Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

22 files changed, 1066 insertions, 0 deletions

diff --git a/devtools/client/application/src/components/manifest/Manifest.js b/devtools/client/application/src/components/manifest/Manifest.js
new file mode 100644
index 0000000000..f6b5f19b37
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/Manifest.js
@@ -0,0 +1,136 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  article,
+  h1,
+  table,
+  tbody,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+const {
+  l10n,
+} = require("resource://devtools/client/application/src/modules/l10n.js");
+
+const ManifestColorItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestColorItem.js")
+);
+const ManifestIconItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestIconItem.js")
+);
+const ManifestUrlItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestUrlItem.js")
+);
+const ManifestItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestItem.js")
+);
+const ManifestIssueList = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestIssueList.js")
+);
+const ManifestSection = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestSection.js")
+);
+const ManifestJsonLink = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestJsonLink.js")
+);
+
+const {
+  MANIFEST_MEMBER_VALUE_TYPES,
+} = require("resource://devtools/client/application/src/constants.js");
+const Types = require("resource://devtools/client/application/src/types/index.js");
+
+/**
+ * A canonical manifest, splitted in different sections
+ */
+class Manifest extends PureComponent {
+  static get propTypes() {
+    return {
+      ...Types.manifest, // { identity, presentation, icons, validation, url }
+    };
+  }
+
+  renderIssueSection() {
+    const { validation } = this.props;
+    const shouldRender = validation && !!validation.length;
+
+    return shouldRender
+      ? ManifestSection(
+          {
+            key: `manifest-section-0`,
+            title: l10n.getString("manifest-item-warnings"),
+          },
+          ManifestIssueList({ issues: validation })
+        )
+      : null;
+  }
+
+  renderMember({ key, value, type }, index) {
+    let domKey = key;
+    switch (type) {
+      case MANIFEST_MEMBER_VALUE_TYPES.COLOR:
+        return ManifestColorItem({ label: key, key: domKey, value });
+      case MANIFEST_MEMBER_VALUE_TYPES.ICON:
+        // since the manifest may have keys with empty size/contentType,
+        // we cannot use them as unique IDs
+        domKey = index;
+        return ManifestIconItem({ label: key, key: domKey, value });
+      case MANIFEST_MEMBER_VALUE_TYPES.URL:
+        return ManifestUrlItem({ label: key, key: domKey, value });
+      case MANIFEST_MEMBER_VALUE_TYPES.STRING:
+      default:
+        return ManifestItem({ label: key, key: domKey }, value);
+    }
+  }
+
+  renderItemSections() {
+    const { identity, icons, presentation } = this.props;
+
+    const manifestMembers = [
+      { localizationId: "manifest-item-identity", items: identity },
+      { localizationId: "manifest-item-presentation", items: presentation },
+      { localizationId: "manifest-item-icons", items: icons },
+    ];
+
+    return manifestMembers.map(({ localizationId, items }, index) => {
+      return ManifestSection(
+        {
+          key: `manifest-section-${index + 1}`,
+          title: l10n.getString(localizationId),
+        },
+        // NOTE: this table should probably be its own component, to keep
+        //       the same level of abstraction as with the validation issues
+        // Bug https://bugzilla.mozilla.org/show_bug.cgi?id=1577138
+        table({}, tbody({}, items.map(this.renderMember)))
+      );
+    });
+  }
+
+  render() {
+    const { url } = this.props;
+
+    return article(
+      { className: "js-manifest" },
+      Localized(
+        {
+          id: "manifest-view-header",
+        },
+        h1({ className: "app-page__title" })
+      ),
+      ManifestJsonLink({ url }),
+      this.renderIssueSection(),
+      this.renderItemSections()
+    );
+  }
+}
+
+// Exports
+module.exports = Manifest;
diff --git a/devtools/client/application/src/components/manifest/ManifestColorItem.css b/devtools/client/application/src/components/manifest/ManifestColorItem.css
new file mode 100644
index 0000000000..92dadec271
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestColorItem.css
