fune/devtools/client/inspector/layout/layout.js
2017-02-22 18:14:32 +01:00

565 lines
18 KiB
JavaScript

/* 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 Services = require("Services");
const { Task } = require("devtools/shared/task");
const { getCssProperties } = require("devtools/shared/fronts/css-properties");
const { ReflowFront } = require("devtools/shared/fronts/reflow");
const { InplaceEditor } = require("devtools/client/shared/inplace-editor");
const { createFactory, createElement } = require("devtools/client/shared/vendor/react");
const { Provider } = require("devtools/client/shared/vendor/react-redux");
const SwatchColorPickerTooltip = require("devtools/client/shared/widgets/tooltip/SwatchColorPickerTooltip");
const {
updateLayout,
} = require("./actions/box-model");
const {
updateGridColor,
updateGridHighlighted,
updateGrids,
} = require("./actions/grids");
const {
updateShowGridLineNumbers,
updateShowInfiniteLines,
} = require("./actions/highlighter-settings");
const App = createFactory(require("./components/App"));
const EditingSession = require("./utils/editing-session");
const { LocalizationHelper } = require("devtools/shared/l10n");
const INSPECTOR_L10N =
new LocalizationHelper("devtools/client/locales/inspector.properties");
const NUMERIC = /^-?[\d\.]+$/;
const SHOW_GRID_LINE_NUMBERS = "devtools.gridinspector.showGridLineNumbers";
const SHOW_INFINITE_LINES_PREF = "devtools.gridinspector.showInfiniteLines";
// Default grid colors.
const GRID_COLORS = [
"#05E4EE",
"#BB9DFF",
"#FFB53B",
"#71F362",
"#FF90FF",
"#FF90FF",
"#1B80FF",
"#FF2647"
];
function LayoutView(inspector, window) {
this.document = window.document;
this.highlighters = inspector.highlighters;
this.inspector = inspector;
this.store = inspector.store;
this.walker = this.inspector.walker;
this.updateBoxModel = this.updateBoxModel.bind(this);
this.onGridLayoutChange = this.onGridLayoutChange.bind(this);
this.onHighlighterChange = this.onHighlighterChange.bind(this);
this.onNewSelection = this.onNewSelection.bind(this);
this.onSidebarSelect = this.onSidebarSelect.bind(this);
this.init();
}
LayoutView.prototype = {
/**
* Initializes the layout view by fetching the LayoutFront from the walker, creating
* the redux store and adding the view into the inspector sidebar.
*/
init: Task.async(function* () {
if (!this.inspector) {
return;
}
this.layoutInspector = yield this.inspector.walker.getLayoutInspector();
this.loadHighlighterSettings();
this.highlighters.on("grid-highlighter-hidden", this.onHighlighterChange);
this.highlighters.on("grid-highlighter-shown", this.onHighlighterChange);
this.inspector.selection.on("new-node-front", this.onNewSelection);
this.inspector.sidebar.on("select", this.onSidebarSelect);
// Create a shared SwatchColorPicker instance to be reused by all GridItem components.
this.swatchColorPickerTooltip = new SwatchColorPickerTooltip(
this.inspector.toolbox.doc,
this.inspector,
{
supportsCssColor4ColorFunction: () => false
}
);
let app = App({
/**
* Retrieve the shared SwatchColorPicker instance.
*/
getSwatchColorPickerTooltip: () => {
return this.swatchColorPickerTooltip;
},
/**
* Shows the box model properties under the box model if true, otherwise, hidden by
* default.
*/
showBoxModelProperties: true,
/**
* Hides the box-model highlighter on the currently selected element.
*/
onHideBoxModelHighlighter: () => {
let toolbox = this.inspector.toolbox;
toolbox.highlighterUtils.unhighlight();
},
/**
* Handler for a change in the grid overlay color picker for a grid container.
*
* @param {NodeFront} node
* The NodeFront of the grid container element for which the grid color is
* being updated.
* @param {String} color
* A hex string representing the color to use.
