diff options
Diffstat (limited to 'app/src/main/kotlin/com/pitchedapps/frost/web/SearchWebView.kt')
| -rw-r--r-- | app/src/main/kotlin/com/pitchedapps/frost/web/SearchWebView.kt | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/web/SearchWebView.kt b/app/src/main/kotlin/com/pitchedapps/frost/web/SearchWebView.kt deleted file mode 100644 index d45c2cf6..00000000 --- a/app/src/main/kotlin/com/pitchedapps/frost/web/SearchWebView.kt +++ /dev/null @@ -1,155 +0,0 @@ -package com.pitchedapps.frost.web - -import android.annotation.SuppressLint -import android.content.Context -import android.webkit.JavascriptInterface -import android.webkit.WebView -import ca.allanwang.kau.searchview.SearchItem -import ca.allanwang.kau.utils.gone -import com.pitchedapps.frost.facebook.FbItem -import com.pitchedapps.frost.facebook.USER_AGENT_BASIC -import com.pitchedapps.frost.injectors.JsAssets -import com.pitchedapps.frost.injectors.JsBuilder -import com.pitchedapps.frost.utils.L -import io.reactivex.rxkotlin.subscribeBy -import io.reactivex.schedulers.Schedulers -import io.reactivex.subjects.PublishSubject -import org.jetbrains.anko.runOnUiThread -import org.jsoup.Jsoup -import java.util.concurrent.TimeUnit - -@SuppressLint("ViewConstructor") -/** - * Created by Allan Wang on 2017-06-25. - * - * A bare bone headless search view meant solely to extract search results from the web - * Having a single webview allows us to avoid loading the whole page with each query - */ -class SearchWebView(context: Context, val contract: SearchContract) : WebView(context) { - - val searchSubject = PublishSubject.create<String>()!! - - init { - gone() - setupWebview() - } - - /** - * Basic info of last search results, so we can check if the list has actually changed - * Contains the last item's href (search more) as well as the number of items found - * This holder is synchronized - */ - private var previousResult: Pair<String, Int> = Pair("", 0) - - private fun saveResultFrame(result: List<Pair<List<String>, String>>) { - synchronized(previousResult) { - previousResult = Pair(result.last().second, result.size) - } - } - - @SuppressLint("SetJavaScriptEnabled") - private fun setupWebview() { - L.i("Begin SearchWebView setup") - settings.javaScriptEnabled = true - settings.userAgentString = USER_AGENT_BASIC - webViewClient = HeadlessWebViewClient("Search", JsAssets.SEARCH) - webChromeClient = HeadlessChromeClient() - addJavascriptInterface(SearchJSI(), "Frost") - searchSubject.debounce(300, TimeUnit.MILLISECONDS).subscribeOn(Schedulers.newThread()) - .map { - val doc = Jsoup.parse(it) - L.d(doc.getElementById("main-search_input")?.html()) - val searchQuery = doc.getElementById("main-search-input")?.text() ?: "Null input" - L.d("Search query", searchQuery) - doc.select("a:not([rel*='keywords(']):not([href=#])[rel]").map { element -> - //split text into separate items - L.v("Search element", element.attr("href")) - val texts = element.select("div").map { it.text() }.filter { !it.isNullOrBlank() } - val pair = Pair(texts, element.attr("href")) - L.v("Search element potential", pair.toString()) - pair - }.filter { it.first.isNotEmpty() } - } - .filter { it.isNotEmpty() } - .filter { Pair(it.last().second, it.size) != previousResult } - .subscribeBy( - onNext = { content: List<Pair<List<String>, String>> -> - saveResultFrame(content) - L.d("Search element count ${content.size}") - contract.emitSearchResponse(content.map { (texts, href) -> - SearchItem(href, texts[0], texts.getOrNull(1)) - }) - }, - onError = { throwable -> - L.e(throwable, "SearchSubject error") - } - ) - reload() - } - - /** - * Toggles web activity - * Should be done in conjunction with showing/hiding the search view - */ - var pauseLoad: Boolean - get() = settings.blockNetworkLoads - set(value) { - context.runOnUiThread { settings.blockNetworkLoads = value } - } - - override fun reload() { - super.loadUrl(FbItem.SEARCH.url) - } - - /** - * Sets the input to have our given text, then dispatches the input event so the webpage recognizes it - */ - fun query(input: String) { - pauseLoad = false - L.d("Searching attempt", input) - JsBuilder().js("var e=document.getElementById('main-search-input');if(e){e.value='$input';var n=new Event('input',{bubbles:!0,cancelable:!0});e.dispatchEvent(n),e.dispatchEvent(new Event('focus'))}else console.log('Input field not found');").build().inject(this) - } - - inner class SearchJSI { - @JavascriptInterface - fun handleHtml(html: String?) { - html ?: return - L.d("Search received response ${contract.isSearchOpened}") - if (!contract.isSearchOpened) pauseLoad = true - searchSubject.onNext(html) - } - - @JavascriptInterface - fun emit(flag: Int) { - when (flag) { - 0 -> { - L.i("Search loaded successfully") - } - 1 -> { //something is not found in the search view; this is effectively useless - L.e("Search subject error") - dispose() - contract.disposeHeadlessSearch() - } - 2 -> { - L.v("Search emission received") - } - } - } - } - - /** - * Clear up some components - */ - fun dispose() { - searchSubject.onComplete() - } - - interface SearchContract { - fun disposeHeadlessSearch() - fun emitSearchResponse(items: List<SearchItem>) - val isSearchOpened: Boolean - } -} - - - |