@@ -0,0 +1,29 @@
+/* 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/. */
+
+.manifest-item__color {
+  /* NOTE: platform converts any color format that is in the manifest to
+           hexadecimal, so we can uppercase */
+  text-transform: uppercase;
+  direction: ltr; /* force LTR so the # stays at the beginning of the hex number */
+  display: inline-block;
+}
+
+.manifest-item__color::before {
+  display: inline-block;
+  content: '';
+  background-color: #fff;
+  background-image: linear-gradient(var(--color-value), var(--color-value)), /* injected via React */
+    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc),
+    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc);
+  background-size: 6px 6px;
+  background-position: 0 0, 3px 3px;
+  border-radius: 50%;
+  width: calc(var(--base-unit) * 3);
+  height: calc(var(--base-unit) * 3);
+  margin-block-start: calc(var(--base-unit) * -0.5);
+  margin-inline-end: var(--base-unit);
+  box-shadow: 0 0 0 1px var(--theme-splitter-color);
+  vertical-align: middle;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestColorItem.js b/devtools/client/application/src/components/manifest/ManifestColorItem.js
new file mode 100644
index 0000000000..ac4b54e82f
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestColorItem.js
@@ -0,0 +1,57 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  div,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const Types = require("resource://devtools/client/application/src/types/index.js");
+const ManifestItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestItem.js")
+);
+
+/**
+ * This component displays a Manifest member which holds a color value
+ */
+class ManifestColorItem extends PureComponent {
+  static get propTypes() {
+    return {
+      ...Types.manifestItemColor, // { label, value }
+    };
+  }
+
+  renderColor() {
+    let { value } = this.props;
+    if (!value) {
+      return null;
+    }
+
+    // Truncate colors in #rrggbbaa format to #rrggbb
+    if (value.length === 9 && value.toLowerCase().endsWith("ff")) {
+      value = value.slice(0, 7);
+    }
+
+    /* div instead of span because CSS `direction` works with block elements */
+    return div(
+      {
+        className: "manifest-item__color",
+        style: { "--color-value": value },
+      },
+      value
+    );
+  }
+
+  render() {
+    const { label } = this.props;
+    return ManifestItem({ label }, this.renderColor());
+  }
+}
+
+module.exports = ManifestColorItem;
diff --git a/devtools/client/application/src/components/manifest/ManifestEmpty.js b/devtools/client/application/src/components/manifest/ManifestEmpty.js
new file mode 100644
index 0000000000..3e0eb2de48
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestEmpty.js
@@ -0,0 +1,81 @@
+/* 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/. */
+
+"use strict";
+
+const { openDocLink } = require("resource://devtools/client/shared/link.js");
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  a,
+  article,
+  aside,
+  div,
+  h1,
+  img,
+  p,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+
+const DOC_URL =
+  "https://developer.mozilla.org/en-US/docs/Web/Manifest" +
+  "?utm_source=devtools&utm_medium=sw-panel-blank";
+
+/**
+ * This component displays help information when no manifest is found for the
+ * current target.
+ */
+class ManifestEmpty extends PureComponent {
+  openDocumentation() {
+    openDocLink(DOC_URL);
+  }
+
+  render() {
+    return article(
+      { className: "app-page__icon-container js-manifest-empty" },
+      aside(
+        {},
+        Localized(
+          {
+            id: "sidebar-item-manifest",
+            attrs: {
+              alt: true,
+            },
+          },
+          img({
+            className: "app-page__icon",
+            src: "chrome://devtools/skin/images/application-manifest.svg",
+          })
+        )
+      ),
+      div(
+        {},
+        Localized(
+          {
+            id: "manifest-empty-intro2",
+          },
+          h1({ className: "app-page__title" })
+        ),
+        p(
+          {},
+          Localized(
+            { id: "manifest-empty-intro-link" },
+            a({
+              onClick: () => this.openDocumentation(),
+            })
+          )
+        ),
+        Localized({ id: "manifest-non-existing" }, p({}))
+      )
+    );
+  }
+}
+
+// Exports