*/
onSetGridOverlayColor: (node, color) => {
this.store.dispatch(updateGridColor(node, color));
let { grids } = this.store.getState();
// If the grid for which the color was updated currently has a highlighter, update
// the color.
for (let grid of grids) {
if (grid.nodeFront === node && grid.highlighted) {
let highlighterSettings = this.getGridHighlighterSettings(node);
this.highlighters.showGridHighlighter(node, highlighterSettings);
}
}
},
/**
* Shows the inplace editor when a box model editable value is clicked on the
* box model panel.
*
* @param {DOMNode} element
* The element that was clicked.
* @param {Event} event
* The event object.
* @param {String} property
* The name of the property.
*/
onShowBoxModelEditor: (element, event, property) => {
let session = new EditingSession({
inspector: this.inspector,
doc: this.document,
elementRules: this.elementRules,
});
let initialValue = session.getProperty(property);
let editor = new InplaceEditor({
element: element,
initial: initialValue,
contentType: InplaceEditor.CONTENT_TYPES.CSS_VALUE,
property: {
name: property
},
start: self => {
self.elt.parentNode.classList.add("boxmodel-editing");
},
change: value => {
if (NUMERIC.test(value)) {
value += "px";
}
let properties = [
{ name: property, value: value }
];
if (property.substring(0, 7) == "border-") {
let bprop = property.substring(0, property.length - 5) + "style";
let style = session.getProperty(bprop);
if (!style || style == "none" || style == "hidden") {
properties.push({ name: bprop, value: "solid" });
}
}
session.setProperties(properties).catch(e => console.error(e));
},
done: (value, commit) => {
editor.elt.parentNode.classList.remove("boxmodel-editing");
if (!commit) {
session.revert().then(() => {
session.destroy();
}, e => console.error(e));
return;
}
let node = this.inspector.selection.nodeFront;
this.inspector.pageStyle.getLayout(node, {
autoMargins: true,
}).then(layout => {
this.store.dispatch(updateLayout(layout));
}, e => console.error(e));
},
contextMenu: this.inspector.onTextBoxContextMenu,
cssProperties: getCssProperties(this.inspector.toolbox)
}, event);
},
/**
* Shows the box-model highlighter on the currently selected element.
*
* @param {Object} options
* Options passed to the highlighter actor.
*/
onShowBoxModelHighlighter: (options = {}) => {
let toolbox = this.inspector.toolbox;
let nodeFront = this.inspector.selection.nodeFront;
toolbox.highlighterUtils.highlightNodeFront(nodeFront, options);
},
/**
* Handler for a change in the input checkboxes in the GridList component.
* Toggles on/off the grid highlighter for the provided grid container element.
*
* @param {NodeFront} node
* The NodeFront of the grid container element for which the grid
* highlighter is toggled on/off for.
*/
onToggleGridHighlighter: node => {
let highlighterSettings = this.getGridHighlighterSettings(node);
this.highlighters.toggleGridHighlighter(node, highlighterSettings);
},
/**
* Handler for a change in the show grid line numbers checkbox in the
* GridDisplaySettings component. Toggles on/off the option to show the grid line
* numbers in the grid highlighter. Refreshes the shown grid highlighter for the
* grids currently highlighted.
*
* @param {Boolean} enabled
* Whether or not the grid highlighter should show the grid line numbers.
*/
onToggleShowGridLineNumbers: enabled => {
this.store.dispatch(updateShowGridLineNumbers(enabled));
Services.prefs.setBoolPref(SHOW_GRID_LINE_NUMBERS, enabled);
let { grids } = this.store.getState();
for (let grid of grids) {
if (grid.highlighted) {
let highlighterSettings = this.getGridHighlighterSettings(grid.nodeFront);
this.highlighters.showGridHighlighter(grid.nodeFront, highlighterSettings);
}
}
},
/**
* Handler for a change in the extend grid lines infinitely checkbox in the
* GridDisplaySettings component. Toggles on/off the option to extend the grid
* lines infinitely in the grid highlighter. Refreshes the shown grid highlighter
* for grids currently highlighted.
*
* @param {Boolean} enabled
* Whether or not the grid highlighter should extend grid lines infinitely.
