GWT: KeyDownHandler listening to key typed

If you want to know when user typed something into the TextBox, or TextArea use KeyDownHandler.
This comes useful when you want to update the SAVE status, or COUNT characters for Twitter (140) or SMS (160).



final TextBox textBox = new TextBox();
textBox.setStyleName("recipe_edit_width");
textBox.setText(currentRecipe.getName());
recipeName.add(textBox);

textBox.addKeyDownHandler(new KeyDownHandler()
{
    public void onKeyDown(KeyDownEvent event)
    {
isSaved = false;
currentRecipe.setName(textBox.getText());
updateSaveStatus();
    }
});

























As an Amazon Associate I earn from qualifying purchases.

No comments:

Post a Comment

Please be polite.

Post Scriptum

The views in this article are mine and do not reflect those of my employer.
I am preparing to cancel the subscription to the e-mail newsletter that sends my articles.
Follow me on:
X.com (Twitter)
LinkedIn
Google Scholar

My favorite quotations..


“A man should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.”  by Robert A. Heinlein

"We are but habits and memories we chose to carry along." ~ Uki D. Lucas


Popular Recent Posts

Most Popular Articles