+module.exports = ManifestEmpty;
diff --git a/devtools/client/application/src/components/manifest/ManifestIconItem.css b/devtools/client/application/src/components/manifest/ManifestIconItem.css
new file mode 100644
index 0000000000..a2bbfd9d34
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIconItem.css
@@ -0,0 +1,7 @@
+/* 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/. */
+
+.manifest-item__icon {
+  max-width: 100%;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestIconItem.js b/devtools/client/application/src/components/manifest/ManifestIconItem.js
new file mode 100644
index 0000000000..a525fbcdb9
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIconItem.js
@@ -0,0 +1,98 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  br,
+  code,
+  img,
+  span,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+const {
+  l10n,
+} = require("resource://devtools/client/application/src/modules/l10n.js");
+
+const Types = require("resource://devtools/client/application/src/types/index.js");
+const ManifestItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestItem.js")
+);
+
+/**
+ * This component displays a Manifest member which holds a color value
+ */
+class ManifestIconItem extends PureComponent {
+  static get propTypes() {
+    return {
+      // {
+      //   label: { contentType, sizes },
+      //   value: { src, purpose }
+      // }
+      ...Types.manifestItemIcon,
+    };
+  }
+
+  getLocalizedImgTitle() {
+    const { sizes } = this.props.label;
+
+    return sizes && sizes.length
+      ? l10n.getString("manifest-icon-img-title", { sizes })
+      : l10n.getString("manifest-icon-img-title-no-sizes");
+  }
+
+  renderLabel() {
+    const { contentType, sizes } = this.props.label;
+
+    // sinze both `contentType` and `sizes` may be undefined, we don't need to
+    // render the <br> if one –or both– are not to be displayed
+    const shallRenderBr = contentType && sizes;
+
+    return [
+      sizes ? sizes : null,
+      shallRenderBr ? br({ key: "label-br" }) : null,
+      contentType ? contentType : null,
+    ];
+  }
+
+  render() {
+    const { src, purpose } = this.props.value;
+
+    return ManifestItem(
+      {
+        label: this.renderLabel(),
+      },
+      Localized(
+        {
+          id: "manifest-icon-img",
+          attrs: {
+            alt: true,
+          },
+        },
+        img({
+          className: "manifest-item__icon",
+          src,
+          title: this.getLocalizedImgTitle(),
+        })
+      ),
+      br({}),
+      Localized(
+        {
+          id: "manifest-icon-purpose",
+          code: code({}),
+          $purpose: purpose,
+        },
+        span({})
+      )
+    );
+  }
+}
+
+module.exports = ManifestIconItem;
diff --git a/devtools/client/application/src/components/manifest/ManifestIssue.css b/devtools/client/application/src/components/manifest/ManifestIssue.css
new file mode 100644
index 0000000000..96bcdae5dd
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIssue.css
@@ -0,0 +1,17 @@
+/* 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/. */
+
+.manifest-issue__icon {
+  -moz-context-properties: fill;
+  width: calc(var(--base-unit) * 3);
+  height: calc(var(--base-unit) * 3);
+}
+
+.manifest-issue__icon--warning {
+  fill: var(--theme-icon-warning-color);
+}
+
+.manifest-issue__icon--error {
+  fill: var(--theme-icon-error-color);
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestIssue.js b/devtools/client/application/src/components/manifest/ManifestIssue.js
new file mode 100644
index 0000000000..6a9680d604
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIssue.js
@@ -0,0 +1,72 @@
+/* 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/. */
+
+"use strict";
+
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  img,
+  li,
+  span,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+
+const {
+  MANIFEST_ISSUE_LEVELS,
+} = require("resource://devtools/client/application/src/constants.js");
+const Types = require("resource://devtools/client/application/src/types/index.js");
+
+/**
+ * A Manifest validation issue (warning, error)
+ */
+class ManifestIssue extends PureComponent {
+  static get propTypes() {
+    return {
+      className: PropTypes.string,
+      ...Types.manifestIssue, // { level, message }
+    };
+  }
+
+  getIconData(level) {
+    switch (level) {
+      case MANIFEST_ISSUE_LEVELS.WARNING:
+        return {
