1 files changed, 425 insertions, 0 deletions
diff --git a/browser/components/places/metadataViewer/interactionsViewer.js b/browser/components/places/metadataViewer/interactionsViewer.js
new file mode 100644
index 0000000000..8a846da93c
--- /dev/null
+++ b/browser/components/places/metadataViewer/interactionsViewer.js
@@ -0,0 +1,425 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* eslint-env module */
+
+const { Interactions } = ChromeUtils.importESModule(
+  "resource:///modules/Interactions.sys.mjs"
+);
+const { PlacesUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/PlacesUtils.sys.mjs"
+);
+const { PlacesDBUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/PlacesDBUtils.sys.mjs"
+);
+
+/**
+ * Base class for the table display. Handles table layout and updates.
+ */
+class TableViewer {
+  /**
+   * Maximum number of rows to display by default.
+   *
+   * @type {number}
+   */
+  maxRows = 100;
+
+  /**
+   * The number of rows that we last filled in on the table. This allows
+   * tracking to know when to clear unused rows.
+   *
+   * @type {number}
+   */
+  #lastFilledRows = 0;
+
+  /**
+   * A map of columns that are displayed by default. This is set by sub-classes.
+   *
+   * - The key is the column name in the database.
+   * - The header is the column header on the table.
+   * - The modifier is a function to modify the returned value from the database
+   *   for display.
+   * - includeTitle determines if the title attribute should be set on that
+   *   column, for tooltips, e.g. if an element is likely to overflow.
+   *
+   * @type {Map<string, object>}
+   */
+  columnMap;
+
+  /**
+   * A reference for the current interval timer, if any.
+   *
+   * @type {number}
+   */
+  #timer;
+
+  /**
+   * Starts the display of the table. Setting up the table display and doing
+   * an initial output. Also starts the interval timer.
+   */
+  async start() {
+    this.setupUI();
+    await this.updateDisplay();
+    this.#timer = setInterval(this.updateDisplay.bind(this), 10000);
+  }
+
+  /**
+   * Pauses updates for this table, use start() to re-start.
+   */
+  pause() {
+    if (this.#timer) {
+      clearInterval(this.#timer);
+      this.#timer = null;
+    }
+  }
+
+  /**
+   * Creates the initial table layout and sets the styles to match the number
+   * of columns.
+   */
+  setupUI() {
+    document.getElementById("title").textContent = this.title;
+
+    let viewer = document.getElementById("tableViewer");
+    viewer.textContent = "";
+
+    // Set up the table styles.
+    let existingStyle = document.getElementById("tableStyle");
+    let numColumns = this.columnMap.size;
+    let styleText = `
+#tableViewer {
+  display: grid;
+  grid-template-columns: ${this.cssGridTemplateColumns}
+}
+
+/* Sets the first row of elements to bold. The number is the number of columns */
+#tableViewer > div:nth-child(-n+${numColumns}) {
+  font-weight: bold;
+  white-space: break-spaces;
+}
+
+/* Highlights every other row to make visual scanning of the table easier.
+   The numbers need to be adapted if the number of columns changes. */
+`;
+    for (let i = numColumns + 1; i <= numColumns * 2 - 1; i++) {
+      styleText += `#tableViewer > div:nth-child(${numColumns}n+${i}):nth-child(${numColumns *
+        2}n+${i}),\n`;
+    }
+    styleText += `#tableViewer > div:nth-child(${numColumns}n+${numColumns *
+      2}):nth-child(${numColumns * 2}n+${numColumns * 2})\n
+{
+  background: var(--in-content-box-background-odd);
+}`;
+    existingStyle.innerText = styleText;
+
+    // Now set up the table itself with empty cells, this avoids having to
+    // create and delete rows all the time.
+    let tableBody = document.createDocumentFragment();
+    let header = document.createDocumentFragment();
+    for (let details of this.columnMap.values()) {
+      let columnDiv = document.createElement("div");
+      columnDiv.textContent = details.header;
+      header.appendChild(columnDiv);
+    }
+    tableBody.appendChild(header);
+
+    for (let i = 0; i < this.maxRows; i++) {
+      let row = document.createDocumentFragment();
+      for (let j = 0; j < this.columnMap.size; j++) {
+        row.appendChild(document.createElement("div"));
+      }
+      tableBody.appendChild(row);
+    }
+    viewer.appendChild(tableBody);
+
+    let limit = document.getElementById("tableLimit");
+    limit.textContent = `Maximum rows displayed: ${this.maxRows}.`;
+
+    this.#lastFilledRows = 0;
+  }
+
+  /**
+   * Displays the provided data in the table.
