本文整理汇总了TypeScript中@phosphor/commands.CommandRegistry.isEnabled方法的典型用法代码示例。如果您正苦于以下问题：TypeScript CommandRegistry.isEnabled方法的具体用法？TypeScript CommandRegistry.isEnabled怎么用？TypeScript CommandRegistry.isEnabled使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类@phosphor/commands.CommandRegistry的用法示例。
在下文中一共展示了CommandRegistry.isEnabled方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: it
it('should test whether a specific command is enabled', () => {
let cmd = {
execute: (args: JSONObject) => { return args; },
isEnabled: (args: JSONObject) => { return args.enabled as boolean; }
};
registry.addCommand('test', cmd);
expect(registry.isEnabled('test', { enabled: true })).to.equal(true);
expect(registry.isEnabled('test', { enabled: false })).to.equal(false);
});示例2: onChange
// Ensure that we pick up relevant changes to the command:
function onChange(sender: CommandRegistry, args: CommandRegistry.ICommandChangedArgs) {
if (args.id !== id) {
return; // Not our command
}
if (args.type === 'removed') {
// Dispose of button
button.dispose();
return;
}
if (args.type !== 'changed') {
return;
}
// Update all fields (onClick is already indirected)
const newClasses = Private.commandClassName(sender, id).split(/\s/);
for (let cls of oldClasses) {
if (cls && newClasses.indexOf(cls) === -1) {
button.removeClass(cls);
}
}
for (let cls of newClasses) {
if (cls && oldClasses.indexOf(cls) === -1) {
button.addClass(cls);
}
}
oldClasses = newClasses;
button.node.title = Private.commandTooltip(sender, id);
Private.setNodeContentFromCommand(button.node, sender, id);
(button.node as HTMLButtonElement).disabled = !sender.isEnabled(id);
}示例3: createFromCommand
function createFromCommand(commands: CommandRegistry, id: string): ToolbarButton | null {
if (!commands.hasCommand(id)) {
return null;
}
const button = new ToolbarButton({
onClick: () => {
commands.execute(id);
button.node.blur();
},
className: Private.commandClassName(commands, id),
tooltip: Private.commandTooltip(commands, id)
});
let oldClasses = Private.commandClassName(commands, id).split(/\s/);
(button.node as HTMLButtonElement).disabled = !commands.isEnabled(id);
Private.setNodeContentFromCommand(button.node, commands, id);
// Ensure that we pick up relevant changes to the command:
function onChange(sender: CommandRegistry, args: CommandRegistry.ICommandChangedArgs) {
if (args.id !== id) {
return; // Not our command
}
if (args.type === 'removed') {
// Dispose of button
button.dispose();
return;
}
if (args.type !== 'changed') {
return;
}
// Update all fields (onClick is already indirected)
const newClasses = Private.commandClassName(sender, id).split(/\s/);
for (let cls of oldClasses) {
if (cls && newClasses.indexOf(cls) === -1) {
button.removeClass(cls);
}
}
for (let cls of newClasses) {
if (cls && oldClasses.indexOf(cls) === -1) {
button.addClass(cls);
}
}
oldClasses = newClasses;
button.node.title = Private.commandTooltip(sender, id);
Private.setNodeContentFromCommand(button.node, sender, id);
(button.node as HTMLButtonElement).disabled = !sender.isEnabled(id);
}
commands.commandChanged.connect(onChange, button);
return button;
}