+          src: "chrome://devtools/skin/images/alert-small.svg",
+          localizationId: "icon-warning",
+        };
+      case MANIFEST_ISSUE_LEVELS.ERROR:
+      default:
+        return {
+          src: "resource://devtools-shared-images/error-small.svg",
+          localizationId: "icon-error",
+        };
+    }
+  }
+
+  render() {
+    const { level, message, className } = this.props;
+    const icon = this.getIconData(level);
+
+    return li(
+      { className: `js-manifest-issue ${className ? className : ""}` },
+      Localized(
+        { id: icon.localizationId, attrs: { alt: true, title: true } },
+        img({
+          className: `manifest-issue__icon manifest-issue__icon--${level}`,
+          src: icon.src,
+        })
+      ),
+      span({}, message)
+    );
+  }
+}
+
+// Exports
+module.exports = ManifestIssue;
diff --git a/devtools/client/application/src/components/manifest/ManifestIssueList.css b/devtools/client/application/src/components/manifest/ManifestIssueList.css
new file mode 100644
index 0000000000..ccb3f08df5
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIssueList.css
@@ -0,0 +1,15 @@
+/* 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/. */
+
+.manifest-issues {
+  list-style-type: none;
+  padding-inline-start: 0;
+  display: grid;
+  grid-template-columns: auto 1fr;
+  grid-gap: var(--base-unit);
+}
+
+.manifest-issues__item {
+  display: contents;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestIssueList.js b/devtools/client/application/src/components/manifest/ManifestIssueList.js
new file mode 100644
index 0000000000..4b3d1f46c8
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestIssueList.js
@@ -0,0 +1,68 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  ul,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const {
+  MANIFEST_ISSUE_LEVELS,
+} = require("resource://devtools/client/application/src/constants.js");
+const Types = require("resource://devtools/client/application/src/types/index.js");
+
+const ManifestIssue = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestIssue.js")
+);
+
+/**
+ * A collection of manifest issues (errors, warnings)
+ */
+class ManifestIssueList extends PureComponent {
+  static get propTypes() {
+    return {
+      issues: Types.manifestIssueArray.isRequired,
+    };
+  }
+
+  // group the errors by level, and order by severity
+  groupIssuesByLevel() {
+    const { issues } = this.props;
+
+    const errors = issues.filter(x => x.level === MANIFEST_ISSUE_LEVELS.ERROR);
+    const warnings = issues.filter(
+      x => x.level === MANIFEST_ISSUE_LEVELS.WARNING
+    );
+
+    return [errors, warnings];
+  }
+
+  render() {
+    const groups = this.groupIssuesByLevel().filter(list => !!list.length);
+
+    return groups.map((list, listIndex) => {
+      return ul(
+        {
+          className: "manifest-issues js-manifest-issues",
+          key: `issuelist-${listIndex}`,
+        },
+        list.map((issue, issueIndex) =>
+          ManifestIssue({
+            className: "manifest-issues__item",
+            key: `issue-${issueIndex}`,
+            ...issue,
+          })
+        )
+      );
+    });
+  }
+}
+
+// Exports
+module.exports = ManifestIssueList;
diff --git a/devtools/client/application/src/components/manifest/ManifestItem.css b/devtools/client/application/src/components/manifest/ManifestItem.css
new file mode 100644
index 0000000000..94da03e9b9
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestItem.css
@@ -0,0 +1,28 @@
+/* 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/. */
+
+.manifest-item {
+  vertical-align: baseline;
+}
+
+.manifest-item__label {
+  box-sizing: border-box;
+  min-width: calc(var(--base-unit) * 32);
+  padding-inline-end: calc(var(--base-unit) * 4);
+  padding-inline-start: 0;
+  vertical-align: top;
+  color: var(--theme-text-color-alt);
+  font-weight: inherit;
+  text-align: start;
+}
+
+.manifest-item__value {
+  word-break: break-all;
+  vertical-align: top;
+}
+
+.manifest-item__label,
+.manifest-item__value {
+  padding-block: calc(var(--base-unit) * 1);
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestItem.js b/devtools/client/application/src/components/manifest/ManifestItem.js
new file mode 100644
index 0000000000..96c47a1a7f
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestItem.js
@@ -0,0 +1,50 @@
+/* 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/. */