*/
onToggleShowInfiniteLines: enabled => {
this.store.dispatch(updateShowInfiniteLines(enabled));
Services.prefs.setBoolPref(SHOW_INFINITE_LINES_PREF, enabled);
let { grids } = this.store.getState();
for (let grid of grids) {
if (grid.highlighted) {
let highlighterSettings = this.getGridHighlighterSettings(grid.nodeFront);
this.highlighters.showGridHighlighter(grid.nodeFront, highlighterSettings);
}
}
}
});
let provider = createElement(Provider, {
store: this.store,
id: "layoutview",
title: INSPECTOR_L10N.getStr("inspector.sidebar.layoutViewTitle2"),
key: "layoutview",
}, app);
let defaultTab = Services.prefs.getCharPref("devtools.inspector.activeSidebar");
this.inspector.addSidebarTab(
"layoutview",
INSPECTOR_L10N.getStr("inspector.sidebar.layoutViewTitle2"),
provider,
defaultTab == "layoutview"
);
}),
/**
* Destruction function called when the inspector is destroyed. Removes event listeners
* and cleans up references.
*/
destroy() {
this.highlighters.off("grid-highlighter-hidden", this.onHighlighterChange);
this.highlighters.off("grid-highlighter-shown", this.onHighlighterChange);
this.inspector.selection.off("new-node-front", this.onNewSelection);
this.inspector.sidebar.off("select", this.onSidebarSelect);
this.layoutInspector.off("grid-layout-changed", this.onGridLayoutChange);
if (this.reflowFront) {
this.untrackReflows();
this.reflowFront.destroy();
this.reflowFront = null;
}
this.document = null;
this.inspector = null;
this.layoutInspector = null;
this.store = null;
this.walker = null;
},
/**
* Returns the color set for the grid highlighter associated with the provided
* nodeFront.
*
* @param {NodeFront} nodeFront
* The NodeFront for which we need the color.
*/
getGridColorForNodeFront(nodeFront) {
let { grids } = this.store.getState();
for (let grid of grids) {
if (grid.nodeFront === nodeFront) {
return grid.color;
}
}
return null;
},
/**
* Create a highlighter settings object for the provided nodeFront.
*
* @param {NodeFront} nodeFront
* The NodeFront for which we need highlighter settings.
*/
getGridHighlighterSettings(nodeFront) {
let { highlighterSettings } = this.store.getState();
// Get the grid color for the provided nodeFront.
let color = this.getGridColorForNodeFront(nodeFront);
// Merge the grid color to the generic highlighter settings.
return Object.assign({}, highlighterSettings, {
color
});
},
/**
* Returns true if the layout panel is visible, and false otherwise.
*/
isPanelVisible() {
return this.inspector.toolbox.currentToolId === "inspector" &&
this.inspector.sidebar &&
this.inspector.sidebar.getCurrentTabID() === "layoutview";
},
/**
* Returns true if the layout panel is visible and the current node is valid to
* be displayed in the view.
*/
isPanelVisibleAndNodeValid() {
return this.isPanelVisible() &&
this.inspector.selection.isConnected() &&
this.inspector.selection.isElementNode();
},
/**
* Load the grid highligher display settings into the store from the stored preferences.
*/
loadHighlighterSettings() {
let { dispatch } = this.store;
let showGridLineNumbers = Services.prefs.getBoolPref(SHOW_GRID_LINE_NUMBERS);
let showInfinteLines = Services.prefs.getBoolPref(SHOW_INFINITE_LINES_PREF);
dispatch(updateShowGridLineNumbers(showGridLineNumbers));
dispatch(updateShowInfiniteLines(showInfinteLines));
},
/**
* Starts listening to reflows in the current tab.
*/
trackReflows() {
if (!this.reflowFront) {
let { target } = this.inspector;
if (target.form.reflowActor) {
this.reflowFront = ReflowFront(target.client,
target.form);
} else {
return;
}
}
this.reflowFront.on("reflows", this.updateBoxModel);
this.reflowFront.start();
},
/**
* Stops listening to reflows in the current tab.