+   *
+   * @param {object[]} rows
+   *   An array of rows to display. The rows are objects with the values for
+   *   the rows being the keys of the columnMap.
+   */
+  displayData(rows) {
+    if (gCurrentHandler != this) {
+      /* Data is no more relevant for the current view. */
+      return;
+    }
+    let viewer = document.getElementById("tableViewer");
+    let index = this.columnMap.size;
+    for (let row of rows) {
+      for (let [column, details] of this.columnMap.entries()) {
+        let value = row[column];
+
+        if (details.includeTitle) {
+          viewer.children[index].setAttribute("title", value);
+        }
+
+        viewer.children[index].textContent = details.modifier
+          ? details.modifier(value)
+          : value;
+
+        index++;
+      }
+    }
+    let numRows = rows.length;
+    if (numRows < this.#lastFilledRows) {
+      for (let r = numRows; r < this.#lastFilledRows; r++) {
+        for (let c = 0; c < this.columnMap.size; c++) {
+          viewer.children[index].textContent = "";
+          viewer.children[index].removeAttribute("title");
+          index++;
+        }
+      }
+    }
+    this.#lastFilledRows = numRows;
+  }
+}
+
+/**
+ * Viewer definition for the page metadata.
+ */
+const metadataHandler = new (class extends TableViewer {
+  title = "Interactions";
+  cssGridTemplateColumns =
+    "max-content fit-content(100%) repeat(6, min-content) fit-content(100%);";
+
+  /**
+   * @see TableViewer.columnMap
+   */
+  columnMap = new Map([
+    ["id", { header: "ID" }],
+    ["url", { header: "URL", includeTitle: true }],
+    [
+      "updated_at",
+      {
+        header: "Updated",
+        modifier: updatedAt => new Date(updatedAt).toLocaleString(),
+      },
+    ],
+    [
+      "total_view_time",
+      {
+        header: "View Time (s)",
+        modifier: totalViewTime => (totalViewTime / 1000).toFixed(2),
+      },
+    ],
+    [
+      "typing_time",
+      {
+        header: "Typing Time (s)",
+        modifier: typingTime => (typingTime / 1000).toFixed(2),
+      },
+    ],
+    ["key_presses", { header: "Key Presses" }],
+    [
+      "scrolling_time",
+      {
+        header: "Scroll Time (s)",
+        modifier: scrollingTime => (scrollingTime / 1000).toFixed(2),
+      },
+    ],
+    ["scrolling_distance", { header: "Scroll Distance (pixels)" }],
+    ["referrer", { header: "Referrer", includeTitle: true }],
+  ]);
+
+  /**
+   * A reference to the database connection.
+   *
+   * @type {mozIStorageConnection}
+   */
+  #db = null;
+
+  async #getRows(query, columns = [...this.columnMap.keys()]) {
+    if (!this.#db) {
+      this.#db = await PlacesUtils.promiseDBConnection();
+    }
+    let rows = await this.#db.executeCached(query);
+    return rows.map(r => {
+      let result = {};
+      for (let column of columns) {
+        result[column] = r.getResultByName(column);
+      }
+      return result;
+    });
+  }
+
+  /**
+   * Loads the current metadata from the database and updates the display.
+   */
+  async updateDisplay() {
+    let rows = await this.#getRows(
+      `SELECT m.id AS id, h.url AS url, updated_at, total_view_time,
+              typing_time, key_presses, scrolling_time, scrolling_distance, h2.url as referrer
+       FROM moz_places_metadata m
+       JOIN moz_places h ON h.id = m.place_id
+       LEFT JOIN moz_places h2 ON h2.id = m.referrer_place_id
+       ORDER BY updated_at DESC
+       LIMIT ${this.maxRows}`
+    );
+    this.displayData(rows);
+  }
+
+  export() {
+    // Export all data. We only export place_id and not url so users can share their exports
+    // without revealing the sites they have been visiting.