+
+"use strict";
+
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  tr,
+  td,
+  th,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+/**
+ * This component displays a key-value data pair from a manifest
+ */
+class ManifestItem extends PureComponent {
+  static get propTypes() {
+    return {
+      label: PropTypes.node.isRequired,
+      children: PropTypes.node,
+    };
+  }
+
+  render() {
+    const { children, label } = this.props;
+    return tr(
+      {
+        className: "manifest-item js-manifest-item",
+      },
+      th(
+        {
+          className: "manifest-item__label js-manifest-item-label",
+          scope: "row",
+        },
+        label
+      ),
+      td(
+        { className: "manifest-item__value js-manifest-item-content" },
+        children
+      )
+    );
+  }
+}
+
+// Exports
+module.exports = ManifestItem;
diff --git a/devtools/client/application/src/components/manifest/ManifestJsonLink.css b/devtools/client/application/src/components/manifest/ManifestJsonLink.css
new file mode 100644
index 0000000000..52343226f9
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestJsonLink.css
@@ -0,0 +1,9 @@
+/* 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/. */
+
+.manifest-json-link {
+  /* this is so it has an implicit width and the link inside gets to truncate
+     with an ellipsis */
+  display: grid;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestJsonLink.js b/devtools/client/application/src/components/manifest/ManifestJsonLink.js
new file mode 100644
index 0000000000..d35924b5c3
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestJsonLink.js
@@ -0,0 +1,67 @@
+/* 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/. */
+
+"use strict";
+
+const { openDocLink } = require("resource://devtools/client/shared/link.js");
+
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+
+const {
+  a,
+  p,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+
+/**
+ * This component displays an "Open JSON" link for the Manifest
+ */
+class ManifestJsonLink extends PureComponent {
+  static get propTypes() {
+    return {
+      url: PropTypes.string.isRequired,
+    };
+  }
+
+  get shouldRenderLink() {
+    const { url } = this.props;
+    // Firefox blocks the loading of Data URLs with mimetypes manifest+json unless
+    // explicitly typed by the user in the address bar.
+    // So we are not showing the link in this case.
+    // See more details in this post:
+    // https://blog.mozilla.org/security/2017/11/27/blocking-top-level-navigations-data-urls-firefox-59/
+    return !url.startsWith("data:");
+  }
+
+  renderLink() {
+    const { url } = this.props;
+
+    return a(
+      {
+        className: "js-manifest-json-link devtools-ellipsis-text",
+        href: "#",
+        title: url,
+        onClick: () => openDocLink(url),
+      },
+      url
+    );
+  }
+
+  render() {
+    return p(
+      { className: "manifest-json-link" },
+      this.shouldRenderLink
+        ? this.renderLink()
+        : Localized({ id: "manifest-json-link-data-url" })
+    );
+  }
+}
+
+module.exports = ManifestJsonLink;
diff --git a/devtools/client/application/src/components/manifest/ManifestLoader.css b/devtools/client/application/src/components/manifest/ManifestLoader.css
new file mode 100644
index 0000000000..4f728ff6e3
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestLoader.css
@@ -0,0 +1,14 @@
+/* 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/. */
+
+.manifest-loader {
+  font-size: var(--body-20-font-size);
+  font-weight: var(--body-20-font-weight);
+}
+
+.manifest-loader__load {
+  /* TODO: implement a spinner when tackling the UX review bug
+     https://bugzilla.mozilla.org/show_bug.cgi?id=1566023 */
+  text-align: center;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestLoader.js b/devtools/client/application/src/components/manifest/ManifestLoader.js
new file mode 100644
index 0000000000..9183b50ff3
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestLoader.js
@@ -0,0 +1,108 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+
+const {
+  aside,
+  h1,
+  p,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const FluentReact = require("resource://devtools/client/shared/vendor/fluent-react.js");
+const Localized = createFactory(FluentReact.Localized);
+
+const {
+  connect,
+} = require("resource://devtools/client/shared/vendor/react-redux.js");
