+Mustaq Ahmed <[email protected]> On Mon, Nov 24, 2025, 14:19 Alex <[email protected]> wrote:
> Hi everyone, > I’m new to Chromium and currently studying specific components for a > university web-security seminar. Because the codebase is quite large, I’m > hoping someone can point me to the relevant areas. > > Specifically, I’m trying to understand *where Chromium decides whether an > action counts as a “user activation”* in the context of *Android intent > URI handling* (e.g., clicking a link like: > intent://scan/#Intent;scheme=exampleapp;package=com.example.app;end; > which then opens an app) > > Chrome on Android will allow this navigation if it was triggered by a > genuine user gesture (e.g., a tap), but if it is triggered by script > without prior user interaction, Chrome either blocks it or shows a > confirmation dialog. > > My goal is to analyze *which input events qualify as transient user > activation* and how this feeds into the intent-launching logic. > > So far, from online documentation, I found that events such as click, > keydown/keyup, touchstart/touchend contribute to user activation, while > others do not. However, I would like to confirm this by locating the actual > decision logic in the source code. > > Could someone point me to the part of the Chromium codebase where: > > 1. > > User gestures / user activation are detected and recorded, and > 2. > > The navigation / intent-launching code checks are done? > > Any pointers to the right directories or files would be greatly > appreciated. > > I hope the question isn't too confusing. > Thanks in advance! > > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2842dde4-5ad7-4ffa-b348-ca538589981fn%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2842dde4-5ad7-4ffa-b348-ca538589981fn%40chromium.org?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohS%2BBbpga6v3EXPaYOwdqXELCYkd_TkV7iU-oS1_c%2BqFGzQ%40mail.gmail.com.