+    return this.#getRows(
+      `SELECT
+      m.id,
+      m.place_id,
+      m.referrer_place_id,
+      h.origin_id,
+      m.updated_at,
+      m.total_view_time,
+      h.visit_count,
+      h.frecency,
+      m.typing_time,
+      m.key_presses,
+      m.scrolling_time,
+      m.scrolling_distance,
+      vall.visit_dates,
+      vall.visit_types
+  FROM moz_places_metadata m
+  JOIN moz_places h ON h.id = m.place_id
+  JOIN
+      (SELECT
+          place_id,
+          group_concat(visit_date, ',') AS visit_dates,
+          group_concat(visit_type, ',') AS visit_types
+      FROM moz_historyvisits
+      GROUP BY place_id
+      ORDER BY visit_date DESC
+      ) vall ON vall.place_id = m.place_id
+  ORDER BY m.place_id DESC
+     `,
+      [
+        "id",
+        "place_id",
+        "referrer_place_id",
+        "origin_id",
+        "updated_at",
+        "total_view_time",
+        "visit_count",
+        "frecency",
+        "typing_time",
+        "key_presses",
+        "scrolling_time",
+        "scrolling_distance",
+        "visit_dates",
+        "visit_types",
+      ]
+    );
+  }
+})();
+
+/**
+ * Viewer definition for the Places database stats.
+ */
+const placesStatsHandler = new (class extends TableViewer {
+  title = "Places Database Statistics";
+  cssGridTemplateColumns = "fit-content(100%) repeat(5, max-content);";
+
+  /**
+   * @see TableViewer.columnMap
+   */
+  columnMap = new Map([
+    ["entity", { header: "Entity" }],
+    ["count", { header: "Count" }],
+    [
+      "sizeBytes",
+      {
+        header: "Size (KiB)",
+        modifier: c => c / 1024,
+      },
+    ],
+    [
+      "sizePerc",
+      {
+        header: "Size (Perc.)",
+      },
+    ],
+    [
+      "efficiencyPerc",
+      {
+        header: "Space Eff. (Perc.)",
+      },
+    ],
+    [
+      "sequentialityPerc",
+      {
+        header: "Sequentiality (Perc.)",
+      },
+    ],
+  ]);
+
+  /**
+   * Loads the current metadata from the database and updates the display.
+   */
+  async updateDisplay() {
+    let data = await PlacesDBUtils.getEntitiesStatsAndCounts();
+    this.displayData(data);
+  }
+})();
+
+function checkPrefs() {
+  if (
+    !Services.prefs.getBoolPref("browser.places.interactions.enabled", false)
+  ) {
+    let warning = document.getElementById("enabledWarning");
+    warning.hidden = false;
+  }
+}
+
+function show(selectedButton) {
+  let currentButton = document.querySelector(".category.selected");
+  if (currentButton == selectedButton) {
+    return;
+  }
+
+  gCurrentHandler.pause();
+  currentButton.classList.remove("selected");
+  selectedButton.classList.add("selected");
+  switch (selectedButton.getAttribute("value")) {
+    case "metadata":
+      (gCurrentHandler = metadataHandler).start();
+      metadataHandler.start();
+      break;
+    case "places-stats":
+      (gCurrentHandler = placesStatsHandler).start();
+      break;
+  }
+}
+
+function setupListeners() {
+  let menu = document.getElementById("categories");
+  menu.addEventListener("click", e => {
+    if (e.target && e.target.parentNode == menu) {
+      show(e.target);
+    }
+  });
+  document.getElementById("export").addEventListener("click", async e => {
+    e.preventDefault();
+    const data = await metadataHandler.export();
+
+    const blob = new Blob([JSON.stringify(data)], {
+      type: "text/json;charset=utf-8",
+    });
+    const a = document.createElement("a");
+    a.setAttribute("download", `places-${Date.now()}.json`);
+    a.setAttribute("href", window.URL.createObjectURL(blob));
+    a.click();
+    a.remove();
+  });
+}
+
+checkPrefs();
+// Set the initial handler here.
+let gCurrentHandler = metadataHandler;
+gCurrentHandler.start().catch(console.error);
+setupListeners();