+
+const {
+  fetchManifest,
+} = require("resource://devtools/client/application/src/actions/manifest.js");
+
+class ManifestLoader extends PureComponent {
+  static get propTypes() {
+    return {
+      // these props get automatically injected via `connect`
+      dispatch: PropTypes.func.isRequired,
+      error: PropTypes.string,
+      hasFetchedManifest: PropTypes.bool.isRequired,
+      isLoading: PropTypes.bool.isRequired,
+    };
+  }
+
+  componentDidMount() {
+    this.loadManifestIfNeeded();
+  }
+
+  componentDidUpdate() {
+    this.loadManifestIfNeeded();
+  }
+
+  loadManifestIfNeeded() {
+    const { isLoading, hasFetchedManifest } = this.props;
+    const shallLoad = !isLoading && !hasFetchedManifest;
+    if (shallLoad) {
+      this.props.dispatch(fetchManifest());
+    }
+  }
+
+  renderResult() {
+    return Localized(
+      { id: "manifest-loaded-ok" },
+      p({ className: "js-manifest-loaded-ok" })
+    );
+  }
+
+  renderError() {
+    const { error } = this.props;
+
+    return [
+      Localized(
+        {
+          id: "manifest-loaded-error",
+          key: "manifest-error-label",
+        },
+        h1({ className: "js-manifest-loaded-error app-page__title" })
+      ),
+      p({ className: "technical-text", key: "manifest-error-message" }, error),
+    ];
+  }
+
+  render() {
+    const { error, isLoading } = this.props;
+
+    const loadingDOM = isLoading
+      ? Localized(
+          { id: "manifest-loading" },
+          p({ className: "manifest-loader__load js-manifest-loading" })
+        )
+      : null;
+
+    const errorDOM = error ? this.renderError() : null;
+    const resultDOM = !isLoading && !error ? this.renderResult() : null;
+
+    return aside(
+      { className: "manifest-loader" },
+      loadingDOM,
+      errorDOM,
+      resultDOM
+    );
+  }
+}
+
+const mapDispatchToProps = dispatch => ({ dispatch });
+const mapStateToProps = state => ({
+  error: state.manifest.errorMessage,
+  hasFetchedManifest: typeof state.manifest.manifest !== "undefined",
+  isLoading: state.manifest.isLoading,
+});
+
+module.exports = connect(mapStateToProps, mapDispatchToProps)(ManifestLoader);
diff --git a/devtools/client/application/src/components/manifest/ManifestPage.js b/devtools/client/application/src/components/manifest/ManifestPage.js
new file mode 100644
index 0000000000..60caea591e
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestPage.js
@@ -0,0 +1,76 @@
+/* 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/. */
+
+"use strict";
+
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  section,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const {
+  connect,
+} = require("resource://devtools/client/shared/vendor/react-redux.js");
+
+const Types = require("resource://devtools/client/application/src/types/index.js");
+
+const ManifestLoader = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestLoader.js")
+);
+const Manifest = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/Manifest.js")
+);
+const ManifestEmpty = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestEmpty.js")
+);
+
+class ManifestPage extends PureComponent {
+  static get propTypes() {
+    return {
+      // these props are automatically injected via connect
+      hasLoadingFailed: PropTypes.bool.isRequired,
+      isManifestLoading: PropTypes.bool.isRequired,
+      manifest: PropTypes.shape(Types.manifest),
+    };
+  }
+
+  get shouldShowLoader() {
+    const { isManifestLoading, hasLoadingFailed } = this.props;
+    const mustLoadManifest = typeof this.props.manifest === "undefined";
+    return isManifestLoading || mustLoadManifest || hasLoadingFailed;
+  }
+
+  renderManifest() {
+    const { manifest } = this.props;
+    return manifest ? Manifest({ ...manifest }) : ManifestEmpty({});
+  }
+
+  render() {
+    const { manifest } = this.props;
+
+    return section(
+      {
+        className: `app-page js-manifest-page ${
+          !manifest ? "app-page--empty" : ""
+        }`,
+      },
+      this.shouldShowLoader ? ManifestLoader({}) : this.renderManifest()
+    );
+  }
+}
+
+function mapStateToProps(state) {
+  return {
+    hasLoadingFailed: !!state.manifest.errorMessage,
+    isManifestLoading: state.manifest.isLoading,
+    manifest: state.manifest.manifest,
+  };
+}
+
+// Exports
+module.exports = connect(mapStateToProps)(ManifestPage);