*/
untrackReflows() {
if (!this.reflowFront) {
return;
}
this.reflowFront.off("reflows", this.updateBoxModel);
this.reflowFront.stop();
},
/**
* Updates the box model panel by dispatching the new layout data.
*/
updateBoxModel() {
let lastRequest = Task.spawn((function* () {
if (!(this.isPanelVisible() &&
this.inspector.selection.isConnected() &&
this.inspector.selection.isElementNode())) {
return null;
}
let node = this.inspector.selection.nodeFront;
let layout = yield this.inspector.pageStyle.getLayout(node, {
autoMargins: true,
});
let styleEntries = yield this.inspector.pageStyle.getApplied(node, {});
this.elementRules = styleEntries.map(e => e.rule);
// Update the redux store with the latest layout properties and update the box
// model view.
this.store.dispatch(updateLayout(layout));
// If a subsequent request has been made, wait for that one instead.
if (this._lastRequest != lastRequest) {
return this._lastRequest;
}
this._lastRequest = null;
this.inspector.emit("boxmodel-view-updated");
return null;
}).bind(this)).catch(console.error);
this._lastRequest = lastRequest;
},
/**
* Updates the grid panel by dispatching the new grid data. This is called when the
* layout view becomes visible or the view needs to be updated with new grid data.
*
* @param {Array|null} gridFronts
* Optional array of all GridFront in the current page.
*/
updateGridPanel: Task.async(function* (gridFronts) {
// Stop refreshing if the inspector or store is already destroyed.
if (!this.inspector || !this.store) {
return;
}
// Get all the GridFront from the server if no gridFronts were provided.
if (!gridFronts) {
gridFronts = yield this.layoutInspector.getAllGrids(this.walker.rootNode);
}
let grids = [];
for (let i = 0; i < gridFronts.length; i++) {
let grid = gridFronts[i];
let nodeFront = yield this.walker.getNodeFromActor(grid.actorID, ["containerEl"]);
let fallbackColor = GRID_COLORS[i % GRID_COLORS.length];
let color = this.getGridColorForNodeFront(nodeFront) || fallbackColor;
grids.push({
id: i,
color,
gridFragments: grid.gridFragments,
highlighted: nodeFront == this.highlighters.gridHighlighterShown,
nodeFront,
});
}
this.store.dispatch(updateGrids(grids));
}),
/**
* Handler for "grid-layout-changed" events emitted from the LayoutActor.
*
* @param {Array} grids
* Array of all GridFront in the current page.
*/
onGridLayoutChange(grids) {
if (this.isPanelVisible()) {
this.updateGridPanel(grids);
}
},
/**
* Handler for "grid-highlighter-shown" and "grid-highlighter-hidden" events emitted
* from the HighlightersOverlay. Updates the NodeFront's grid highlighted state.
*
* @param {Event} event
* Event that was triggered.
* @param {NodeFront} nodeFront
* The NodeFront of the grid container element for which the grid highlighter
* is shown for.
*/
onHighlighterChange(event, nodeFront) {
let highlighted = event === "grid-highlighter-shown";
this.store.dispatch(updateGridHighlighted(nodeFront, highlighted));
},
/**
* Selection 'new-node-front' event handler.
*/
onNewSelection: function () {
if (!this.isPanelVisibleAndNodeValid()) {
return;
}
this.updateBoxModel();
},
/**
* Handler for the inspector sidebar select event. Starts listening for
* "grid-layout-changed" if the layout panel is visible. Otherwise, stop
* listening for grid layout changes. Finally, refresh the layout view if
* it is visible.
*/
onSidebarSelect() {
if (!this.isPanelVisible()) {
this.layoutInspector.off("grid-layout-changed", this.onGridLayoutChange);
this.untrackReflows();
return;
}
if (this.inspector.selection.isConnected() &&
this.inspector.selection.isElementNode()) {
this.trackReflows();
}
this.layoutInspector.on("grid-layout-changed", this.onGridLayoutChange);
this.updateBoxModel();
this.updateGridPanel();
},
};
module.exports = LayoutView;