new URLSearchParams(window.location.search)) {
params.set(p[0], p[1]);
}
// Give the params to the setter to modify.
paramSetter(params);
elem.href = url.toString();
}
function handleTopClick(e) {
// Walk back until we find TR and then get the Name column (index 5)
let elem = e.target;
while (elem != null && elem.nodeName != 'TR') {
elem = elem.parentElement;
}
if (elem == null || elem.children.length < 6) return;
e.preventDefault();
const tr = elem;
const td = elem.children[5];
if (td.nodeName != 'TD') return;
const name = td.innerText;
const index = nodes.indexOf(name);
if (index < 0) return;
// Disable regexp mode.
regexpActive = false;
if (selected.has(index)) {
unselect(index, elem);
} else {
select(index, elem);
}
updateButtons();
}
function updateButtons() {
const enable = (search.value != '' || selected.size != 0);
if (buttonsEnabled == enable) return;
buttonsEnabled = enable;
for (const id of ['focus', 'ignore', 'hide', 'show', 'show-from']) {
const link = document.getElementById(id);
if (link != null) {
link.classList.toggle('disabled', !enable);
}
}
}
// Initialize button states
updateButtons();
// Setup event handlers
initMenus();
if (svg != null) {
initPanAndZoom(svg, toggleSvgSelect);
}
if (toptable != null) {
toptable.addEventListener('mousedown', handleTopClick);
toptable.addEventListener('touchstart', handleTopClick);
}
const ids = ['topbtn', 'graphbtn', 'flamegraph', 'peek', 'list', 'disasm',
'focus', 'ignore', 'hide', 'show', 'show-from'];
ids.forEach(makeSearchLinkDynamic);
const sampleIDs = [{{range .SampleTypes}}'{{.}}', {{end}}];
sampleIDs.forEach(setSampleIndexLink);
// Bind action to button with specified id.
function addAction(id, action) {
const btn = document.getElementById(id);
if (btn != null) {
btn.addEventListener('click', action);
btn.addEventListener('touchstart', action);
}
}
addAction('details', handleDetails);
initConfigManager();
search.addEventListener('input', handleSearch);
search.addEventListener('keydown', handleKey);
// Give initial focus to main container so it can be scrolled using keys.
const main = document.getElementById('bodycontainer');
if (main) {
main.focus();
}
}
Mini Shell