diff --git a/devtools/client/application/src/components/manifest/ManifestSection.css b/devtools/client/application/src/components/manifest/ManifestSection.css
new file mode 100644
index 0000000000..479a6d1f79
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestSection.css
@@ -0,0 +1,25 @@
+/* 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/. */
+
+.manifest-section {
+  padding-block: calc(var(--base-unit) * 2);
+  width: 100%;
+  border-spacing: calc(var(--base-unit) * 2) 0;
+  font-size: var(--body-10-font-size);
+  font-weight: var(--body-10-font-weight);
+}
+
+.manifest-section--empty {
+  padding-block-end: 0;
+}
+
+.manifest-section:not(:last-child) {
+  border-bottom: 1px solid var(--separator-color);
+}
+
+.manifest-section__title {
+  font-size: var(--title-10-font-size);
+  font-weight: var(--title-10-font-weight);
+  margin: 0;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestSection.js b/devtools/client/application/src/components/manifest/ManifestSection.js
new file mode 100644
index 0000000000..4aa92c6a15
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestSection.js
@@ -0,0 +1,44 @@
+/* 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/. */
+
+"use strict";
+
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const {
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  h2,
+  section,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+/**
+ * A section of a manifest in the form of a captioned table.
+ */
+class ManifestSection extends PureComponent {
+  static get propTypes() {
+    return {
+      children: PropTypes.node,
+      title: PropTypes.string.isRequired,
+    };
+  }
+
+  render() {
+    const { children, title } = this.props;
+    const isEmpty = !children || children.length === 0;
+
+    return section(
+      {
+        className: `manifest-section ${
+          isEmpty ? "manifest-section--empty" : ""
+        }`,
+      },
+      h2({ className: "manifest-section__title" }, title),
+      children
+    );
+  }
+}
+
+// Exports
+module.exports = ManifestSection;
diff --git a/devtools/client/application/src/components/manifest/ManifestUrlItem.css b/devtools/client/application/src/components/manifest/ManifestUrlItem.css
new file mode 100644
index 0000000000..9702e7e261
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestUrlItem.css
@@ -0,0 +1,8 @@
+/* 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/. */
+
+.manifest-item__url {
+  direction: ltr; /* force LTR so the # stays at the beginning of the hex number */
+  display: inline-block;
+}
diff --git a/devtools/client/application/src/components/manifest/ManifestUrlItem.js b/devtools/client/application/src/components/manifest/ManifestUrlItem.js
new file mode 100644
index 0000000000..03705d441a
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/ManifestUrlItem.js
@@ -0,0 +1,39 @@
+/* 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/. */
+
+"use strict";
+
+const {
+  createFactory,
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  div,
+} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+
+const Types = require("resource://devtools/client/application/src/types/index.js");
+const ManifestItem = createFactory(
+  require("resource://devtools/client/application/src/components/manifest/ManifestItem.js")
+);
+
+/**
+ * This component displays a Manifest member which holds a URL
+ */
+class ManifestUrlItem extends PureComponent {
+  static get propTypes() {
+    return {
+      ...Types.manifestItemUrl, // { label, value }
+    };
+  }
+
+  render() {
+    const { label, value } = this.props;
+    return ManifestItem(
+      { label },
+      div({ className: "manifest-item__url" }, value)
+    );
+  }
+}
+
+module.exports = ManifestUrlItem;
diff --git a/devtools/client/application/src/components/manifest/moz.build b/devtools/client/application/src/components/manifest/moz.build
new file mode 100644
index 0000000000..bb799cbfc4
--- /dev/null
+++ b/devtools/client/application/src/components/manifest/moz.build
@@ -0,0 +1,18 @@
+# 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/.
+
+DevToolsModules(
+    "Manifest.js",
+    "ManifestColorItem.js",
+    "ManifestEmpty.js",
+    "ManifestIconItem.js",
+    "ManifestIssue.js",
+    "ManifestIssueList.js",
+    "ManifestItem.js",
+    "ManifestJsonLink.js",
+    "ManifestLoader.js",
+    "ManifestPage.js",
+    "ManifestSection.js",
+    "ManifestUrlItem.js",
+)